25-30 June 2017
“Politehnica” University of Bucharest
Europe/Bucharest timezone
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Contribution List

Displaying 312 contributions out of 312
Type: Poster Session: Posters: Recent advances in lidar technology
Track: Recent advances in lidar technology Board #: 011
Global wind profiling is very important to improve the initial conditions for numerical weather prediction and meteorological studies. Vertical resolutions of space-borne microwave sensors and atmospheric motion vector are low (2-4 km). A Doppler wind lidar would be a promising approach for global wind profiling with high vertical resolution (< 1 km). We conduct studies for a future space-borne Do ... More
Presented by Dr. Shoken ISHII on 26 Jun 2017 at 17:30
Type: Poster Session: Posters: Spaceborne-Airborne lidar missions
Track: Spaceborne-Airborne lidar missions Board #: 021
A compact LED lidar was constructed and field-tested with the aim to observe the Mars’ dust devils. To be able to fit it on the Mars rover, the specialized Cassegrain telescope was designed to be within a 10 cm-cube, with a field of view of 3mrad. The transmitter has 385 nm LED light source with 3 cmϕ opening, 70mrad divergence, 0.75W (7.5nJ/10ns) pulse power, and 500 kHz repetition frequency. ... More
Presented by Prane Mariel ONG on 26 Jun 2017 at 17:30
Type: Poster Session: Posters: Synergy of lidars and other sensors
Track: Synergy of lidars and other sensors Board #: 081
With only 50% down-time from 2007-2016, the RALMO lidar in Payerne, Switzerland, has one of the largest continuous lidar data sets available. These measurements will be used to produce an extensive lidar water vapour climatology using the Optimal Estimation Method introduced by Sica and Haefele (2016). We will compare our improved technique for external calibration using radiosonde trajectories wi ... More
Presented by Shannon HICKS on 27 Jun 2017 at 17:30
Type: Poster Session: Posters: Lidars applications in atmospheric structure and composition: aerosols, clouds, trace gases
Track: Lidars applications in atmospheric structure and composition: aerosols, clouds, trace gases Board #: 051
A Rayleigh-Mie-Raman LIDAR provides vertical profiles of tropospheric variables at Clermont-Ferrand (France) since 2008, in order to describe the boundary layer dynamics, tropospheric aerosols, cirrus and water vapor. It is included in the EARLINET network. We performed hardware/software developments in order to upgrade the quality, calibration and improve automation. We present an overview of th ... More
Presented by Dr. Jean-Luc BARAY on 29 Jun 2017 at 17:30
Type: Oral Session: Synergy of lidars and other sensors
Track: Synergy of lidars and other sensors
The mobile system described in this paper integrates a commercial eye-safe LiDAR (Cimel), a sunphotometer and an optical particle counter. The system is distinguished by other transportable platforms through its capabilities to perform on-road measurements. The potential of a commercial LiDAR to provide reliable information on aerosol properties is investigated through comparison with a multi-wave ... More
Presented by Ms. Ioana POPOVICI on 30 Jun 2017 at 12:15
Type: Poster Session: Posters: Recent advances in lidar technology
Track: Recent advances in lidar technology Board #: 011
The purpose of the QOMA II project (funded by the European Space Agency-ESA) is to implement a Diode Pumped Solid State-DPSS laser with pulses of energy >10 mJ and duration <15 ns (100 Hz repetition frequency and M2<1.2). To this end, pumping of multisegmented Nd:YAG rods directly to the upper laser state (885 nm) will be used, together with conductively crystal cooling in passively Q-switched mod ... More
Presented by Dr. GEORGE TSAKNAKIS on 26 Jun 2017 at 17:30
Type: Oral Session: Recent advances in lidar technology
Track: Recent advances in lidar technology
A recently conducted NASA Earth Science Technology Office (ESTO) review of current science challenges related to NASA’s Earth science measurement goals highlighted the technology needs that would make future Earth observations possible. New investments in lidar technology and a review of state-of-the-art transmitter, receiver, and information technologies as they pertain to lidar systems will en ... More
Presented by Dr. George KOMAR on 26 Jun 2017 at 14:00
Type: Poster Session: Posters: Lidars applications in atmospheric structure and composition: aerosols, clouds, trace gases
Track: Lidars applications in atmospheric structure and composition: aerosols, clouds, trace gases Board #: 051
A new method to detect sea fogs using CALIOP level 2 Vertical Feature Mask (VFM) is proposed. The VFM surface points above the nominal ocean surface elevation of zero are defined as misjudged sea surface points. The characters of these points are analyzed and compared with that of clouds and aerosols, and the corresponding extinction coefficient and visibility are retrieved for the verification. T ... More
Presented by Prof. Dong WU on 29 Jun 2017 at 17:30
Type: Poster Session: Posters: Lidars applications in atmospheric structure and composition: aerosols, clouds, trace gases
Track: Lidars applications in atmospheric structure and composition: aerosols, clouds, trace gases Board #: 051
Most lidar processing algorithms, such as those included in EARLINET’s Single Calculus Chain, can be applied only to cloud-free atmospheric scenes. In this paper we present a methodology for masking clouds in uncalibrated lidar signals. First, we construct a reference dataset based on manual inspection and then train a classifier to separate clouds and cloud-free regions. Here we present details ... More
Presented by Dr. Ioannis BINIETOGLOU on 29 Jun 2017 at 17:30
Type: Poster Session: Posters: Recent advances in lidar technology
Track: Recent advances in lidar technology Board #: 011
A Doppler-LIDAR is presented using pseudo random phase modulation. It avoids the trade-off between range- and Doppler-resolution of conventional pulse LIDARs but maintains the main benefits. While spread spectrum techniques are well known for microwave radar, large Doppler shifts at optical wavelengths required a specific approach. Our technique also works with continuous waves. One advantage ove ... More
Presented by Prof. Ernst BRINKMEYER, Dr. Christoph BOLLIG on 26 Jun 2017 at 17:30
Type: Oral Session: Lidar applications in atmospheric structure and composition: aerosols, clouds, trace gases
Track: Lidars applications in atmospheric structure and composition: aerosols, clouds, trace gases
RALMO is operated at MeteoSwiss and provides continuous measurements of water vapor since 2007. Water vapor needs calibration to be used for climatological and meteorological studies. Primarily, RALMO is calibrated against a reference radiosonde. A secondary new calibration system based on an internal LED has been installed to perform automatic relative calibrations correcting for instrumental dri ... More
Presented by Dr. giovanni MARTUCCI on 28 Jun 2017 at 11:15
Type: Oral Session: Lidar networks
Track: Lidar networks
ACTRIS, the Aerosols, Clouds and Trace gases Research Infrastructure (www.actris.eu) is a distributed infrastructure dedicated to high-quality observation of aerosols, clouds, trace gases and exploration of their interactions. ACTRIS serves a vast community of users working on observations, experiments, models, satellite data, analysis and predicting systems and offers access to advanced technolo ... More
Presented by Dr. Gelsomina PAPPALARDO on 30 Jun 2017 at 14:00
Type: Poster Session: Posters: Spaceborne-Airborne lidar missions
Track: Spaceborne-Airborne lidar missions Board #: 021
The first wind lidar in space ALADIN will be deployed on ESA´s Aeolus mission. In order to assess the performance of ALADIN and to optimize the wind retrieval and calibration algorithms an end-to-end simulator was developed. This allows realistic simulations of Aeolus downlinked data. Together with operational processors this setup is used to assess random and systematic error sources and perform ... More
Presented by Dr. Oliver REITEBUCH on 26 Jun 2017 at 17:30
Type: Poster Session: Posters: Lidars applications in atmospheric structure and composition: aerosols, clouds, trace gases
Track: Lidars applications in atmospheric structure and composition: aerosols, clouds, trace gases Board #: 051
The EOLE multi-wavelength aerosol Raman-depolarization lidar, the AIAS depolarization lidar and a sun photometer, were used, in the period 2007-2016, to provide the aerosol optical properties over Athens, Greece, during more than 30 biomass burning events. Lidar ratio values ranged from 40-105 sr (355 nm) and from 40-100 sr (532 nm), while linear particle depolarization value (532 nm) was < 7 %. T ... More
Presented by Mrs. Maria MYLONAKI, Prof. Alexandros PAPAYANNIS on 29 Jun 2017 at 17:30
Type: Poster Session: Posters: Spaceborne-Airborne lidar missions
Track: Spaceborne-Airborne lidar missions Board #: 021
The launch of the Aeolus mission by the European Space Agency is planned for end 2017. The satellite will carry the 1st wind lidar in space, ALADIN. Its prototype instrument, the ALADIN Airborne Demonstrator (A2D), was deployed during several airborne campaigns aiming at the validation of the measurement principle and optimization of algorithms. In 2015, flights of 2 aircraft from DLR & NASA provi ... More
Presented by Dr. Uwe MARKSTEINER on 26 Jun 2017 at 17:30
Type: Poster Session: Posters: Lidars applications in atmospheric structure and composition: aerosols, clouds, trace gases
Track: Lidars applications in atmospheric structure and composition: aerosols, clouds, trace gases Board #: 051
An intense biomass-burning event from North America in July 2015 was observed over Ny-Ålesund, Spitsbergen. An extreme air pollution took place and aerosol optical depth of more than 1 at 500 nm occurs in middle and lower troposphere. We analyse data from the multi-wavelengths Raman-lidar KARL of Alfred Wegener Institute to derive some microphysical properties of the aerosol of one interesting la ... More
Presented by Prof. Christine BOECKMANN on 29 Jun 2017 at 17:30
Type: Poster Session: Posters: Lidar networks
Track: Lidar networks Board #: 091
The results of the ATHLI16 (ATHens Lidar Intercomparison) campaign, held in Athens from 26/09 to 07/10 2016 are presented. The campaign was performed within the Lidar Calibration Centre activities (EU H2020 ACTRIS-2 project) to assess the performances of the EOLE lidar system (NTUA, Athens), operating within EARLINET, through the comparison with the EARLINET reference lidar system MUSA (CNR-IMAA, ... More
Presented by Mr. Aldo AMODEO, Prof. Alexandros PAPAYANNIS on 27 Jun 2017 at 17:30
Type: Oral Session: Synergy of lidars and other sensors
Track: Synergy of lidars and other sensors
In this study, we focus on the retrieval of liquid and ice-phase cloud microphysics from space-borne and ground-based lidar-cloud radar synergy. As an application of the cloud retrieval algorithm developed for the EarthCARE satellite mission (JAXA-ESA), the derived statistics of cloud microphysical properties in high latitudes and their relation to the Arctic climate are investigated.
Presented by Dr. Kaori SATO on 30 Jun 2017 at 09:45
Type: Poster Session: Posters: Recent advances in lidar technology
Track: Recent advances in lidar technology Board #: 011
This paper reports the atmospheric temperature profile measurements using University of Wisconsin-Madison High Spectral Resolution Lidar (HSRL) and describes the advances in the instrument performance and the atmospheric temperature measurement technique. The new measurement results and its analysis are reported. The hardware modifications improving mechanical stability and calibration accuracy of ... More
Presented by Mr. Ilya RAZENKOV, Dr. Edwin ELORANTA on 26 Jun 2017 at 17:30
Type: Oral Session: Spaceborne-Airborne lidar missions
Track: Spaceborne-Airborne lidar missions
The effect of human activities on climate is a grand challenge facing society today. Humans influence climate in many ways. Emissions of greenhouse gases (GHGs) tend to warm climate, by reducing the amount of infrared radiation that is emitted to space. Increased levels of suspended atmospheric particles (“aerosols”) exert a net cooling effect by directly scattering and absorbing of incoming s ... More
Presented by Prof. Athanasios NENES on 26 Jun 2017 at 09:00
Type: Oral Session: Lidar networks
Track: Lidar networks
Data assimilation is a technique to fuse numerical model and observations (1) to obtain the more accurate state for forecasts (initial value problem), (2) to optimize parameters (e.g., emissions) (inversion), (3) to generate a uniform, continuous, and best-estimated data product (reanalysis), and (4) to investigate the potential impact of observing system. In this presentation, we will introduce s ... More
Presented by Dr. Keiya YUMIMOTO on 30 Jun 2017 at 16:00
Type: Oral Session: Large scale campaigns
Track: Large-scale campaigns
Dust and dust-smoke mixture events observed during SHADOW2 field campaign are selected and analyzed by using Raman and GARRLiC retrievals. The derived aerosol optical and microphysical properties will be shown. Dust absorption profile and at ground level are derived from GARRLiC retrievals and in-situ aethalometer measurements, respectively. Our results provide a closer insight about du ... More
Presented by Ms. Qiaoyun HU on 29 Jun 2017 at 15:00
Type: Oral Session: Synergy of lidars and other sensors
Track: Synergy of lidars and other sensors
Aerosol absorption profiling is crucial for radiative transfer calculations and climate modelling. Here, we utilize the synergy of lidar with sun-photometer measurements to derive the absorption coefficient and single scattering albe-do profiles during the ACTRIS-2 campaigns held in Germany, Greece and Cy-prus. The remote sensing techniques are compared with in-situ measurements in order to harmon ... More
Presented by Ms. Alexandra TSEKERI on 30 Jun 2017 at 11:45
Type: Poster Session: Posters: Synergy of lidars and other sensors
Track: Synergy of lidars and other sensors Board #: 081
One year records of AErosolROboticNEtwork (AERONET) sun photometer measurements were analyzed to investigate the seasonal and daily variations of columnar aerosol optical depth. Some irregularities of this time series are associated with aerosol intrusions. The aerosol layers indicated by these irregularities are identified and characterized using the extensive optical data from coincident CALIPSO ... More
Presented by Mr. Alexandru DANDOCSI on 27 Jun 2017 at 17:30
Type: Oral Session: Recent advances in lidar technology
Track: Recent advances in lidar technology
Aerosol extinction coefficients are measured with a simple high spectral resolution lidar technique using a multi-longitudinal mode laser. An interferometer with the same free spectral range as the laser mode spacing is used. Scanning the interferometer in the span of one fringe, lidar signals at the minimum and maximum Mie-scattering transmission are determined. The ldiar signals are calibrated w ... More
Presented by Dr. Yoshitaka JIN on 26 Jun 2017 at 17:00
Type: Poster Session: Posters: Lidar networks
Track: Lidar networks Board #: 091
We started continuous measurements of aerosols with multi-wavelength Mie-Raman lidars (2α+3β+2δ) at three sites of the AD-Net. To analyze the AD-Net lidar data, we developed an integrated package of aerosol component retrieval algorithms to estimate vertical profiles of main aerosol components in the atmosphere (e.g., dust, sea-salt, and black carbon). This package will be applicable to satelli ... More
Presented by Dr. Tomoaki NISHIZAWA on 27 Jun 2017 at 17:30
Type: Poster Session: Posters: Lidars applications in atmospheric structure and composition: aerosols, clouds, trace gases
Track: Lidars applications in atmospheric structure and composition: aerosols, clouds, trace gases Board #: 051
A Raman Lidar system was operated at the CSIR-NPL’s remote monitoring site at CSIR-IHBT campus, Palampur, India at 1347 m (amsl). To obtain better signal for near and far range, both analog and photon counts signals were glued after performing background and dead-time correction. Glued lidar signal after spatial and temporal averaging is used to derive aerosol/cloud optical properties including ... More
Presented by Mr. Jaswant JASWANT on 29 Jun 2017 at 17:30
Type: Poster Session: Posters: Spaceborne-Airborne lidar missions
Track: Spaceborne-Airborne lidar missions Board #: 021
This presentation will show the potential of ADM-Aeolus to retrieve aerosol optical properties (extinction and backscatter coefficients essentially) on different atmospheric scenarios. A newly developed feature finder algorithm enabling to detect aerosol and cloud targets in the scene will be described. Retrievals of aerosol properties at a better horizontal resolution based on the feature finder ... More
Presented by Dr. Thomas FLAMENT on 26 Jun 2017 at 17:30
Type: Poster Session: Posters: Large-scale campaigns
Track: Large-scale campaigns Board #: 101
In September 2016 the Sentinel-5p/TROPOMI pre-validation campaign CINDI-2 that was staged in Cabauw in The Netherlands, for comparison of MAXDOAS instruments for trace gas measurements. The vertical distribution of aerosol is crucial to understand for the retrieval of the trace gases. An overview of the campaign results for profile retrievals will be given.
Presented by Mr. Arnoud APITULEY on 29 Jun 2017 at 17:30
Type: Poster Session: Posters: Lidars applications in atmospheric structure and composition: aerosols, clouds, trace gases
Track: Lidars applications in atmospheric structure and composition: aerosols, clouds, trace gases Board #: 051
A tropospheric lidar system was installed in Punta Arenas, Chile (53.13°S, 70.88°W) in September 2016 under the collaboration project SAVERNET (Chile, Japan and Argentina) to monitor the atmosphere. Statistical analyses of the clouds and aerosols behavior and some cases of dust detected with lidar, at these high southern latitude and cold environment regions during three months (austral spring) ... More
Presented by Dr. Boris BARJA GONZALEZ on 29 Jun 2017 at 17:30
Type: Oral Session: Lidar applications in atmospheric structure and composition: aerosols, clouds, trace gases
Track: Lidars applications in atmospheric structure and composition: aerosols, clouds, trace gases
An airborne double-pulse 2-um IPDA lidar has been developed at NASA LaRC for measuring atmospheric CO2. Lidar validation using NASA B-200 aircraft over land and ocean under different conditions. IPDA lidar evaluation for land vegetation returns during full day background conditions, are presented. IPDA CO2 measurements compare well with model results driven from on-board in-situ sensor data. These ... More
Presented by Dr. Tamer REFAAT on 28 Jun 2017 at 12:00
Type: Oral Session: Recent advances in lidar technology
Track: Recent advances in lidar technology
We present a design study for an airborne multi-wavelength, multi-depolarization High Spectral Resolution Lidar to profile aerosol extinction, backscatter and depolarization in IR, VIS and UV. Fabry-Pérot interferometers are considered for spectral filtering in UV and IR, iodine-filtering technique is selected for VIS. Narrow field-of-view detection is foreseen to augment the FPI throughput. Lase ... More
Presented by Dr. Ilya SERIKOV on 26 Jun 2017 at 17:15
Type: Oral Session: Spaceborne-Airborne lidar missions
Track: Spaceborne-Airborne lidar missions
The 532 nm Green Optical Covariance Wind Lidar (GrOAWL) was flown on a NASA WB-57 research aircraft during the summer of 2016 to validate the instrument design and evaluate wind measurement capability and sensitivity. Comparisons with dropsondes and atmospheric models showed good agreement, demonstrating that a GrOAWL type instrument could provide high-value wind measurements from both airborne an ... More
Presented by Dr. Michael HARDESTY on 26 Jun 2017 at 11:45
Type: Poster Session: Posters: Lidar applications in atmospheric dynamics and surface exchanges: boundary layer, winds and turbulence
Track: Lidar applications in atmospheric dynamics and surface exchanges: boundary layer, winds and turbulence Board #: 061
Ocean University of China lidar team operated a pulse coherent Doppler lidar for the low level wind shear monitoring at the Beijing Capital International Airport in 2015. The experiment configuration, observation modes will be presented. A case study shows that the low level wind shear events at the southern end of 18R/36L were mainly caused by the trees and buildings along the glide path under st ... More
Presented by Mr. Hongwei ZHANG, Prof. Songhua WU on 27 Jun 2017 at 17:30
Type: Poster Session: Posters: Recent advances in lidar technology
Track: Recent advances in lidar technology Board #: 011
This paper discusses the construction and testing of an all semiconductor MOPA laser at 780nm for use in a HSRL. The HSRL system will use a Rubidium vapor cell and lock to the Ru D1 absorption line. The seed DFB laser diode will also tune the center and flanks of the D1 line between shots to multiplex several data channels onto each APD. This paper will discuss initial power scaling and beam qu ... More
Presented by Ed ELORANTA on 26 Jun 2017 at 17:30
Type: Poster Session: Posters: Spaceborne-Airborne lidar missions
Track: Spaceborne-Airborne lidar missions Board #: 021
The Aeolus Level-2B horizontal line-of-sight wind products will be discussed, including an introduction to the L2B processing methods. Realistic simulation of Aeolus followed by the operational processing chain is used to assess the error statistics of the L2B winds. A number of examples of the L2B winds in realistic atmospheric cases e.g. equatorial waves will be presented. The aim of the pres ... More
Presented by Mr. Michael RENNIE on 26 Jun 2017 at 17:30
Type: Poster Session: Posters: Lidars applications in atmospheric structure and composition: aerosols, clouds, trace gases
Track: Lidars applications in atmospheric structure and composition: aerosols, clouds, trace gases Board #: 051
In this work, a preliminary comparison of the variability of aerosol and water vapor measurements derived by two Rayleigh-Mie-Raman lidars, operating in synergy at a distance of 12 km, are presented. This activity is performed within the context of a Rome instrumental “Super Site”, offering quantitative and qualitative information for a wide range of atmospheric parameters for polluted areas i ... More
Presented by Dr. Davide DIONISI on 29 Jun 2017 at 17:30
Type: Poster Session: Posters: Lidar networks
Track: Lidar networks Board #: 091
Aerosol typing is essential for understanding the impact of the different aerosol sources on climate, weather system and air quality. An aerosol classification method for EARLINET (European Aerosol Research Lidar Network) measurements is introduced which makes use the Mahalanobis distance classifier. The performance of the automatic classification is tested against manually classified EARLINET dat ... More
Presented by Dr. Nikos PAPAGIANNOPOULOS on 27 Jun 2017 at 17:30
Type: Oral Session: Lidar tutorials
Track: Lidar tutorials
Presented by Dr. Ulla WANDINGER on 25 Jun 2017 at 16:30
Type: Poster Session: Posters: Lidars applications in atmospheric structure and composition: aerosols, clouds, trace gases
Track: Lidars applications in atmospheric structure and composition: aerosols, clouds, trace gases Board #: 051
A HSRL instrument at 1064nm, which employs an interferometric spectral filter, is under development at the Xi’an university of technology, China. A Fabry-Perot Etalon is selected as the spectral filter to obtain the aerosol scattering signal and suppress the Molecular scattering at 1064nm. Error analyses and sensitivity studies were carried out on the spectral transmittance characteristics of th ... More
Presented by Dr. Di HUIGE on 29 Jun 2017 at 17:30
Type: Poster Session: Posters: Lidars applications in atmospheric structure and composition: aerosols, clouds, trace gases
Track: Lidars applications in atmospheric structure and composition: aerosols, clouds, trace gases Board #: 051
The extinction efficiency factor, the scattering efficiency factor and the absorption efficiency factor of ellipsoidal aerosols with different size parameters and axes ratios are researched through the discrete dipole approximation. The results are very important for studying the atmospheric radiation transmission characteristics and retrieving the remote sensing data of the atmosphere.
Presented by Ms. yufeng WANG, Ms. huige DI, Mr. wenhui XIN, Mr. leilei LU, Mr. yuehui SONG, Prof. dengxin HUA, Mr. shichun LI on 29 Jun 2017 at 17:30
Type: Poster Session: Posters: Synergy of lidars and other sensors
Track: Synergy of lidars and other sensors Board #: 081
The study documents a complex fire event occurred on October 2016 over of Mosul-Iraq. Two fire outbreaks were spotted: a dark plume from oil wells and a white one from a sulfur plant. MISR instrument accessed the magnitude and variability of smoke plume. MISR data were compared with lidar retrievals of CALIPSO and CATS. SO2 concentration was evaluated with OMI. The detection of the event by multip ... More
Presented by Dr. Simona ANDREI, Dr. Cârstea EMIL, Dr. Dimitra KONSTA, Dr. Vassilis AMIRIDIS on 27 Jun 2017 at 17:30
Type: Poster Session: Posters: Lidars applications in atmospheric structure and composition: aerosols, clouds, trace gases
Track: Lidars applications in atmospheric structure and composition: aerosols, clouds, trace gases Board #: 051
The present study is focused on microphysics analysis of different cloud types observed by a multi-wavelength Raman lidar. Particle's content from a wide variety of cloud types, produced in various atmospheric environments, were investigated using data provided by lidar and validated using ECMWF ERA reanalysis. The results emphasized the capability of lidar instruments to detect multiple cloud lay ... More
Presented by Dr. Simona ANDREI on 29 Jun 2017 at 17:30
Type: Poster Session: Posters: Lidars applications in atmospheric structure and composition: aerosols, clouds, trace gases
Track: Lidars applications in atmospheric structure and composition: aerosols, clouds, trace gases Board #: 051
Lidar measurements of cirrus clouds are highly influenced by multiple scattering (MS). We therefore developed an iterative approach to correct elastic backscatter lidar signals for multiple scattering to obtain best estimates of single-scattering cloud optical depth and lidar ratio as well as of the ice crystal effective radius. The approach is based on the exploration of the effect of MS on the m ... More
Presented by Diego GOUVEIA on 29 Jun 2017 at 17:30
Type: Poster Session: Posters: Synergy of lidars and other sensors
Track: Synergy of lidars and other sensors Board #: 081
In this presentation, we demonstrate the application of a synergistic framework to airborne radar-lidar measurements to retrieve ice crystal size and concentration. In anticipation of the future EarthCARE mission, our focus is on the comparison of retrieved ice cloud microphysics from coordinated airborne and satellite measurements. On the basis of this study, the influence of sensor performance o ... More
Presented by Florian EWALD, Silke GROSS, Quitterie CAZENAVE on 27 Jun 2017 at 17:30
Type: Poster Session: Posters: Spaceborne-Airborne lidar missions
Track: Spaceborne-Airborne lidar missions Board #: 021
Multi-field of view multiple-scattering polarization lidar (MFMSPL) has been developed to measure enhanced backscattering and depolarization ratio from optically thick clouds. Collocated cloud radar observations and Monte Carlo simulations supported the system performance such as cloud detectability and values of depolarization ratio. The system is used to evaluate/improve algorithms for space-bo ... More
Presented by Prof. Hajime OKAMOTO on 26 Jun 2017 at 17:30
Type: Oral Session: Lidar applications in weather/meteorology, air quality and climate-global change
Track: Lidar applications in weather/meteorology, air quality and climate-global change
Lidar plays an important role in studies of the Earth system. NASA’s Earth Science Division (ESD) utilizes lidar as part of an integrated approach of active and passive remote sensing, in situ measurements, and computational modeling to study the components of the Earth system and their interactions. In this talk, a summary of both current and projected uses of surface-based, airborne, and sate ... More
Presented by Dr. Jack KAYE on 27 Jun 2017 at 09:00
Type: Poster Session: Posters: Recent advances in lidar technology
Track: Recent advances in lidar technology Board #: 011
As an application of the dimensionless parameterization concept proposed earlier for the characterization of lidar systems, the universal assessment of lidar capabilities in day and night condition is considered. The dimensionless parameters encapsulate the atmospheric conditions, the lidar optoelectronic characteristics, including the photodetector internal noise, and the sky background radiation ... More
Presented by Prof. Ravil AGISHEV, Prof. Comeron ADOLFO on 26 Jun 2017 at 17:30
Type: Poster Session: Posters: Lidars applications in atmospheric structure and composition: aerosols, clouds, trace gases
Track: Lidars applications in atmospheric structure and composition: aerosols, clouds, trace gases Board #: 051
We report on ground-based atmospheric concentration measurements of carbon dioxide, using a pulsed direct detection lidar operating at 2051 nm. The transmitter is based on a tunable parametric source emitting 10 mJ energy, 10 ns duration fourier-limited pulses. Range resolved concentration measurements have been carried out on the aerosol back-scattered signal. Cloud signals have been used to get ... More
Presented by Mr. Erwan CADIOU on 29 Jun 2017 at 17:30
Type: Oral Session: Lidar applications in atmospheric structure and composition: aerosols, clouds, trace gases
Track: Lidars applications in atmospheric structure and composition: aerosols, clouds, trace gases
High Spectral Resolution Lidars provide direct measurements of atmospheric extinction by observing the decrease in molecular scattering as a function of range. It is quite challenging to make these measurements precisely enough to measure at the low levels of extinction routinely present in the atmospheric boundary layer. This presentation will describe both hardware and algorithms developed for e ... More
Presented by Edwin ELORANTA on 29 Jun 2017 at 11:15
Type: Oral Session: Large scale campaigns
Track: Large-scale campaigns
From 12 to 28 September 2016, the CINDI-2 NO2 intercomparison campaign took place at the Cabauw research site in the Netherlands. Aimed principally at MAX-DOAS instruments, other techniques participated as well. The RIVM mobile lidar measured atmospheric NO2 profiles on six campaign days. Results show the development of NO2 concentrations during the day, as well as layered structures in the profil ... More
Presented by Mr. Stijn BERKHOUT on 29 Jun 2017 at 14:30
Type: Poster Session: Posters: Recent advances in lidar technology
Track: Recent advances in lidar technology Board #: 011
Owing to the rapid development and advancement in semiconductor technologies, An NO2 DIAL system based on the Scheimpflug lidar technique has been developed while employing high-power continuous-wave (CW) blue laser diodes with a comparable spectral width to the NO2 absorption lines in the blue region. In this work, we demonstrate a NO2 CW-DIAL system and then experimentally validate the feasibili ... More
Presented by Mr. Peng GUAN on 26 Jun 2017 at 17:30
Type: Poster Session: Posters: Recent advances in lidar technology
Track: Recent advances in lidar technology Board #: 011
A scanning Scheimpflug lidar system based on the Scheimpflug principle has been developed by employing a high power multimode 808 nm laser diode and a highly integrated CMOS sensor in Dalian University of Technology, Dalian, Northern China. Long term atmospheric scanning measurement of the urban area has been performed for the emission sources studies.
Presented by Dr. Liang MEI on 26 Jun 2017 at 17:30
Type: Poster Session: Posters: Recent advances in lidar technology
Track: Recent advances in lidar technology Board #: 011
Polarization and dual-band Scheimpflug lidar systems based on the Scheimpflug principle have been developed by employing low-cost, compact laser diodes and two highly integrated CMOS sensors. Atmospheric backscattering signal is recorded by titled image sensors satisfying the Scheimpflug principle. The first attempt of atmospheric particle measurements by employing the polarization and dual-band ... More
Presented by Dr. Liang MEI on 26 Jun 2017 at 17:30
Type: Oral Session: Lidar applications in atmospheric dynamics and surface exchanges: boundary layer, winds and turbulence
Track: Lidar applications in atmospheric dynamics and surface exchanges: boundary layer, winds and turbulence
The mixed layer is the thickness of air just above the surface where heat, moisture, momentum, and pollutants are turbulently dispersed. Determining the depth of this layer is not trivial, as different methods to quantify its depth often yield dissimilar results. In this presentation, many techniques and measurements from a single Doppler lidar are combined to give a single estimate of the mixed ... More
Presented by Timothy BONIN on 27 Jun 2017 at 16:00
Type: Poster Session: Posters: Spaceborne-Airborne lidar missions
Track: Spaceborne-Airborne lidar missions Board #: 021
The CNES/DLR MERLIN satellite mission aims at measuring methane dry-air mixing ratio column (XCH4) and thus improving surface flux estimates. In order to get a 1% precision on XCH4 measurements, MERLIN signal processing assumes an averaging of data over 50 km. The induced biases due to IPDA lidar non linear equation are not compliant with accuracy requirements. This paper analyzes averaging biases ... More
Presented by Mr. Yoann TELLIER on 26 Jun 2017 at 17:30
Type: Oral Session: Lidar applications in weather/meteorology, air quality and climate-global change
Track: Lidar applications in weather/meteorology, air quality and climate-global change
During the NASA 2016 KORUS-AQ campaign, the ground based NASA GSFC ozone lidar and balloon borne instrumentation were deployed to the remote Taehwa Forest site (37.3 N, 127.3 E, 151 m AGL) to characterize the transport of pollution downwind of the Seoul metropolitan region. On most days from 02 May to 10 June 2016, continuous hours of lidar profiles of ozone were measured. Select days are shown to ... More
Presented by Dr. John SULLIVAN on 27 Jun 2017 at 09:30
Type: Poster Session: Posters: Lidar applications in weather/meteorology, air quality and climate-global change
Track: Lidar applications in weather/meteorology, air quality and climate-global change Board #: 041
The purpose of the study is to analyzes the seasonal variability of biomass burning aerosol observed over Romania using forward dispersion calculations based on FLEXPART model. The model was set up using as input Modis fire data with a degree of confidence over 25% and transforming the emitted power in emission rate. The modelled aerosols in this setup was black carbon coated by organics. Distrib ... More
Presented by Mr. Andrei-Victor NICOLAE on 27 Jun 2017 at 17:30
Type: Poster Session: Posters: Synergy of lidars and other sensors
Track: Synergy of lidars and other sensors Board #: 081
The study goal is to assess the chemical and optical propertiesof aerosols present in the lofted layers and at the ground.The biomass burning aerosolswere evaluated in low level layers from multi-wavelength lidar measurements, while chemical composition at ground was assessedusing an Aerosol Chemical Speciation Monitor and an Aethalometer. Classification of aerosol type and specific organic marker ... More
Presented by Ms. Cristina MARIN on 27 Jun 2017 at 17:30
Type: Poster Session: Posters: Lidar applications in atmospheric dynamics and surface exchanges: boundary layer, winds and turbulence
Track: Lidar applications in atmospheric dynamics and surface exchanges: boundary layer, winds and turbulence Board #: 061
Atmospheric boundary layer (ABL) height is important as ABL has direct contact with Earth and exchange processes between the land or water and the atmosphere occur in this layer. Lidar can monitor the characteristic of the lower troposphere with great accuracy and reliability. This study reports the variation in the ABL over Palampur Himachal Pradesh, India in different seasons and time. We used I ... More
Presented by Mr. Jaswant JASWANT on 27 Jun 2017 at 17:30
Type: Oral Session: Lidar applications in atmospheric dynamics and surface exchanges: boundary layer, winds and turbulence
Track: Lidar applications in atmospheric dynamics and surface exchanges: boundary layer, winds and turbulence
A low-power lidar system based in Manchester, United Kingdom has been developed to measure temperature profiles in the nocturnal urban boundary layer. The lidar transmits using a 355nm diode-pumped solid state Nd:YAG laser and uses two narrow-band interference filters to filter out rotational Raman lines that are dependent on temperature. The spectral response of the lidar is calibrated using a mo ... More
Presented by Dr. Hugo RICKETTS on 27 Jun 2017 at 16:45
Type: Poster Session: Posters: Lidar applications in weather/meteorology, air quality and climate-global change
Track: Lidar applications in weather/meteorology, air quality and climate-global change Board #: 041
On April 2015, Calbuco volcano located in Chile erupted and affected the incident solar radiation, air quality, visibility and normal air traffic over Buenos Aires, Argentina. This event was monitoring by CEILAP using an AERONET sunphotometer, ultraviolet and visible radiometers and a fluorescence and Raman multispectral lidar based on 32 channel spectrometer. In this work, a volcanic ash inelast ... More
Presented by Mr. EZEQUIEL PAWELKO on 27 Jun 2017 at 17:30
Type: Poster Session: Posters: Lidars applications in atmospheric structure and composition: aerosols, clouds, trace gases
Track: Lidars applications in atmospheric structure and composition: aerosols, clouds, trace gases Board #: 051
CALIPSO recordings have been used for monitoring dust storms over the open seas in south of the Iran plateau. Monthly averaged values of aerosol optical depth (AOD),show dust activities are frequent during May to September in the region. Variations of integrated attenuated backscatter verses the AOD, indicate the 120-day Levar wind advects dust from the Hamoon lake to the Oman-, Arabian-sea and ... More
Presented by Prof. Hamid KHALESIFARD on 29 Jun 2017 at 17:30
Type: Poster Session: Posters: Spaceborne-Airborne lidar missions
Track: Spaceborne-Airborne lidar missions Board #: 021
The Methane Remote Sensing Lidar Mission (MERLIN), currently in phase C, is a joint cooperation between France and Germany on the development of a spatial Integrated Path Differential Absorption (IPDA) lidar to conduct global observations of atmospheric methane. This presentation will focus on the status of a lidar mission data simulator and processor developed at LMD, Ecole Polytechnique, Franc ... More
Presented by Dr. Olivier CHOMETTE on 26 Jun 2017 at 17:30
Type: Poster Session: Posters: Recent advances in lidar technology
Track: Recent advances in lidar technology Board #: 011
Extra-laser cavity CO2-TEA laser pulse clipper using gas breakdown techniques for high spatial resolution pollution monitoring is presented. Complete extinction of the nitrogen tail, that degrades the range resolution of LIDARS, is obtained at pressures from 375 up to 1500 torr for nitrogen and argon gases whereas an attenuation coefficient of almost 102 is achieved for helium. Excellent energy st ... More
Presented by Dr. Taieb GASMI CHERIFI on 26 Jun 2017 at 17:30
Type: Poster Session: Posters: Recent advances in lidar technology
Track: Recent advances in lidar technology Board #: 011
A CW-laser radar system developed for combustion diagnostics is described. The system is based on triangulation to attain range information. A portable system has been constructed and here we show some results from measurements in various flames, for example Rayleigh scattering thermometry and monitoring of particle distributions with high temporal and spatial resolution. The concept can equally w ... More
Presented by Dr. Joakim BOOD on 26 Jun 2017 at 17:30
Type: Poster Session: Posters: Recent advances in lidar technology
Track: Recent advances in lidar technology Board #: 011
A new polarized design for the MPLNET Micro Pulse Lidar (MPL) was recently introduced. Like the original polarized MPL described by Flynn et al., the new design replaces the depolarizer with an actively controlled optic, but uses a ferroelectric liquid crystal (FLC) to modulate the transmitted polarization states. Both designs require calibration of optical components to remove systematic bias. He ... More
Presented by Mr. Sebastian STEWART, Dr. Ellsworth WELTON on 26 Jun 2017 at 17:30
Type: Poster Session: Posters: Recent advances in lidar technology
Track: Recent advances in lidar technology Board #: 011
Particle depolarization ratio is an essential parameter for aerosol classification; the accuracy of the depolarization calibration is of prime importance for volcanic ash monitoring. We present a method applied to calibrate the depolarization UV Raman lidars which are part of the UK volcanic ash monitoring network. The ∆90 method is discussed. Different strategies to avoid saturation are compare ... More
Presented by Dr. Joelle BUXMANN on 26 Jun 2017 at 17:30
Type: Oral Session: Lidar applications in weather/meteorology, air quality and climate-global change
Track: Lidar applications in weather/meteorology, air quality and climate-global change
We investigated the relation between major tropical volcanic eruptions in the equatorial region and the stratospheric aerosol data, which have been collected by the ground based lidar observations at at Equatorial Atmosphere Radar site between 2004 and 2015 and the CALIOP observations in low latitude between 2006 and 2015. We found characteristic dynamic behavior of volcanic stratospheric aerosol ... More
Presented by Prof. Makoto ABO on 27 Jun 2017 at 10:15
Type: Oral Session: Lidar applications in atmospheric dynamics and surface exchanges: boundary layer, winds and turbulence
Track: Lidar applications in atmospheric dynamics and surface exchanges: boundary layer, winds and turbulence
Field observations for the wake vortices by Coherent Doppler Lidar (CDL) has been carried out in the Beijing Capital International Airport to investigate the wake vortices evolution characteristics and the near-ground effect. This paper introduces the atmospheric turbulence and dynamic wake vortices monitoring technique, successfully demonstrating that the CDL can capture the key characteristics o ... More
Presented by Prof. Songhua WU, Ms. Xiaochun ZHAI on 27 Jun 2017 at 15:00
Type: Poster Session: Posters: Recent advances in lidar technology
Track: Recent advances in lidar technology Board #: 011
RALMO LIDAR is operated at MeteoSwiss and provides continuous measurements of temperature since 2007. While the water vapor has been acquired by the Licel acquisition system since 2007, the Pure Rotational Raman (PRR) channels have been migrated to a new, faster acquisition system, the FAST ComTec P7888, since August 2015. We present a characterization of the FAST ComTec P7888, namely its dead-t ... More
Presented by Dr. Giovanni MARTUCCI on 26 Jun 2017 at 17:30
Type: Poster Session: Posters: Lidar applications in atmospheric dynamics and surface exchanges: boundary layer, winds and turbulence
Track: Lidar applications in atmospheric dynamics and surface exchanges: boundary layer, winds and turbulence Board #: 061
To advance our understanding of severe local storms, measurements of environmental conditions around the severe local storms are important. During the PECAN (Plains Elevated Convection at Night) field campaign 2015, we demonstrated that airborne Raman Lidar provide unique measurements to better understand convective cloud initiation, storm evolution, and storm-environment interactions. During PECA ... More
Presented by Mr. Guo LIN on 27 Jun 2017 at 17:30
Type: Poster Session: Posters: Lidar applications in atmospheric dynamics and surface exchanges: boundary layer, winds and turbulence
Track: Lidar applications in atmospheric dynamics and surface exchanges: boundary layer, winds and turbulence Board #: 061
Simultaneous measurements of thermodynamic variables in the daytime convective boundary layer were made by rotational Raman lidar, water vapor differential absorption lidar and Doppler lidar. Mean thermodynamic profiles as well as variances and third-order moments of the turbulent fluctuations of temperature, absolute humidity and vertical wind were derived. These data are used to evaluate the per ... More
Presented by Dr. Shravan Kumar MUPPA on 27 Jun 2017 at 17:30
Type: Poster Session: Posters: Lidar applications in weather/meteorology, air quality and climate-global change
Track: Lidar applications in weather/meteorology, air quality and climate-global change Board #: 041
In November 2012 the Raman Lidar system BASIL, located at the Univ. of Basilicata (Potenza), was approved to enter in NDACC, with the goal of providing accurate routine measurements of the vertical profiles of atmospheric temperature and water vapour mixing ratio. In this presentation we illustrate and discuss water vapor mixing ratio and temperature measurements carried out during these four ye ... More
Presented by Mr. Benedetto DE ROSA on 27 Jun 2017 at 17:30
Session: Exhibition
Board #: 999
on 26 Jun 2017 at 09:00
Type: Poster Session: Posters: Lidars applications in atmospheric structure and composition: aerosols, clouds, trace gases
Track: Lidars applications in atmospheric structure and composition: aerosols, clouds, trace gases Board #: 051
Cirrus (Ci) clouds affect the radiative balance. A polarized Micro Pulse Lidar (P-MPL), standard MPLNET system, and recently deployed at the Atmospheric Observatory ‘El Arenosillo’ (ARN), is used for Ci detection for the first time. Radiative effects of a Ci case observed over ARN are examined, as reference for future Ci observations. Optical and macrophysical properties are retrieved, and use ... More
Presented by Ms. Ana DEL ÁGUILA PÉREZ on 29 Jun 2017 at 17:30
Type: Poster Session: Posters: Lidars applications in atmospheric structure and composition: aerosols, clouds, trace gases
Track: Lidars applications in atmospheric structure and composition: aerosols, clouds, trace gases Board #: 051
Airborne Lidar backscatter data is used to determine in- and out-of-cloud regions. Lidar measurements of water vapor together with model temperature fields are used to calculate relative humidity over ice (RHi). Based on temperature and RHi we identify different stages of cirrus evolution; homogeneous and heterogeneous freezing, depositional growth, ice sublimation and sedimentation. We will prese ... More
Presented by Mr. Benedikt URBANEK on 29 Jun 2017 at 17:30
Type: Poster Session: Posters: Lidars applications in atmospheric structure and composition: aerosols, clouds, trace gases
Track: Lidars applications in atmospheric structure and composition: aerosols, clouds, trace gases Board #: 051
This presentation reports aerosol lidar measurements carried out by the Raman lidar BASIL in the frame of the HOPE Experiment. Measurements reveal the presence of a clear-air dark band phenomenon (i.e. the appearance of a minimum in lidar backscatter echoes) in the central portion of the convective boundary layer. The phenomenon is visible at all wavelengths (355, 532, 1064 nm). The presentation w ... More
Presented by Prof. Paolo DI GIROLAMO on 29 Jun 2017 at 17:30
Type: Poster Session: Posters: Lidars applications in atmospheric structure and composition: aerosols, clouds, trace gases
Track: Lidars applications in atmospheric structure and composition: aerosols, clouds, trace gases Board #: 051
Aerosols can play the role of cloud and ice condensation nuclei. This study shows a set of analysis in distinct scenarios of cloud cover during day/nightime measurements using lidar, all-sky camera and solar photometry. The retrieved products are studied to obtain aerosol optical and physical properties in the vicinity of clouds. In this approach cloud geometric and optical properties should be re ... More
Presented by Mr. Jonatan SILVA on 29 Jun 2017 at 17:30
Type: Oral Session: Spaceborne-Airborne lidar missions
Track: Spaceborne-Airborne lidar missions
In order to improve our current knowledge on the budgets of the two most important anthropogenic greenhouse gases, CO2 and CH4, an airborne mission on board the German research aircraft HALO in coordination with smaller Cessna aircraft is going to be conducted in April/May 2017. The goal of CoMet is to combine a suite of the best currently available active (lidar) and passive remote sensors as wel ... More
Presented by Dr. Andreas FIX on 26 Jun 2017 at 12:00
Type: Poster Session: Posters: Synergy of lidars and other sensors
Track: Synergy of lidars and other sensors Board #: 081
A new Land-Atmosphere Feedback Observatory (LAFO) is currently being setup at University of Hohenheim. LAFO will be equipped with a combination of scanning lidar systems: water-vapor differential absorption lidar (DIAL), temperature rotational Raman lidar (RRL), and Doppler lidars. LAFO's novel instrumental design and composition will allow simultaneous observations of the constitution of soil and ... More
Presented by Dr. Florian SPÄTH on 27 Jun 2017 at 17:30
Type: Poster Session: Posters: Recent advances in lidar technology
Track: Recent advances in lidar technology Board #: 011
Water-vapor and temperature profiles with high accuracy and range resolution from the surface to the lower troposphere are fundamental for accurate weather forecasts, process studies, and validation of satellites. Within the ACROSS project (Advanced Remote Sensing - Ground Truth Demo and Test Facilities) of the Helmholtz Alliance, a new scanning rotational Raman lidar system fulfilling these requi ... More
Presented by Dr. Diego LANGE on 26 Jun 2017 at 17:30
Type: Poster Session: Posters: Recent advances in lidar technology
Track: Recent advances in lidar technology Board #: 011
The Compact High-Power Shipborne Doppler Lidar (CHiPSDoL) based on High-Spectral-Resolution technique has been built up at the Ocean University of China for the measurement of the wind field and the properties of the aerosol and clouds in the troposphere. The design of the CHiPSDoL including the transceiver, the injection seeding, the locking and the frequency measurement will be presented in deta ... More
Presented by Prof. Songhua WU on 26 Jun 2017 at 17:30
Type: Oral Session: Lidar applications in atmospheric dynamics and surface exchanges: boundary layer, winds and turbulence
Track: Lidar applications in atmospheric dynamics and surface exchanges: boundary layer, winds and turbulence
Airport capacity is often limited by the minimum distance separation between two aircrafts established by woldwide institutions and preventing a follower aircraft to encounter too severe wake vortices (or wake turbulence) generated by the leader. Scanning Doppler Lidars have been widely used since ten years to characterize wake vortices (detection, localization and circulation). This study compare ... More
Presented by Dr. Ludovic THOBOIS on 27 Jun 2017 at 15:15
Type: Poster Session: Posters: Lidars applications in atmospheric structure and composition: aerosols, clouds, trace gases
Track: Lidars applications in atmospheric structure and composition: aerosols, clouds, trace gases Board #: 051
WRF-Chem model data on aerosol fractions' concentrations are used to simulate lidar (ceilometer) attenuated aerosol backscatter signals over Raciborz, Poland during a strong advection episode in August 2015. These are compared to actual retrievals obtained by CHM15k 'Nimbus' ceilometer located in Raciborz. While the overall diurnal PBL evolution is similar, significant differences are observed for ... More
Presented by Mr. Artur SZKOP on 29 Jun 2017 at 17:30
Type: Poster Session: Posters: Recent advances in lidar technology
Track: Recent advances in lidar technology Board #: 011
Since 2010, the Raman dual-FOV Lidar system permits the retrieval of microphysical properties of liquid-water clouds during nighttime. A new Lidar depolarization approach was recently introduced, which permits the retrieval of these properties as well, with high temporal resolution and during daytime. To use this new method, the Lidar system was upgraded, by adding a three channel depolarization r ... More
Presented by Mr. Cristofer Andres JIMENEZ on 26 Jun 2017 at 17:30
Type: Oral Session: Middle and upper atmospheric lidar
Track: Middle and upper atmospheric lidar
We compare temperatures derived from the Rayliegh lidar to those from the Ozone DIAL lidar for a 20 year subset (1993-2013) of the 39 year OHP data record. The two lidar systems produce statistically identical temperatures over the span of decades and there is generally a good agreement with temperatures from MLS and SABER below ~70 km. Significant differences exist in the upper mesosphere betwee ... More
Presented by Robin WING on 29 Jun 2017 at 16:30
Type: Poster Session: Posters: Synergy of lidars and other sensors
Track: Synergy of lidars and other sensors Board #: 081
This work focuses on a comparison of aerosol profiles retrieved by a synergic use of a radiometer and a LIDAR to model results. A case study of a significant transport of biomass burning aerosol to Belsk, Poland in August 2015 is analyzed. Special attention is paid to the analysis of aerosols in the planetary boundary layer and those observed above it. Vertical profiles both of fine and coarse mod ... More
Presented by Mr. Aleksander PIETRUCZUK on 27 Jun 2017 at 17:30
Type: Poster Session: Posters: Middle and upper atmospheric lidar
Track: Middle and upper atmospheric lidar Board #: 031
We present an unprecedented comparison of temperature measurements from the Rayleigh-scatter (RS) and sodium (Na) lidar techniques. The extension of the RS technique into the lower thermosphere that has been achieved by the group at Utah State University (USU), enables simultaneous, common-volume measurements by the two lidar systems hosted in the Atmospheric Lidar Observatory at USU. The two lida ... More
Presented by Dr. Leda SOX on 26 Jun 2017 at 17:30
Type: Poster Session: Posters: Lidar networks
Track: Lidar networks Board #: 091
Long term analysis and climatology of aerosol extinction and backscatter profiles using 15 years of lidar data set derived from a Raman lidar at Thessaloniki station is presented. All measurements have been processed with the latest version 4 of the Single Calculus Chain and are compared with the results from the current operational retrieval algorithm. The SCC has been developed among the EARLINE ... More
Presented by Mr. Nikolaos SIOMOS, Mrs. Kalliopi Artemis VOUDOURI, Mr. Dimitris BALIS on 27 Jun 2017 at 17:30
Type: Poster Session: Posters: Synergy of lidars and other sensors
Track: Synergy of lidars and other sensors Board #: 081
The minimum requirement for particle microphysical retrievals using stand-alone lidar data is a setup with 3 profiles of backscatter coefficient (355, 532, 1064 nm), and 2 of extinction coefficient (355, 532 nm). However, there are a lot of instruments that do not have that complete setup in EARLINET or LALINET. The aim of this work is to find alternative setups that, in combination with ... More
Presented by Mr. Pablo ORTIZ AMEZCUA on 27 Jun 2017 at 17:30
Type: Oral Session: Synergy of lidars and other sensors
Track: Synergy of lidars and other sensors
During NAWDEX coordinated flights with the German research aircraft HALO and the French Falcon were performed; both equipped with similar payload at different wavelengths to study wavelengths effects on retrieved properties and synergistic analysis. Additionally A-Train underpasses with HALO were performed during NARVAL and NAWDEX. In our presentation we will give an overview of measurements and i ... More
Presented by Silke GROSS on 30 Jun 2017 at 09:30
Type: Oral Session: Lidar networks
Track: Lidar networks
The NASA Micro Pulse Lidar Network (MPLNET) is a global federated network of Micro-Pulse Lidars (MPL) co-located with the NASA Aerosol Robotic Network (AERONET). MPLNET began in 2000, and there are currently 17 long-term sites, numerous field campaigns, and more planned sites on the way. We have developed a new Version 3 processing system including the deployment of polarized MPLs across the netwo ... More
Presented by Dr. Ellsworth WELTON on 30 Jun 2017 at 14:45
Type: Poster Session: Posters: Lidars applications in atmospheric structure and composition: aerosols, clouds, trace gases
Track: Lidars applications in atmospheric structure and composition: aerosols, clouds, trace gases Board #: 051
A DIfferential Absorption Lidar (DIAL) is being developed at National Atmospheric Research Laboratory, Gadanki (13oN, 79oE), India for measurement of ozone concentrations to understand Upper troposphere and Lower Stratosphere (UTLS) exchange processes. The objectives includes establishing a relation between Cold Point Tropopause (CPT) and ozone concentrations over Indian region. The design details ... More
Presented by Dr. K Raghunath K on 29 Jun 2017 at 17:30
Type: Oral Session: Large scale campaigns
Track: Large-scale campaigns
The benefits of active remote sensing from space are increasingly recognized during the last decades. Following first aerosol/cloud lidars now a number of space missions are planned or proposed to measure additional atmospheric parameters. Airborne campaigns play a significant role in the preparation of mission proposals, in refining the instrument specification during the development phase, and f ... More
Presented by Dr. Martin WIRTH on 29 Jun 2017 at 14:00
Type: Poster Session: Posters: Lidars applications in atmospheric structure and composition: aerosols, clouds, trace gases
Track: Lidars applications in atmospheric structure and composition: aerosols, clouds, trace gases Board #: 051
The Met Office has recently established a series of 10 lidar / sun-photometer installations across the UK, consolidating their ash / aerosol remote sensing capabilities. In addition to this network, the Met Office have acquired the Civil Contingency Aircraft (MOCCA) which allows airborne in-situ measurements of ash / aerosol scattering and size-distributions. Two case studies are presented in whic ... More
Presented by Mr. Martin OSBORNE on 29 Jun 2017 at 17:30
Type: Oral Session: Recent advances in lidar technology
Track: Recent advances in lidar technology
Demonstration data from a prototype of a low-cost, diode-laser-based high spectral resolution lidar will be presented.
Presented by Dr. Matthew HAYMAN on 26 Jun 2017 at 16:45
Type: Poster Session: Posters: Recent advances in lidar technology
Track: Recent advances in lidar technology Board #: 011
A new depolarization channel has been implemented in Barcelona lidar. The optical and mechanical design are presented. The special configuration of the total power channel is also detailed, with the relevant aspects in measurement inversion. Some preliminary measurements are presented for Saharan dust intrusion events.
Presented by Prof. Alejandro RODRÍGUEZ-GÓMEZ, Mr. Michaël SICARD, Prof. Adolfo COMERÓN on 26 Jun 2017 at 17:30
Type: Oral Session: Lidar tutorials
Track: Lidar tutorials
Presented by Silke GROSS on 25 Jun 2017 at 14:00
Type: Oral Session: Lidar tutorials
Track: Lidar tutorials
Presented by Dr. Albert ANSMANN on 25 Jun 2017 at 15:30
Type: Poster Session: Posters: Lidars applications in atmospheric structure and composition: aerosols, clouds, trace gases
Track: Lidars applications in atmospheric structure and composition: aerosols, clouds, trace gases Board #: 051
A multi-wavelength and polarization lidar(elastic signals at 1064.2nm and 354.7nm, polarization signals at 532.1nm) was developed to investigate the smog aerosols around Xi’an City. And observations were performed from 2014 to 2015. An inversion algorithm for aerosol particle distribution is used to retrieve the micro-physical properties, such as effective radius and number concentration. The ch ... More
Presented by Prof. Huige DI on 29 Jun 2017 at 17:30
Type: Poster Session: Posters: Lidars applications in atmospheric structure and composition: aerosols, clouds, trace gases
Track: Lidars applications in atmospheric structure and composition: aerosols, clouds, trace gases Board #: 051
We present in this study results of linear volume depolarization ratio profiles obtained by a depolarization lidar in operation in Natal, Brazil. The DUSTER system has 4 channels, namely: 1064, 532 s/p and 355 nm. This system is calibrated with a half-wave plate using the Δ90 methodology. The data obtained from this system is correlated with satellite plataforms (CALIOP) and backtrajectory model ... More
Presented by Mr. Anderson GUEDES, Dr. Eduardo LANDULFO, Mr. Marcos Paulo ARAÚJO on 29 Jun 2017 at 17:30
Type: Poster Session: Posters: Spaceborne-Airborne lidar missions
Track: Spaceborne-Airborne lidar missions Board #: 021
A key component of CALIPSO's new V4.1 lidar L2 data products is a revised set of PDFs used by the CAD algorithm. The new PDFs are more physically realistic than earlier versions, in which the occurrence frequency of aerosols at higher altitudes was noticeably underestimated. Furthermore, the V4.1 CAD algorithm is now applied to all layers detected. This work will describe the PDF and CAD changes i ... More
Presented by Dr. Zhaoyan LIU on 26 Jun 2017 at 17:30
Type: Poster Session: Posters: Lidars applications in atmospheric structure and composition: aerosols, clouds, trace gases
Track: Lidars applications in atmospheric structure and composition: aerosols, clouds, trace gases Board #: 051
Sun/sky photometer data are inverted simultaneously with Lidar signal to retrieve aerosols properties (column-integrated and vertical profiles). For each AERONET/EARLINET site, data are received and archived at AERIS/ICARE Data and Services Center, a component of the ACTRIS Data Centre, and inverted with the GARRLiC algorithm. This centralized processing is applied to various Lidar systems. Descr ... More
Presented by Dr. Jacques DESCLOITRES on 29 Jun 2017 at 17:30
Type: Poster Session: Posters: Recent advances in lidar technology
Track: Recent advances in lidar technology Board #: 011
The Multi-wavelength Raman-Fluorescence Lidar (MRFL) has been built at the framework of SACOL, Lanzhou University. The objective of MRFL is to obtain multi-wavelength measurements of cloud and aerosol with high temporal and spatial resolution. During last three years, MRFL system has been deployed in two field campaigns coupled with other instruments and in situ sampling. Here, we provide an overv ... More
Presented by Dr. Tian ZHOU on 26 Jun 2017 at 17:30
Type: Poster Session: Posters: Recent advances in lidar technology
Track: Recent advances in lidar technology Board #: 011
An advanced airborne triple-pulse 2-um IPDA lidar is under development at NASA LaRC that targets both CO2 and H2O measurements simultaneously and independently. This lidar is an upgrade to the successfully demonstrated CO2 2-um double-pulse IPDA. Upgrades include high-energy, high-repetition rate 2-um triple-pulse laser transmitter, innovative wavelength control and advanced MCT electron-initiated ... More
Presented by Dr. Mulugeta PETROS on 26 Jun 2017 at 17:30
Type: Poster Session: Posters: Lidars applications in atmospheric structure and composition: aerosols, clouds, trace gases
Track: Lidars applications in atmospheric structure and composition: aerosols, clouds, trace gases Board #: 051
We have studied on a ground based coherent DIAL for vertical profiling of water vapor density using 1.5um laser wavelength. A coherent lidar has an advantage in daytime measurement compared with incoherent lidar because the influence of background light is greatly low. We had developed the wavelength locking circuit, and the wavelength stabilities of 0.123 pm which corresponds to 16 MHz are real ... More
Presented by Dr. Masaharu IMAKI on 29 Jun 2017 at 17:30
Type: Poster Session: Posters: Lidars applications in atmospheric structure and composition: aerosols, clouds, trace gases
Track: Lidars applications in atmospheric structure and composition: aerosols, clouds, trace gases Board #: 051
In this study is evaluated the radiative effect on the system earth-atmosphere of tiny cirrus clouds taking into account the different processes that take place in their formation. The radiative effect is evaluated using the Fu-Liou-Gu radiative transfer model expressly adapted for lidar measurements.
Presented by Dr. Davide DIONISI on 29 Jun 2017 at 17:30
Type: Poster Session: Posters: Lidars applications in atmospheric structure and composition: aerosols, clouds, trace gases
Track: Lidars applications in atmospheric structure and composition: aerosols, clouds, trace gases Board #: 051
A method for determining the calibration factor of the water vapor channel of a Raman lidar, based on zenith measurements of diffuse sunlight and on assumptions regarding some system parameters and Raman scattering models, has been applied to the lidar system of Universitat Politècnica de Catalunya (UPC; Technical University of Catalonia, Spain). Results will be analyzed in terms of repeatability ... More
Presented by Dr. Constantino MUÑOZ-PORCAR on 29 Jun 2017 at 17:30
Type: Poster Session: Posters: Lidars applications in atmospheric structure and composition: aerosols, clouds, trace gases
Track: Lidars applications in atmospheric structure and composition: aerosols, clouds, trace gases Board #: 051
A characterization of low-level clouds and how they are affected by dust aerosols, which are assumed to be the most important ice nuclei, over the Arctic area is presented. The study is based on observations from CALIPSO and CloudSat. Based on the ice cloud fraction calculations, clouds freeze in warmer temperatures in the presence of dust particles than with other aerosol types. A difference in t ... More
Presented by Ms. MARIA FILIOGLOU on 29 Jun 2017 at 17:30
Type: Poster Session: Posters: Lidar networks
Track: Lidar networks Board #: 091
The Single Calculus Chain (SCC) is an automatic and flexible tool to analyze raw lidar data using EARLINET quality assured retrieval algorithms. It has been already demonstrated the SCC can retrieve reliable aerosol backscatter and extinction coefficient profiles for different lidar systems. In this paper we provide an overview of new SCC products like particle linear depolarization ratio, cloud m ... More
Presented by Giuseppe D'AMICO on 27 Jun 2017 at 17:30
Type: Poster Session: Posters: Lidar networks
Track: Lidar networks Board #: 091
The EARLINET database is facing a complete reshaping to meet the wide request for more intuitive products and to face the even wider request related to the new initiatives such as the Copernicus programme. The new design has been carried out in continuity with the past, to take advantage from long term database. In particular, the new structure will provide information suitable for synergy with o ... More
Presented by Dr. LUCIA MONA on 27 Jun 2017 at 17:30
Type: Oral Session: Spaceborne-Airborne lidar missions
Track: Spaceborne-Airborne lidar missions
The Cloud-Aerosol Transport System (CATS) lidar on-board the International Space Station (ISS) provides vertically resolved profiles of aerosols and clouds since February 2015. In this study CATS retrievals are validated based on the European Aerosol Research Lidar Network (EARLINET). This validation activity is performed through collocated CATS-EARLINET measurements and the comparison of particle ... More
Presented by Mr. Emmanouil PROESTAKIS on 26 Jun 2017 at 11:00
Type: Oral Session: Lidar applications in weather/meteorology, air quality and climate-global change
Track: Lidar applications in weather/meteorology, air quality and climate-global change
The European Space Agency’s wind mission, ADM-Aeolus, will be launched in December 2017. It will provide line-of-sight profiles of winds, backscatter and extinction within 3 hours of sensing, with the objective to improve weather forecasts and advance modelling of atmospheric dynamics and climate. The satellite will undergo thermal vacuum testing and final characterization in spring 2017. In thi ... More
Presented by Dr. Anne Grete STRAUME-LINDNER on 27 Jun 2017 at 11:00
Type: Poster Session: Posters: Spaceborne-Airborne lidar missions
Track: Spaceborne-Airborne lidar missions Board #: 021
ATLID stands for “ATmospheric LIDar” and is the lidar to be flown on the Earth Clouds and Radiation Explorer (EarthCARE) platform in early 2019. ATLID is a High-Spectral Resolution (HSRL) system operating at 355nm. This presentation will introduce the ATLID algorithms being implemented in order to derive cloud and aerosol optical properties. Areas of particular attention are the averaging str ... More
Presented by Dr. David DONOVAN on 26 Jun 2017 at 17:30
Type: Oral Session: Spaceborne-Airborne lidar missions
Track: Spaceborne-Airborne lidar missions
We introduce the development of EarthCARE Level 2 layer products derived from profile measurements of the high-spectral-resolution lidar ATLID and column products obtained from combined information of ATLID and the Multi-Spectral Imager (MSI). Layer products include cloud top height as well as aerosol layer boundaries and mean optical properties along track. Synergistic column products comprise cl ... More
Presented by Dr. Ulla WANDINGER on 26 Jun 2017 at 10:00
Type: Oral Session: Spaceborne-Airborne lidar missions
Track: Spaceborne-Airborne lidar missions
This paper describes several enhancements in the version 4 aerosol subtyping and lidar ratio selection algorithms of the Cloud-Aerosol Lidar with Orthogonal Polarization (CALIOP) instrument. The CALIOP subtyping algorithm determines the most likely aerosol type from CALIOP measurements (attenuated backscatter, estimated particulate depolarization ratios δe, layer altitude), and surface type. The ... More
Presented by Dr. Ali OMAR on 26 Jun 2017 at 10:15
Type: Oral Session: Lidar applications in weather/meteorology, air quality and climate-global change
Track: Lidar applications in weather/meteorology, air quality and climate-global change
Rain evaporation significantly contributes to moisture and heat cloud budgets. In this paper, we illustrate an approach to estimate the median volume raindrop diameter and the rain evaporation rate profiles from dual-wavelength lidar measurements. These observational results are compared with those provided by a model analytical solution. We made use of measurements from the multi-wavelength Raman ... More
Presented by Dr. Simone LOLLI on 27 Jun 2017 at 12:00
Type: Poster Session: Posters: Lidar applications in atmospheric dynamics and surface exchanges: boundary layer, winds and turbulence
Track: Lidar applications in atmospheric dynamics and surface exchanges: boundary layer, winds and turbulence Board #: 061
This study aims to compare the planetary boundary layer height (PBLH) values estimated by radiosonde data through the bulk Richardson number (BRN) method and by Doppler lidar measurements through the Carrier to Noise Ratio (CNR) method, which corresponds to the maximum of the variance of CNR profile. The measurement campaign was carried during the summer of 2015/2016 in the city of São Paulo. Des ... More
Presented by Mr. Gregori ARRUDA MOREIRA, Dr. Eduardo LANDULFO on 27 Jun 2017 at 17:30
Type: Poster Session: Posters: Synergy of lidars and other sensors
Track: Synergy of lidars and other sensors Board #: 081
In this study, investigations have been conducted into approaches to correlate MODIS AOD values with surface-level PM2.5 observations at Gosan, Korea. Since the AERONET data has significant number of observations with high AOT values paired to low surface-level PM2.5 values, which were believed to be the effect of thin cloud or Asian dust. Stronger correlations were obtained by screened aerosol pr ... More
Presented by Dr. Kwanchul KIM on 27 Jun 2017 at 17:30
Type: Poster Session: Posters: Lidar applications in atmospheric dynamics and surface exchanges: boundary layer, winds and turbulence
Track: Lidar applications in atmospheric dynamics and surface exchanges: boundary layer, winds and turbulence Board #: 061
Recent progress in observations of wind fields by scanning aerosol lidar and motion estimation algorithms elevates interest in accuracy, precision and resolution. Toward this, we are using large eddy simulations to advect a passive tracer in the model domain which mimics atmospheric aerosol. A wavelet-based optical flow algorithm (*Typhoon*) is applied to the simulations, deriving dense motion ve ... More
Presented by Mr. Kyle ROCHA-BROWNELL on 27 Jun 2017 at 17:30
Type: Poster Session: Posters: Lidar applications in atmospheric dynamics and surface exchanges: boundary layer, winds and turbulence
Track: Lidar applications in atmospheric dynamics and surface exchanges: boundary layer, winds and turbulence Board #: 061
Data obtained with a lidar station located in La Paz- Bolivia (16.5ºS, 68.1ºW, 3420masl) were used to study a complex Atmospheric Boundary Layer (ABL). The city, situated inside a canyon, surrounded by the Altiplano plateau and mountains in the Andean Region, gives a perfect scenario for the formation of multiple aerosol layers within and above the ABL. This study shows an evaluation of the ABL ... More
Presented by Mrs. Maria Fernanda SANCHEZ BARRERO on 27 Jun 2017 at 17:30
Type: Poster Session: Posters: Middle and upper atmospheric lidar
Track: Middle and upper atmospheric lidar Board #: 031
A unique Rayleigh-Mie Doppler lidar capable of wind measurements in the 5-50 km altitude range is operated routinely at La Reunion island (21° S) since 2015. We evaluate instrument’s capacities in capturing fine structures in stratospheric wind profiles and their temporal and spatial variability through comparison with collocated radiosoundings and ECMWF analysis. Perturbations in the wind velo ... More
Presented by Dr. Sergey KHAYKIN on 26 Jun 2017 at 17:30
Type: Poster Session: Posters: Lidars applications in atmospheric structure and composition: aerosols, clouds, trace gases
Track: Lidars applications in atmospheric structure and composition: aerosols, clouds, trace gases Board #: 051
The extinction profiles at Finokalia, Crete are determined by the elastic/polarization channels of a PollyXT system. The method makes use of the particle backscatter profiles at 532 nm and the vertically resolved linear particle depolarization ratio measurements at the same wavelength. Linear particle depolarization ratio and lidar ratio values of pure aerosol types are taken rom literature. The t ... More
Presented by Dr. ELENI GIANNAKAKI on 29 Jun 2017 at 17:30
Type: Poster Session: Posters: Lidars applications in atmospheric structure and composition: aerosols, clouds, trace gases
Track: Lidars applications in atmospheric structure and composition: aerosols, clouds, trace gases Board #: 051
NASA Langley Research Center (LaRC) developed a double pulsed, high energy 2-micron Integrated Path Differential Absorption (IPDA) lidar instrument to measure atmospheric CO2 column density. The airborne IPDA lidar made measurements at different ground target conditions such as vegetation, soil, ocean surface, snow and sand, and different cloud conditions. The IPDA lidar measurement is determined ... More
Presented by Jirong YU on 29 Jun 2017 at 17:30
Type: Oral Session: Lidar applications in atmospheric structure and composition: aerosols, clouds, trace gases
Track: Lidars applications in atmospheric structure and composition: aerosols, clouds, trace gases
RAMSES of the Lindenberg Meteorological Observatory, Germany, is the first multi-purpose lidar to routinely measure the fluorescence spectra of atmospheric aerosols. Combined with the other measurement parameters (cloud water content and optical properties, moisture and temperature), this capability allows one to study the co-existence of clouds and fluorescing aerosols for the first time. The flu ... More
Presented by Dr. Jens REICHARDT on 29 Jun 2017 at 10:15
Type: Poster Session: Posters: Lidars applications in atmospheric structure and composition: aerosols, clouds, trace gases
Track: Lidars applications in atmospheric structure and composition: aerosols, clouds, trace gases Board #: 051
The Raman lidar technique as currently applied for the retrieval of WV mixing ratio profiles allows, in theory, to estimate HDO/H2O atmospheric profiles. The objective of this study has been to develop a lidar simulator and to study the feasibility of the ground-based Raman HDO measurement. Thus, the characteristics of a realistic lidar system for the estimation of HDO/H2O atmospheric profiles ha ... More
Presented by Dr. Davide DIONISI, Dr. GianLuigi LIBERTI on 29 Jun 2017 at 17:30
Type: Poster Session: Posters: Commercial lidar systems, ceilometers and critical components
Track: Commercial lidar systems, ceilometers and critical components Board #: 111
Taking into account the context of volcanic ash observation, an expert group has studied what is feasible to assess in order to give reliable Lidar information to aviation concerning ash detection. Lidar parameters to be evaluated and the associated methodology have been reported concerning the aerosol cloud detection, attribution and quantification.
Presented by Prof. Philippe KECKHUT on 26 Jun 2017 at 17:30
Type: Poster Session: Posters: Recent advances in lidar technology
Track: Recent advances in lidar technology Board #: 011
We present the application of the Optimal Estimation Method (OEM) to retrieve atmospheric temperatures from Pure Rotational Raman (PRR) backscatter lidar measurements.The OEM is an inverse method requires specification of a forward model (FM )that can reproduce measurements using the relevant physics and mathematical description of the instrument. A FM is developed to retrieve temperature and test ... More
Presented by Ms. Shayamila MAHAGAMMULLA GAMAGE on 26 Jun 2017 at 17:30
Type: Poster Session: Posters: Lidars applications in atmospheric structure and composition: aerosols, clouds, trace gases
Track: Lidars applications in atmospheric structure and composition: aerosols, clouds, trace gases Board #: 051
Geometrical and optical characteristics of cirrus clouds using Raman lidar PollyXT measurements at different locations are presented. The PollyXT has been participated in two long-term experimental campaigns, one close to New Delhi in India and one at Elandsfontein in South Africa, providing continuous measurements and covering a wide range of cloud types. The first results of cirrus cloud propert ... More
Presented by Ms. Kalliopi Artemis VOUDOURI on 29 Jun 2017 at 17:30
Type: Poster Session: Posters: Lidars applications in atmospheric structure and composition: aerosols, clouds, trace gases
Track: Lidars applications in atmospheric structure and composition: aerosols, clouds, trace gases Board #: 051
In this paper, we present experimental result of Excitation (300-540 nm)-Emission (380-800 nm)-Matrix and fluorescence quantum efficiency of powdered materials which are aerosol candidates. Database categorized the materials as plant-originated ones, animal originated ones, artificial ones and others. The database could offer essential information for designing our laser-induced fluorescence spect ... More
Presented by Mr. Tomoki KUBOTA on 29 Jun 2017 at 17:30
Type: Oral Session: Lidar applications in atmospheric dynamics and surface exchanges: boundary layer, winds and turbulence
Track: Lidar applications in atmospheric dynamics and surface exchanges: boundary layer, winds and turbulence
Airborne coherent Doppler wind lidar measurements, acquired during the GW-LCYCLE II campaign performed from 12 January to 3 February 2016 in Kiruna, Sweden are used to investigate gravity waves induced by flow across the Scandinavian Alps. Besides vertical and horizontal wind measurements with a horizontal resolution of 0.2 km and 9 km respectively, a novel scan pattern has been performed in order ... More
Presented by Dr. Benjamin WITSCHAS on 27 Jun 2017 at 14:30
Type: Oral Session: Lidar applications in atmospheric structure and composition: aerosols, clouds, trace gases
Track: Lidars applications in atmospheric structure and composition: aerosols, clouds, trace gases
GreenLITE™ is a ground-based laser absorption spectroscopy system capable of measuring and mapping CO2 concentrations over areas up to 25 km2. The system was deployed for COP21 as a demonstration and has now completed a year of CO2 measurements over the city of Paris, France. We will discuss lessons learned and relevant data from the year-long deployment. Recently, the system has demonstrated ... More
Presented by Dr. Jeremy DOBLER on 28 Jun 2017 at 12:15
Type: Poster Session: Posters: Synergy of lidars and other sensors
Track: Synergy of lidars and other sensors Board #: 081
This paper presents the results from a coordinated approach for atmospheric investigation, exploring synergies between different techniques. A wide range of instruments have been used during an intensive measurement period both from ground ( lidar, sunphotometer, aethalometer and Aerosol Chemical Speciation Monitor) and airborne (aerodynamic particle sizer, the Picarro gas analyzer and the NO2 CAP ... More
Presented by Dr. Anca NEMUC on 27 Jun 2017 at 17:30
Type: Poster Session: Posters: Large-scale campaigns
Track: Large-scale campaigns Board #: 101
This presentation contains the results of the 10-year research of Belarusian Antarctic expeditions. The set of instruments consists of a lidar, an albedometer, and a scanning sky radiometer CIMEL. Besides, the data from satellite radiometer MODIS were used to characterize the snow cover. The works focus on the study of aerosol, cloud and snow characteristics in the Antarctic, and their links with ... More
Presented by Dr. Aleksey MALINKA on 29 Jun 2017 at 17:30
Type: Poster Session: Posters: Recent advances in lidar technology
Track: Recent advances in lidar technology Board #: 011
We describe an improved University of Wisconsin-Madison High Spectral Resolution Lidar and the modifications done on the HSRL since last report. The instruments had undergone multiple modifications improving the performance and adding new measurement capabilities such as atmospheric temperature profile and extinction cross section measurements. The latest version of the instrument is capable of do ... More
Presented by Mr. Ilya RAZENKOV, Edwin ELORANTA on 26 Jun 2017 at 17:30
Type: Poster Session: Posters: Recent advances in lidar technology
Track: Recent advances in lidar technology Board #: 011
In theory, the HSRL method should expand the domain of validity of the atmospheric molecular density and temperature profiles of the Rayleigh LIDAR. This, in the UTLS under 30 km with the accuracy of 1 K, while suppressing the particulate contribution. We tested a Spherical Fabry-Perot which achieves these performances while keeping a big flexibility in optical alignment. Performances and limitati ... More
Presented by Mr. Yann CARATY on 26 Jun 2017 at 17:30
Type: Poster Session: Posters: Spaceborne-Airborne lidar missions
Track: Spaceborne-Airborne lidar missions Board #: 021
We present the measurement principle and design of a Quad Mach Zehnder (QMZ) interferometer as HSRL technique, allowing simultaneous measurements of particle backscattering and wind velocity. QMZ can be used with multimodal laser and do not require any frequency stabilization, that is interesting for space applications such the MESCAL project proposal (NASA/CNES) that could take over from the curr ... More
Presented by Mr. Jean-François MARISCAL on 26 Jun 2017 at 17:30
Type: Oral Session: Recent advances in lidar technology
Track: Recent advances in lidar technology
First water vapor DIAL measurements carried out with the new high-power Ti:sapphire laser are presented. This pulsed laser system is pumped by a Nd:YAG MOPA and delivers an average output power at 818 nm of up to 10 W (33 mJ at 300 Hz repetition rate) in single-mode and single-frequency operation. A development milestone of this injection-seeded and actively frequency-stabilized system has thus be ... More
Presented by Simon METZENDORF on 26 Jun 2017 at 14:45
Type: Poster Session: Posters: Recent advances in lidar technology
Track: Recent advances in lidar technology Board #: 011
The optimal estimation method (OEM) has a long history of use in passive remote sensing, but has only recently been applied to active instruments like lidar. OEMs advantage over traditional techniques includes obtaining a full systematic and random uncertainty budget plus the ability to work with the raw measurement without first applying instrument corrections. We will show you how to use the OEM ... More
Presented by Prof. Robert SICA on 26 Jun 2017 at 17:30
Type: Poster Session: Posters: Recent advances in lidar technology
Track: Recent advances in lidar technology Board #: 011
When change over time of hydrogen(H2) gas concentration is in a certain point is measured, non-contact measurement technology with high temporal and spatial resolution is necessary. In this study, H2 concentration in the small area of <1cm2 under the gas flow was measured by using Raman lidar. Raman scattering light at the measurement point of 750mm ahead was focused by a Fresnel lens. As a resu ... More
Presented by Mrs. Sachiyo SUGIMOTO on 26 Jun 2017 at 17:30
Type: Poster Session: Posters: Lidar applications in atmospheric dynamics and surface exchanges: boundary layer, winds and turbulence
Track: Lidar applications in atmospheric dynamics and surface exchanges: boundary layer, winds and turbulence Board #: 061
The extreme event of biomass burning from Alaskan tundra fires, occurred on 10-14 July 2015 over Spitsbergen. At Ny-Alesund, scattering/absorbing coefficients and AODs exceeded mean summer values >10 times. For this event, extinction profiles of Koldewey Aerosol Raman Lidar were used in the MODTRAN model to estimate the heating rate profiles. Those, were used then for the EULAG simulations and res ... More
Presented by Ms. Justyna LISOK on 27 Jun 2017 at 17:30
Type: Poster Session: Posters: Lidars applications in atmospheric structure and composition: aerosols, clouds, trace gases
Track: Lidars applications in atmospheric structure and composition: aerosols, clouds, trace gases Board #: 051
The aims of the study is to identify the paths of the long-range transported aerosols over Austria and their potential origin, and to estimate their properties, using lidar measurements from EARLINET stations closest to Austria from Germany and Romania and aerosol transport models. As of now, there is no lidar station in Austria. The study is part of a project to estimate the usefulness of a lidar ... More
Presented by Dr. Camelia TALIANU on 29 Jun 2017 at 17:30
Type: Oral Session: Recent advances in lidar technology
Track: Recent advances in lidar technology
We have developed an aquatic inelastic hyperspectral lidar with unrestricted focal-depth and enough sensitivity and spatio-temporal resolution to detect and resolve position and behavior of individual submillimeter aquatic organisms. We demonstrate ranging with monitoring of elastic echoes, water Raman signals and fluorescence from chlorophyll-bearing phytoplankton and dye tagged organisms. The s ... More
Presented by Dr. Guangyu ZHAO on 26 Jun 2017 at 15:15
Type: Oral Session: Lidar applications in ecosystems research
Track: Lidar applications in ecosystems research
A joint Chinese-Swedish field campaign of Scheimpflug continuous-wave lidar monitoring of flying pest insects was pursued in very hot July weather conditions in rice fields close to Guangzhou, China. The occurrence of insects, birds and bats with 200 hours of round-the-clock polarization-sensitive recordings was studied. Wingbeat frequency recordings and depolarization properties were used for spe ... More
Presented by Prof. Sune SVANBERG on 27 Jun 2017 at 17:15
Type: Poster Session: Posters: Lidar applications in atmospheric dynamics and surface exchanges: boundary layer, winds and turbulence
Track: Lidar applications in atmospheric dynamics and surface exchanges: boundary layer, winds and turbulence Board #: 061
Two scanning, pulsed Doppler lidars were deployed as part of the Department of Energy funded second Wind Forecast Improvement Project (WFIP2), an 18-month field campaign in the Columbia River Gorge starting October 2015. During this project a large array of sensors was deployed in an effort to improve wind forecasts for the wind energy sector. Here lidar measurement uncertainties are quantified an ... More
Presented by Aditya CHOUKULKAR on 27 Jun 2017 at 17:30
Type: Poster Session: Posters: Spaceborne-Airborne lidar missions
Track: Spaceborne-Airborne lidar missions Board #: 021
The NASA-CNES CALIPSO mission released Version 4.1 (V4.1) of their lidar level 2 (LL2) data products in November 2016. This new release from uses significantly improved retrieval algorithms to provide increased accuracy and substantially reduced uncertainties in the derived parameters. Here we present a comprehensive overview of the V4.1 LL2 data products, and show examples illustrating the impr ... More
Presented by Mark VAUGHAN, Dr. Ali OMAR on 26 Jun 2017 at 17:30
Type: Poster Session: Posters: Lidars applications in atmospheric structure and composition: aerosols, clouds, trace gases
Track: Lidars applications in atmospheric structure and composition: aerosols, clouds, trace gases Board #: 051
The Purple Crow Lidar is a large aperture lidar, capable of retrieving water vapor into the stratosphere. A comparison with the ALVICE lidar in 2012 showed water vapor measurements were consistently larger than those of ALVICE in the lower stratosphere, prompting an investigation of the system. Processing approaches and additional instrumental corrections are considered. We also use an optimal est ... More
Presented by Mr. Jeffrey VANKERKHOVE on 29 Jun 2017 at 17:30
Type: Poster Session: Posters: Lidars applications in atmospheric structure and composition: aerosols, clouds, trace gases
Track: Lidar applications in atmospheric dynamics and surface exchanges: boundary layer, winds and turbulence Board #: 051
The scattering properties of aerosol are known predominated by its hygroscopicity which might cause problem on PBLH determination. In this study, in-situ measurements were used to simulate two-wavelength lidar backscatter profiles basing on Köhler theory and Mie theory. The results indicate both lidar ratio and attenuated color ratio would increase as RH increasing and start to decrease when aero ... More
Presented by Dr. Wei-Nai CHEN on 29 Jun 2017 at 17:30
Type: Poster Session: Posters: Lidar applications in atmospheric dynamics and surface exchanges: boundary layer, winds and turbulence
Track: Lidar applications in atmospheric dynamics and surface exchanges: boundary layer, winds and turbulence Board #: 061
Feasibilities of determination of the wind turbulence parameters from data measured by the Stream Line coherent Doppler lidar under different atmospheric conditions have been studied experimentally. It has been found that the spatial structure of the turbulence is described good by the von Karman model in the layer of intensive mixing. From the lidar measurements at night under stable conditions t ... More
Presented by Dr. Igor SMALIKHO, Prof. Viktor BANAKH on 27 Jun 2017 at 17:30
Type: Oral Session: Lidar networks
Track: Lidar networks
LALINET is expanding regionally to guarantee spatial coverage over South and Central Americas. One of the network goals is to obtain a set of regional representative aerosol optical properties such as backscatter, extinction and lidar ratio. Given the North-South extension and influence of distinct airmass circulation patterns it is paramount to distinguish these optical parameters in order to ga ... More
Presented by Dr. Eduardo LANDULFO, Dr. Fabio LOPES on 30 Jun 2017 at 15:00
Type: Poster Session: Posters: Lidars applications in atmospheric structure and composition: aerosols, clouds, trace gases
Track: Lidars applications in atmospheric structure and composition: aerosols, clouds, trace gases Board #: 051
The analysis of aerosol backscattering coefficients data and the relevance of using Light Detection and Ranging (LIDAR) in Atmospheric Sciences are described. The calculation of aerosol backscattering coefficient profiles from the Howard University Raman LIDAR (HURL) data and the comparison with the CL51 Vaisala Ceilometer at the Howard University Beltsville Campus, MD, are shown. In addition the ... More
Presented by Dr. Richard MEDINA on 29 Jun 2017 at 17:30
Type: Oral Session: Lidar applications in atmospheric structure and composition: aerosols, clouds, trace gases
Track: Lidars applications in atmospheric structure and composition: aerosols, clouds, trace gases
The aerosol layers of different origin, suspended in the atmosphere over Warsaw on 9-11 August 2015 were measured with PollyXT-UW. We discuss the lidar obtained properties of biomass burning particles from wild fires in Ukraine; weak layer of depolarizing particles transported form Africa, and the air-mass that few days earlier circulated over Western Carpathians in Slovakia, as well as other laye ... More
Presented by Mrs. Lucja JANICKA on 29 Jun 2017 at 09:30
Type: Oral Session: Middle and upper atmospheric lidar
Track: Middle and upper atmospheric lidar
One of the important applications of lidar techniques is the study of thermal regime and aerosol content of the stratosphere. Such investigations in monitoring mode were started at the Institute of atmospheric optics since 1994 and are continued to date. The main attention is paid for the study of the unexpected disturbances caused by winter stratospheric warming. In this paper we present the resu ... More
Presented by Prof. Gennady MATVIENKO on 29 Jun 2017 at 16:00
Type: Poster Session: Posters: Lidars applications in atmospheric structure and composition: aerosols, clouds, trace gases
Track: Lidars applications in atmospheric structure and composition: aerosols, clouds, trace gases Board #: 051
Low altitude sub-visible clouds have been proven to strongly influence the earth’s radiation budget. A cloud with an optical depth of 0.1 has a radiative effect of 10 W/m2. The presented study proposes two simple methods for cloud optical depth retrieval of low altitude sub-visible clouds by means of a Mini Micro Pulse Lidar System operating at 532 nm. The methods, which result in 90% of the err ... More
Presented by Mr. Nigel FRANKLYN on 29 Jun 2017 at 17:30
Type: Oral Session: Recent advances in lidar technology
Track: Recent advances in lidar technology
Experimental data proving the possibility of lidar measurement of the refractive turbulence strength based on the effect of backscatter amplification (BSA) are reported. It is shown for the first time that the values of the amplification factor correlate with the variance of random jitter of optical image of an incoherent light source depending on the value of the structure constant of the air ref ... More
Presented by Dr. Igor RAZENKOV on 26 Jun 2017 at 16:15
Type: Poster Session: Posters: Lidar applications in ecosystems research
Track: Lidar applications in ecosystems research Board #: 071
This paper presents a new envisaged application of atmospheric LIDAR systems in correlation with other remote sensing and in-situ monitoring instruments. The aim is to provide experts in the field of natural and technological risk assessment information about the presence and type of potentially hazardous particles in the troposphere. Based on this data a preliminary hazard analysis is developed. ... More
Presented by Dr. Horatiu STEFANIE on 27 Jun 2017 at 17:30
Type: Poster Session: Posters: Synergy of lidars and other sensors
Track: Synergy of lidars and other sensors Board #: 081
Non-diffracting beam (NDB) was widely used in LIDAR transmitter because of its high efficiency and resolution. We aim to generate NDB in random media such as haze, cloud and human body. Lab-based experiment was conducted with diluted processed milk(fat:1.8%,1.1μmφ). Narrow angle detector of 5.5mrad detected forward scattering waveform. We could obtain central peak of NBS in random media of <10 ... More
Presented by Mr. ALIFU XIAFUKAITI on 27 Jun 2017 at 17:30
Type: Poster Session: Posters: Lidars applications in atmospheric structure and composition: aerosols, clouds, trace gases
Track: Lidars applications in atmospheric structure and composition: aerosols, clouds, trace gases Board #: 051
A compact ozone differential absorption lidar (DIAL) was implemented at the Laboratory of Laser Remote Sensing of the National Technical University of Athens (Greece). The DIAL system is based on a Nd:YAG laser emitting at 266 nm. A high-pressure D2-filled Raman cell was used to generate the ON and OFF laser wavelengths (289 nm and 316 nm, respectively). The system was run during daytime and night ... More
Presented by Mr. MICHALIS MYTILINAIOS on 29 Jun 2017 at 17:30
Type: Poster Session: Posters: Recent advances in lidar technology
Track: Recent advances in lidar technology Board #: 011
We report on the design and performance of the laser frequency stabilization unit in CHARM-F, the airborne Integral Path Differential Absorption lidar for simultaneous column measurements of CO2 and CH4. A relative long-term stability down to 10^-10 is measured in the laboratory against a commercial self-referenced frequency comb. Thanks to a new ruggedized version of the comb flying alongside CHA ... More
Presented by Dr. Andreas FIX on 26 Jun 2017 at 17:30
Type: Poster Session: Posters: Lidar applications in weather/meteorology, air quality and climate-global change
Track: Lidar applications in weather/meteorology, air quality and climate-global change Board #: 041
We have installed DIAL system for high-resolution measurements of vertical ozone profiles in the equatorial upper troposphere region over Kototabang. We have observed large ozone enhancement in the upper troposphere, altitude of 13-17km, concurring with a zonal wind oscillation associated with the equatorial Kelvin wave around the tropopause at equatorial region.
Presented by Dr. Yasukuni SHIBATA on 27 Jun 2017 at 17:30
Type: Oral Session: Large scale campaigns
Track: Large-scale campaigns
The Plains Elevated Convection At Night is a large field study that occurred in the summer of 2015 over Kansas, Oklahoma. A suite of lidar-based instrumentation were deployed. We plan to present on data collected, use of ceilometers in detection of undular bores, lidar-MWR-AERI compsrisons and comparisons of ground-based and aircraft instrumentation. We also will report on unique lidar-radar based ... More
Presented by Belay DEMOZ, Mr. Brian CARROLL on 29 Jun 2017 at 15:15
Type: Poster Session: Posters: Recent advances in lidar technology
Track: Recent advances in lidar technology Board #: 011
The lidar development at the University of Hertfordshire explores the feasibility of using Raman backscattering for chemical aerosol profiling. We will introduce the new facility and give an overview of the planned laboratory experiments. A high-power Nd:YAG/OPO setup is used to excite Raman backscattering at a wide range of wavelengths. The receiver combines a spectrometer with a 32-channel detec ... More
Presented by Dr. Matthias TESCHE on 26 Jun 2017 at 17:30
Type: Poster Session: Posters: Lidar applications in atmospheric dynamics and surface exchanges: boundary layer, winds and turbulence
Track: Lidar applications in atmospheric dynamics and surface exchanges: boundary layer, winds and turbulence Board #: 061
A field campaign for the investigation of wind and optical turbulence profiles was conducted in the northern Germany. The campaign was an effort to compare the performance of the LIDAR, SODAR-RASS and ultrasonic anemometers for measurements of atmospheric parameters. Soreq's LIDAR is a fiber laser based system demonstrator for the vertical profiling of the wind and turbulence. It provides measu ... More
Presented by Dr. Shlomo FASTIG on 27 Jun 2017 at 17:30
Type: Oral Session: Lidar applications in atmospheric structure and composition: aerosols, clouds, trace gases
Track: Lidars applications in atmospheric structure and composition: aerosols, clouds, trace gases
By means of available ice nuclei particle (INP) parameterization schemes we compute profiles of dust INP number concentration utilizing Polly-XT and CALIPSO lidar observations during the INUIT-BACCHUS-ACTRIS 2016 campaign. The polarization-lidar photometer networking (POLIPHON) method is used to separate dust and non-dust aerosol backscatter, extinction, volume and mass concentration. The INP fina ... More
Presented by Ms. Eleni MARINOU on 28 Jun 2017 at 10:15
Type: Poster Session: Posters: Lidars applications in atmospheric structure and composition: aerosols, clouds, trace gases
Track: Lidars applications in atmospheric structure and composition: aerosols, clouds, trace gases Board #: 051
The main aim of the research is to develop the technique for laser remote ozone sensing in the upper troposphere – lower stratosphere by differential absorption method for temperature and aerosol correction and analysis of measurement results. The report introduces the technique of recovering profiles of ozone vertical distribution considering temperature and aerosol correction in atmosphere lid ... More
Presented by Prof. Romanovskii OLEG on 29 Jun 2017 at 17:30
Type: Oral Session: Lidar applications in atmospheric structure and composition: aerosols, clouds, trace gases
Track: Lidars applications in atmospheric structure and composition: aerosols, clouds, trace gases
A lidar network captured evolution of a dust layer in the Gobi Desert on 22-23 May 2013. The lidar network consists of a ceilometer and two AD-Net lidars in Mongolia. The dust layer was generated by a strong wind due to a cold front and elevated over the surface of the cold front by an updraft of the warm air in the cold-front system. It was evolving from the atmospheric boundary layer to the free ... More
Presented by Mr. Kei KAWAI on 29 Jun 2017 at 09:15
Type: Poster Session: Posters: Lidars applications in atmospheric structure and composition: aerosols, clouds, trace gases
Track: Lidars applications in atmospheric structure and composition: aerosols, clouds, trace gases Board #: 051
Two cases from SLOPE campaign at Granada are analyzed in terms of microphysical properties using a novel software developed at Potsdam University. Multiwavelength Raman lidar measurements of particle extinction and backscatter coefficients as well as linear particle depolarization ratios are used as input for the software. The result of the retrieval is a 2-dimensional particle volume distribution ... More
Presented by Mr. Pablo ORTIZ AMEZCUA on 29 Jun 2017 at 17:30
Type: Oral Session: Lidar applications in atmospheric structure and composition: aerosols, clouds, trace gases
Track: Lidars applications in atmospheric structure and composition: aerosols, clouds, trace gases
The ability of Raman lidar to profile the clouds at two wavelengths was used for analysis of possible contribution of corner reflection (CR) effect to the total backscattering of ice clouds. The backscattering coefficient in the case of CR should be spectrally dependent due to diffraction in backward direction. In some measurement sessions we observed the positive values of backscattering Angstro ... More
Presented by Dr. Igor VESELOVSKII on 28 Jun 2017 at 09:45
Type: Oral Session: Lidar applications in atmospheric dynamics and surface exchanges: boundary layer, winds and turbulence
Track: Lidar applications in atmospheric dynamics and surface exchanges: boundary layer, winds and turbulence
The results of lidar study of wind turbulence, low level jet streams, and internal atmospheric waves in the stable boundary layer of atmosphere on the coast of Lake Baikal are presented. Few events of the internal atmospheric waves (AIWs) were registered during the experimental campaign. All the registered AIWs were observed in presence of low level jet streams. Two dimensional time - height patt ... More
Presented by Dr. Viktor BANAKH on 27 Jun 2017 at 14:45
Type: Poster Session: Posters: Recent advances in lidar technology
Track: Recent advances in lidar technology Board #: 011
A new Lidar combining Raman spectroscopy and linear polarization analysis is presented. This new instrument identifies the fraction of ice, liquid and water vapor in low level polar tropospheric cloud. The instrument provides the polarimetric S and P state of the backscattering Lidar signal at 532 nm. An overview of the research applications is given followed by a theoretical estimation of the L ... More
Presented by Prof. Javier FOCHESATTO, Dr. Pablo RISTORI on 26 Jun 2017 at 17:30
Type: Oral Session: Synergy of lidars and other sensors
Track: Synergy of lidars and other sensors
Lidar&Radiometer Inversion Code (LIRIC) was modified for data processing of coordinated AERONET sun-radiometer and CALIPSO lidar observations. Improved Lidar&Radiometer Sounding (LRS) technique was used to obtain the “snapshot” of aerosol concentration profiles over the East Europe region during dust event, 07-08.04.2016 from EARLINET, AERONET and CALIPSO data. Aerosol concentration profiles ... More
Presented by Dr. Anatoli CHAIKOVSKY on 30 Jun 2017 at 11:30
Type: Oral Session: Lidar applications in weather/meteorology, air quality and climate-global change
Track: Lidar applications in weather/meteorology, air quality and climate-global change
Future satellite missions, such as TEMPO, will provide improved data products, including lower-tropospheric ozone column concentration. This kind of data may allow monitoring of surface air quality from satellites, provided the relationship between column and surface ozone concentrations is known. To characterize this relationship, we have used NOAA TOPAZ ozone lidar observations from several rece ... More
Presented by Christoph SENFF on 27 Jun 2017 at 09:45
Type: Poster Session: Posters: Lidars applications in atmospheric structure and composition: aerosols, clouds, trace gases
Track: Lidars applications in atmospheric structure and composition: aerosols, clouds, trace gases Board #: 051
In this study we investigate the potential of 15 years of lidar measurements over the lidar station of Thessaloniki to compile a climatology of the aerosol properties for the period 2000-2016. This is examined on a monthly, seasonal and annual basis. Both the aerosol profile structure and the columnar properties are examined. The results are compared for consistency against co-located sunphotomete ... More
Presented by Mr. NIKOLAOS SIOMOS on 29 Jun 2017 at 17:30
Type: Poster Session: Posters: Recent advances in lidar technology
Track: Recent advances in lidar technology Board #: 011
We have developed a 1.6 μm CO2 DIAL system for simultaneous measurements of the CO2 concentration and temperature profiles in the lower-atmosphere. Laser beams of three wavelengths around a CO2 absorption spectrum is transmitted alternately to the atmosphere. The value of the retrieved CO2 concentration will be improved by processing the iteration assignment of CO2 concentration and temperature, ... More
Presented by Dr. Yasukuni SHIBATA on 26 Jun 2017 at 17:30
Type: Oral Session: Spaceborne-Airborne lidar missions
Track: Spaceborne-Airborne lidar missions
MERLIN is a joint French-German cooperation of CNES and DLR Space Administration on space-borne global measurements of atmospheric methane column (CH4) with an accuracy better than 2%, using an Integrated Path Differential Absorption (IPDA) LIDAR instrument. Measurements will be possible also under cloudy and variable sun illumination conditions. The project has entered the Phase C. The critical d ... More
Presented by Dr. Matthias ALPERS on 26 Jun 2017 at 11:15
Type: Poster Session: Posters: Lidars applications in atmospheric structure and composition: aerosols, clouds, trace gases
Track: Lidars applications in atmospheric structure and composition: aerosols, clouds, trace gases Board #: 051
The data-processing technique of the signals recorded by zenith lidar, which operates in a smoke-polluted atmosphere, is discussed. The technique is based on transformations of the backscatter signal of the lidar and the determination of the spatial location and the temporal changes of the data-points clusters. The technique allows reliable determination of the heights of dispersed smoke layering ... More
Presented by Dr. Vladimir KOVALEV on 29 Jun 2017 at 17:30
Type: Poster Session: Posters: Lidars applications in atmospheric structure and composition: aerosols, clouds, trace gases
Track: Lidars applications in atmospheric structure and composition: aerosols, clouds, trace gases Board #: 051
We evaluate the mass concentration profiles of RAMS-ICLAMS model using lidar profiles at Finokalia, Crete. The vertically resolved separation of different aerosol types, dust and marine particles, are estimated using lidar profiles. The separation of the profiles is perfomed based on linear particle depolarization ratio and backscatter profiles. The combination of lidar derived extinction coef ... More
Presented by Ms. Stella APOSTOLOPOULOU, Dr. Elina GIANNAKAKI on 29 Jun 2017 at 17:30
Type: Poster Session: Posters: Recent advances in lidar technology
Track: Recent advances in lidar technology Board #: 011
A multi-static lidar was developed to measure particle size of water mist generated by rocket launch. Micrometer-sized mist is thought to protect rocket from acoustic noise, but its contribution is unknown since in-situ droplet size has not been measured. The lidar consists of a 2 wavelength laser and detectors at 180/178/177 deg. scattering angles. The size parameter of mist is determined from ba ... More
Presented by Mr. Taisuke YOSHITOMI on 26 Jun 2017 at 17:30
Type: Poster Session: Posters: Lidar applications in atmospheric dynamics and surface exchanges: boundary layer, winds and turbulence
Track: Lidar applications in atmospheric dynamics and surface exchanges: boundary layer, winds and turbulence Board #: 061
The Plains Elevated Convection at Night (PECAN) field campaign spanned the period from 1 June 2015 to 15 July 2015. The main research objectives of this campaign included studying convective initiation, the structure of mesoscale convective systems, the evolution of bores, and the structure of the nocturnal low level jet (LLJ) in relation to the nocturnal precipitation events over the Great Plains ... More
Presented by Kristen POZSONYI on 27 Jun 2017 at 17:30
Type: Poster Session: Posters: Lidar applications in weather/meteorology, air quality and climate-global change
Track: Lidar applications in weather/meteorology, air quality and climate-global change Board #: 041
To improve the lead time and accuracy of the prediction of the heavy rainfall, it is useful to measure the water vapor distribution upwind cumulus convection beforehand and assimilate the data into the model. For that purpose, we have developed a compact diode-laser-based DIAL that can measure the vertical distribution of water vapor in the lower troposphere. We show the results of the measurement ... More
Presented by Makoto ABO on 27 Jun 2017 at 17:30
Type: Oral Session: Recent advances in lidar technology
Track: Recent advances in lidar technology
We replaced a 1064-nm interference filter of a Polly-XT system by a 1058-nm filter to observe rotational Raman backscattering. Polly-XT is compact Raman lidar with a Nd:YAG laser (20 Hz, 200 mJ at 1064 nm) and a 30-cm telescope mirror which applies photomultipliers in photon-counting mode. We present the first measured signals at 1058 nm and the derived extiction profile from measurements in Leipz ... More
Presented by Dr. Ronny ENGELMANN on 26 Jun 2017 at 16:00
Session: Opening ceremony
Presented by Prof. Alexandros PAPAYANNIS on 26 Jun 2017 at 08:51
Session: Opening ceremony
Presented by Dr. Viorel VULTURESCU on 26 Jun 2017 at 08:37
Session: Opening ceremony
Presented by Mr. Ronald E. HAWKINS, JR. on 26 Jun 2017 at 08:44
Type: Oral Session: Lidar applications in atmospheric structure and composition: aerosols, clouds, trace gases
Track: Lidars applications in atmospheric structure and composition: aerosols, clouds, trace gases
The National Center for Atmospheric Research (NCAR) and Montana State Univeristy (MSU) are developing a test network of five micro-pulse differential absorption lidars to continuously measure high-vertical-resolution water vapor in the lower atmosphere. The instruments are accurate, yet low-cost, operate unattended, and eye-safe – key features to enable a larger network needed to characterize at ... More
Presented by Scott SPULER on 29 Jun 2017 at 11:45
Type: Poster Session: Posters: Lidar applications in weather/meteorology, air quality and climate-global change
Track: Lidar applications in weather/meteorology, air quality and climate-global change Board #: 041
Mineral dust needs to be characterized comprehensively since it contributes to the climate change in Tajikistan / Central Asia. Lidar results from the measurements of mineral dust during CADEX are compared with results of sun photometer measurements, satellite-based measurements, and chemical analysis of ground samples. Although the dust is often advected from far-range sources, it impacts on the ... More
Presented by Dr. Dietrich ALTHAUSEN on 27 Jun 2017 at 17:30
Type: Oral Session: Lidar applications in weather/meteorology, air quality and climate-global change
Track: Lidar applications in weather/meteorology, air quality and climate-global change
Tajikistan is often affected by atmospheric mineral dust. The direct and indirect climatic effects of that dust play a role in the climate change in Central Asia. CADEX provides first lidar measurements in Tajikistan. The autonomous multiwavelength polarization Raman lidar PollyXT ran for 1.5 years (2015/16). In spring, lofted layers of long-range transported dust and in summer/autumn, lower layin ... More
Presented by Mr. Julian HOFER on 27 Jun 2017 at 11:30
Type: Poster Session: Posters: Lidar applications in atmospheric dynamics and surface exchanges: boundary layer, winds and turbulence
Track: Lidar applications in atmospheric dynamics and surface exchanges: boundary layer, winds and turbulence Board #: 061
A low-level jet (LLJ) is a prominent wind speed peak in the lower troposphere. Nocturnal LLJs have been shown to transport and mix atmospheric constituents from the residual layer down to the surface, breaching quiescent nocturnal conditions due to high wind shear. A new fuzzy logic algorithm combining turbulence and aerosol information from Doppler lidar scans can resolve the strength and depth o ... More
Presented by Mr. Brian CARROLL on 27 Jun 2017 at 17:30
Type: Oral Session: Lidar applications in atmospheric structure and composition: aerosols, clouds, trace gases
Track: Lidars applications in atmospheric structure and composition: aerosols, clouds, trace gases
Environment and Climate Change Canada has recently developed a fully autonomous, mobile LIDAR system dubbed AMOLITE (Autonomous Mobile Ozone LIDAR Instrument for Tropospheric Experiments) to simultaneously measure the vertical profile of tropospheric ozone, aerosol and water vapor (night time only) from near ground to altitudes reaching ten to fifteen kilometers. This current system uses a dual ... More
Presented by Dr. Kevin STRAWBRIDGE on 29 Jun 2017 at 12:00
Type: Oral Session: Lidar applications in atmospheric structure and composition: aerosols, clouds, trace gases
Track: Lidars applications in atmospheric structure and composition: aerosols, clouds, trace gases
First simulations with the NMMB/BSC-CTM model of the atmospheric dispersion of pollen particles were performed for a 5-day pollination event. The simulations are compared to vertical profiles measured with a continuous lidar. First results show that the model reproduces well the vertical distribution in shape, but not in intensity, the model generally underestimating. Ongoing model developments in ... More
Presented by Mr. Michaël SICARD on 29 Jun 2017 at 09:45
Type: Poster Session: Posters: Lidar applications in weather/meteorology, air quality and climate-global change
Track: Lidar applications in weather/meteorology, air quality and climate-global change Board #: 041
Mining activities involve a series of operations which can produce significant quantities of fugitive particles with potentially effects on the local environments. In addition to conventional in-situ particles counters, a project has been initiated by the Australian Department of Environment Regulation to monitor the particles in 2D with a scanning Coherent Doppler Lidar. The methdology and the r ... More
Presented by Dr. Philippe ROYER on 27 Jun 2017 at 17:30
Type: Poster Session: Posters: Lidar applications in weather/meteorology, air quality and climate-global change
Track: Lidar applications in weather/meteorology, air quality and climate-global change Board #: 041
Field campaigns with a scanning multiwavelength elastic lidar coupled with a Doppler system to monitor industrial atmospheric aerosol emissions were carried out, with the objective of monitoring aerosol emission sources and plume dispersion. Since the technique provides information on the spatial and temporal distribution of aerosol concentration, the implementation of a systematic monitoring proc ... More
Presented by Ms. Fernanda M MACEDO, Dr. Eduardo LANDULFO on 27 Jun 2017 at 17:30
Type: Oral Session: Synergy of lidars and other sensors
Track: Synergy of lidars and other sensors
Mixed-phase clouds show remarkable persistence in the Arctic even though the liquid phase is unstable at super-cool temperatures, possibly persisting for days to weeks with the right synoptic conditions. While mixed-phase clouds are common, the processes that maintain these clouds remain unclear. Here we will present data taken by polarization lidar and co-located sensors such as radar, microwave ... More
Presented by Mr. Robert STILLWELL on 30 Jun 2017 at 10:00
Type: Poster Session: Posters: Lidars applications in atmospheric structure and composition: aerosols, clouds, trace gases
Track: Lidars applications in atmospheric structure and composition: aerosols, clouds, trace gases Board #: 051
Atmospheric Lidars are used extensively to get aerosol parameters like backscattering coefficient, backscattering ratio etc. National Atmospheric Research Laboratory, Gadanki(13N,79E), India has a powerful lidar which has alt-azimuth capability. Inversion method, is applied to data from observations of lidar system at different azimuth and elevation angles. Data Analysis is described and Observati ... More
Presented by Mr. Lalitkumar PAWAR on 29 Jun 2017 at 17:30
Type: Poster Session: Posters: Lidars applications in atmospheric structure and composition: aerosols, clouds, trace gases
Track: Lidars applications in atmospheric structure and composition: aerosols, clouds, trace gases Board #: 051
We present an overview on the present status of NASA Langley Research Center’s airborne High Spectral Resolution Lidar 2 (HSRL 2) which measures particle backscatter coefficients at three wavelengths (355, 532, 1064 nm), extinction coefficients at 2 wavelengths (355, 532 nm) and the linear particle depolarization ratio at 3 wavelengths (354, 532, and 1064 nm). The instrument has been deployed to ... More
Presented by Prof. DETLEF MUELLER on 29 Jun 2017 at 17:30
Type: Oral Session: Recent advances in lidar technology
Track: Recent advances in lidar technology
Recently, we successfully demonstrated a new compact and robust ozone DIAL lidar for smaller aircraft such as the NASA B200 and the ER-2 high-altitude aircraft. This abstract provides a technical overview of major subsystems of this new instrument, an overview of potential new investigations, and highlight a few examples of ozone and aerosol profiles acquired during flights in January 2016 and Apr ... More
Presented by Dr. Johnathan HAIR on 26 Jun 2017 at 14:30
Type: Poster Session: Posters: Commercial lidar systems, ceilometers and critical components
Track: Commercial lidar systems, ceilometers and critical components Board #: 111
Novel algorithms are presented for implementation into 3D scanning lidars for automatic measurements of the slant-horizontal-RVR visibility for airport tower controllers and from the pilot’s point of view, based on the LADDER technique. Other novel lidar algorithms developed concern the retrieval of the PBL height, and the detection of aerosol layering and meteorological parameters using denoisi ... More
Presented by Mr. Alexandros PANTAZIS, Prof. Alexandros PAPAYANNIS on 26 Jun 2017 at 17:30
Type: Poster Session: Posters: Recent advances in lidar technology
Track: Recent advances in lidar technology Board #: 011
Tropospheric water vapor shows a very high spatio-temporal variability. Thus, for a lidar short integration times are required. The only suitable technique is DIAL (NIR). We present a new concept of transversal pumping a Ti:Sapphire amplifier in order to reduce the thermal loading. This allows for a higher average power and a shorter measurement time due to the enhanced cooling situation. We also ... More
Presented by Dr. Hannes VOGELMANN on 26 Jun 2017 at 17:30
Type: Oral Session: Lidar applications in atmospheric dynamics and surface exchanges: boundary layer, winds and turbulence
Track: Lidar applications in atmospheric dynamics and surface exchanges: boundary layer, winds and turbulence
Feedbacks between the land surface and the atmosphere determine the characteristics of the atmospheric boundary layer and thus, the evolution of clouds and precipitation. In order to understand feedback processes, a new generation of experiments is in preparation. The synergy of observations consists mainly of a 3-D scanning Doppler, temperature, and water-vapor lidar systems measuring surface flu ... More
Presented by Prof. Volker WULFMEYER on 27 Jun 2017 at 14:00
Type: Oral Session: Lidar applications in atmospheric structure and composition: aerosols, clouds, trace gases
Track: Lidars applications in atmospheric structure and composition: aerosols, clouds, trace gases
New methods were developed to retrieve height profiles of particle backscatter, extinction, and mass concentration of fine dust, coarse dust, and the non-dust aerosol component as well as of the number concentration of potential cloud condensation nuclei and ice-nucleating particles from single-wavelength polarization lidar measurements. The required optical-to-microphysical conversion factors ar ... More
Presented by Dr. RODANTHI-ELISAVET MAMOURI on 28 Jun 2017 at 09:00
Type: Poster Session: Posters: Recent advances in lidar technology
Track: Recent advances in lidar technology Board #: 011
This paper will discuss the development and capabilities of an new data system for use in SSEC HSRLs. The data system uses a FPGA development board with stacked IO PCBs. It captures range resolved photon counts for up to 16 detectors and up to 4 different laser shot types. It has pre-trigger range bins for easy use with passively Q-switched lasers, and will ignore any laser shots that are flagge ... More
Presented by Ed ELORANTA on 26 Jun 2017 at 17:30
Type: Poster Session: Posters: Synergy of lidars and other sensors
Track: Synergy of lidars and other sensors Board #: 081
Proposed approach uses GRASP algorithm to retrieve a set of aerosol characteristics, describing both columnar and vertical properties of fine and coarse aerosol modes for consequent moments of time corresponding to different combinations of photometric and Raman lidar measurements. Additional constraints on time variability of aerosol properties are introduced to stabilize the retrieval when photo ... More
Presented by Dr. Anton LOPATIN on 27 Jun 2017 at 17:30
Type: Poster Session: Posters: Lidars applications in atmospheric structure and composition: aerosols, clouds, trace gases
Track: Lidars applications in atmospheric structure and composition: aerosols, clouds, trace gases Board #: 051
In July 2015 an extreme event of forest fires occurred in the European Arctic and was measured by a Raman lidar and a contemporaneous radiosonde. Between 2.1km and 3.4 altitude a close to neutral stratification was found in which the relative humidity rose from below 50% to more than 90%. This allowed analysing the hygroscopic behavior of the BB aerosol in detail. By inspection of color ratio and ... More
Presented by Dr. Christoph RITTER on 29 Jun 2017 at 17:30
Type: Oral Session: Lidar applications in atmospheric structure and composition: aerosols, clouds, trace gases
Track: Lidars applications in atmospheric structure and composition: aerosols, clouds, trace gases
Applicability of a KTA crystal-based laser system with optical parametric oscillators (OPO) generation to lidar sounding of the atmosphere in the spectral range 3–4 µm is studied in this work. A technique developed for lidar sounding of trace atmospheric gases (TAG) is based on differential absorption lidar (DIAL) method and differential optical absorption spectroscopy (DOAS). The DIAL-DOAS tec ... More
Presented by Prof. Romanovskii OLEG on 28 Jun 2017 at 11:45
Type: Poster Session: Posters: Lidars applications in atmospheric structure and composition: aerosols, clouds, trace gases
Track: Lidars applications in atmospheric structure and composition: aerosols, clouds, trace gases Board #: 051
CO2 is the primary greenhouse gas emitted through human activities. For the detailed analysis of forest carbon dynamics and CO2 fluxes of urban area, vertical CO2 concentration profiles with high spatial and temporal resolution in the lower atmosphere have been conducted by a DIAL. We have observed several continuous vertical profiles of CO2 concentrations for nighttime and daytime from 0.25 to 2. ... More
Presented by Prof. Chikao NAGASAWA, Makoto ABO on 29 Jun 2017 at 17:30
Type: Poster Session: Posters: Middle and upper atmospheric lidar
Track: Middle and upper atmospheric lidar Board #: 031
An incoherent Dopper lidar has been developed to measure lower and middle atmospheric winds at Gadanki (13.6ºN, 79.2ºE), India, first of its kind developed in India. The system is in Edge technique and is optimised for molecular returns. This optical fiber coupled lidar system operates in Doppler Beam Swinging mode to determine the Zonal and Meridional winds from radial velocities. Intercomparis ... More
Presented by Dr. Raghunath K on 26 Jun 2017 at 17:30
Type: Poster Session: Posters: Lidars applications in atmospheric structure and composition: aerosols, clouds, trace gases
Track: Lidars applications in atmospheric structure and composition: aerosols, clouds, trace gases Board #: 051
In this study we develop a model for vertical profiles of aerosol in the Saharan Air Layer (SAL) during long-range transport over the Atlantic. We consider a complex aerosol microphysics model and particle settling, as well as two hypotheses about the occurrence of vertical mixing in the SAL over the Atlantic. Comparing the modeled profiles with in-situ sizing data and with linear depolarization r ... More
Presented by Mr. Josef GASTEIGER on 29 Jun 2017 at 17:30
Type: Poster Session: Posters: Lidars applications in atmospheric structure and composition: aerosols, clouds, trace gases
Track: Lidars applications in atmospheric structure and composition: aerosols, clouds, trace gases Board #: 051
The paper presents new high-quality stratospheric aerosol observations spanning 1994-2016 at Haute-Provence observatory (OHP, 44 °N, 6 °E) obtained by two independent lidar systems. Lidar series are analyzed together with global observations by CALIOP and other satellite sounders to characterize the variability and evolution of the mid-latitude stratospheric aerosol over the last two decades. Vo ... More
Presented by Dr. Sergey KHAYKIN on 29 Jun 2017 at 17:30
Type: Poster Session: Posters: Spaceborne-Airborne lidar missions
Track: Spaceborne-Airborne lidar missions Board #: 021
The Met Office plans to use space lidar datasets from CALIPSO, CATS, Aeolus and EarthCARE operationally in near real time (NRT), for the detection of aerosols. The first step is the development of NRT imagery for nowcasting of volcanic events, air quality, and mineral dust episodes. Model verification and possibly assimilation will be explored. Assimilation trials of Aeolus winds are also pl ... More
Presented by Dr. Franco MARENCO on 26 Jun 2017 at 17:30
Type: Oral Session: Synergy of lidars and other sensors
Track: Synergy of lidars and other sensors
Optically thin clouds have a strong radiative effect, and need to be represented accurately in climate models. Cloud optical depth of thin clouds was retrieved using high resolution digital photography, lidar, and a radiative transfer model. The Doppler Lidar was operated at 1.5µm, minimizing Rayleigh scattering return, and emphasizing return from aerosols and clouds. This approach examined cloud ... More
Presented by Dr. Viviana VLADUTESCU on 30 Jun 2017 at 10:15
Type: Poster Session: Posters: Lidar networks
Track: Lidar networks Board #: 091
Long-term sustained heavy Asian Dust below 3 km was measured in the period of April 22-27 by 2-wavelengths depolarization lidar system. As the comparison results of Daejeon station with other stations in the AD-Net, similarly formed Asian dust over 20% depolarization ratio had been measured at Nigata, Toyama, Matsue, Sendai. The route of the dust was examined by HYSPLIT. More than 80 μg / m3 mass ... More
Presented by Prof. Chan Bong PARK on 27 Jun 2017 at 17:30
Type: Oral Session: Lidar applications in weather/meteorology, air quality and climate-global change
Track: Lidar applications in weather/meteorology, air quality and climate-global change
This paper presents the first, to our knowledge, lidar measurement of an anthropic fire. Thick black smoke covered the north area of Paris on April 17th 2015, due to the fire of a textile warehouse. A ground based Raman lidar performed continuous measurements during this event. Extinction coefficient and lidar ratio profiles were derived. A Monte Carlo algorithm was used in parallel to assess the ... More
Presented by Dr. Xiaoxia SHANG, Dr. Julien TOTEMS on 27 Jun 2017 at 10:00
Type: Poster Session: Posters: Lidar applications in atmospheric dynamics and surface exchanges: boundary layer, winds and turbulence
Track: Lidar applications in atmospheric dynamics and surface exchanges: boundary layer, winds and turbulence Board #: 061
The temporal evolution of the Planetary Boundary Layer height over Athens, Greece for a 5-year period (2011-2016) is presented. Using the EOLE Raman lidar system, the range-corrected lidar signals were selected around 12:00 UTC and 00:00 UTC for a total of 332 cases (165 days and 167 nights). The Kalman filter and other techniques were used to determine PBL height. The mean PBL height was found to ... More
Presented by Prof. Alexandros PAPAYANNIS on 27 Jun 2017 at 17:30
Type: Poster Session: Posters: Lidars applications in atmospheric structure and composition: aerosols, clouds, trace gases
Track: Lidars applications in atmospheric structure and composition: aerosols, clouds, trace gases Board #: 051
An Arctic Haze event observed on 6-8 April 2015 using Near Range Raman Lidar receiver and Koldewey Aerosol Raman Lidar during the iAREA field experiment in Ny-Alesund. We focus on tracking alterations of the highest aerosol load observed on the first day, which changed both in particle abundance and altitude on following days. Daytime profiles of optical properties obtained for both lidars and res ... More
Presented by Dr. Iwona S. STACHLEWSKA on 29 Jun 2017 at 17:30
Type: Oral Session: Recent advances in lidar technology
Track: Recent advances in lidar technology
In 2015, the new airborne lidar CHARM-F for the measurement of the greenhouse gases carbon dioxide and methane was set into operation. It is an integrated path differential absorption (IPDA) lidar designed for the use onboard the German research aircraft HALO. Due to its high technological similarity to the MERLIN space lidar, it is also a demonstrator for the space system. Here, we report on CHAR ... More
Presented by Dr. Axel AMEDIEK on 26 Jun 2017 at 16:30
Type: Oral Session: Recent advances in lidar technology
Track: Recent advances in lidar technology
A lidar receiver with a direct detection chain adapted to a HgCdTe APD based detector with electric cooling is associated to a 2.05 µm Ho :YLF pulsed dual wavelength single mode transmitter to provide the first atmospheric lidar measurements using this technology. Experiments confirm the outstanding sensitivity of the detector and its huge potential for DIAL measurements of trace gas (CO2 and H2O ... More
Presented by Dr. Fabien GIBERT on 26 Jun 2017 at 15:00
Type: Poster Session: Posters: Lidar networks
Track: Lidar networks Board #: 091
The number and quality of atmospheric observations used by numerical weather prediction models and forecasters are increasing year after year and yet, improving forecasts remains challenging. Existing networks provide mainly surface measurements but rarely upper air observations with high spatial and temporal resolutions. The study will present the capabilities of coherent Lidars to provide reso ... More
Presented by Dr. Philippe ROYER on 27 Jun 2017 at 17:30
Type: Poster Session: Posters: Spaceborne-Airborne lidar missions
Track: Spaceborne-Airborne lidar missions Board #: 021
Clouds and aerosols in the Earth’s atmosphere are currently being measured by two spaceborne lidars: the polar orbiting Cloud Aerosol Lidar and Infrared Pathfinder Satellite Observations (CALIPSO) mission and the Cloud-Aerosol Transport System (CATS) flying aboard the International Space Station. This work compares the cloud distributions retrieved by the two instruments, with emphasis on poten ... More
Presented by Ms. Sharon RODIER on 26 Jun 2017 at 17:30
Type: Poster Session: Posters: Recent advances in lidar technology
Track: Recent advances in lidar technology Board #: 011
An analytical framework, based on the Müller-Stokes formalism, is presented, which enables us to determine the impact of polarisation effects of the lidar optics on the lidar signals and on the measured atmospheric depolarisation. Furthermore, the equations enable us to investigate the accuracy of the gain ratio calibration of depolarisation channels with different calibration set-ups, to correc ... More
Presented by Dr. Volker FREUDENTHALER on 26 Jun 2017 at 17:30
Type: Poster Session: Posters: Lidars applications in atmospheric structure and composition: aerosols, clouds, trace gases
Track: Lidars applications in atmospheric structure and composition: aerosols, clouds, trace gases Board #: 051
Aerosol plays an important role in global climate and weather changes. Polarization lidar captures parallel and perpendicular signals from atmosphere to research aerosols. The lidar system we used has three emission wavelengths and could obtain the atmospheric aerosol extinction coefficient, backscattering coefficient and depolarization ratio. In this paper, the design of the Lidar is described. T ... More
Presented by Dr. Qiaojun LIU on 29 Jun 2017 at 17:30
Type: Oral Session: Lidar tutorials
Track: Lidar tutorials
Presented by Dr. Volker FREUDENTHALER on 25 Jun 2017 at 10:00
Type: Poster Session: Posters: Lidar networks
Track: Lidar networks Board #: 091
PollyNET is a network of portable, automated, and continuously measuring depolarization Raman lidars of type Polly operated by several institutes worldwide. The data from permanent and temporary measurements sites are automatically processed in terms of optical aerosol profiles and displayed in near-real time at polly.tropos.de. According to current schedules, the network will grow by 3-4 systems ... More
Presented by Dr. Holger BAARS on 27 Jun 2017 at 17:30
Type: Poster Session: Posters: Lidars applications in atmospheric structure and composition: aerosols, clouds, trace gases
Track: Lidars applications in atmospheric structure and composition: aerosols, clouds, trace gases Board #: 051
Aerosol properties at daytime are well characterized by combination of lidar and sun/sky photometry. However, at night-time sky radiances are not usually available to obtain a reliable characterization of atmospheric aerosol columnar properties. This work proposes the use of high dynamic range (HDR) images in order to obtain information about sky radiance at night. HDR images are combined with the ... More
Presented by Mr. Jose Antonio BENAVENT-OLTRA on 29 Jun 2017 at 17:30
Type: Oral Session: Lidar applications in atmospheric structure and composition: aerosols, clouds, trace gases
Track: Lidars applications in atmospheric structure and composition: aerosols, clouds, trace gases
A source of error in microphysical retrievals and model simulations is the assumption that clouds are composed of only randomly oriented ice crystals. This assumption is frequently not true, as evidenced by optical phenomena such as parhelia. Here, observations from the Cloud, Aerosol and Polarization Backscatter Lidar at Summit, Greenland are utilized along with other sensors to examine the prope ... More
Presented by Dr. Ryan NEELY on 28 Jun 2017 at 09:30
Type: Poster Session: Posters: Recent advances in lidar technology
Track: Recent advances in lidar technology Board #: 011
To fulfill the CO2 IPDA space-borne measurement requirements a laser set-up based on a Q-switched Ho:YLF master oscillator-power amplifier (MOPA) configuration is developed. The transmitter can generate a single mode dual-wavelength radiation “ON” and “OFF”. Laser performances are assessed in single pulse operation and the double pulse operation is demonstrated. LIDT and radiation tests ha ... More
Presented by Mrs. Jessica BARRIENTOS - PELLEGRINO on 26 Jun 2017 at 17:30
Type: Oral Session: Lidar applications in weather/meteorology, air quality and climate-global change
Track: Lidar applications in weather/meteorology, air quality and climate-global change
In order to build trust in the self-reported GHG emission rates by countries, verification against independent monitoring systems is of prerequisite to check the reported budgets. We report on a new method on quantification of emission rates from strong greenhouse gas (GHG) point sources using airborne Integrated Path Differential Absorption (IPDA) Lidar measurements.
Presented by Dr. Gerhard EHRET on 27 Jun 2017 at 12:15
Type: Poster Session: Posters: Lidars applications in atmospheric structure and composition: aerosols, clouds, trace gases
Track: Lidars applications in atmospheric structure and composition: aerosols, clouds, trace gases Board #: 051
We use 2 years of CALIOP data to quantify the AOD of the CALIOP’s undetected layers. To quantify the undetected layer AOD (ULA) everywhere, an unconstrained retrieval is applied globally using a lidar ratio of 28.75 sr estimated from MODIS AOD constrained retrievals. We find a global mean ULA of 0.031±0.052. This study provides an estimate of the complement of AOD that is not detected by lidar, ... More
Presented by Dr. Man-Hae KIM on 29 Jun 2017 at 17:30
Type: Poster Session: Posters: Recent advances in lidar technology
Track: Recent advances in lidar technology Board #: 011
We examined the applicability of Raman spectroscopy as a laser remote sensing tool for monitoring CH4 in water. The Raman technique has already been used successfully for measurements of CO2 gas in water. In this paper, considering the spectral transmittance of water, UV Q-switched Nd:YAG laser at 355 nm was used for the detection of the CH4 Raman signals. The Raman signals at 2892 cm-1 from CH4 d ... More
Presented by Dr. Toshihiro SOMEKAWA on 26 Jun 2017 at 17:30
Type: Poster Session: Posters: Recent advances in lidar technology
Track: Recent advances in lidar technology Board #: 011
Backscattered light from water clouds remain polarized while, multiple scattering depolarize. The depolarization is a function of the droplets size, cloud extinction and lidar FOV. Multiple scattering perpendicular polarization is reduced to a second order scattering and this signal related to the droplet particle size. Monte Carlo simulations for clouds at different ranges and effective radius ... More
Presented by Dr. Xiaoying CAO on 26 Jun 2017 at 17:30
Type: Poster Session: Posters: Lidars applications in atmospheric structure and composition: aerosols, clouds, trace gases
Track: Lidars applications in atmospheric structure and composition: aerosols, clouds, trace gases Board #: 051
The fixed LiDAR system in Durban at University of KwaZulu-Natal (UKZN) has been installed in 1999 and operational until 2004. By 2004, the system has been relocated and there were no successful operational due to different technical and instrumental problems. The restructuring of the LiDAR has been initiated in 2013 and now the system perform to measure vertical profile of aerosol in the height ... More
Presented by Prof. Sivakumar VENKATARAMAN on 29 Jun 2017 at 17:30
Type: Poster Session: Posters: Lidars applications in atmospheric structure and composition: aerosols, clouds, trace gases
Track: Lidars applications in atmospheric structure and composition: aerosols, clouds, trace gases Board #: 051
Visible FBG is used as spectroscopic system of rotational Raman lidar to achieve miniaturization and lightweight. Temperature response of spectroscopic system at a laser wavelength of 532nm is analyzed. According to numerical analysis, the offset of FBG’s center waveleng this 11.03nm/K with the temperature change. The experimental result shows that offset of surface-bonded FBG’s center wavelen ... More
Presented by Dr. Li WANG, Dr. Jun WANG, Dr. Qing YAN, Dr. Fei GAO, Dr. Jingjing LIU, Prof. Dengxin HUA on 29 Jun 2017 at 17:30
Type: Oral Session: Lidar applications in atmospheric structure and composition: aerosols, clouds, trace gases
Track: Lidars applications in atmospheric structure and composition: aerosols, clouds, trace gases
HSRL lidars are being considered for deployment to space to retrieve aerosol microphysics. The literature is mostly focused on the monostatic configuration; but, in this paper, we show that additional information for the retrieval of microphysics can be obtained by adding a second detector in a bistatic configuration. The information gained from the additional measurements helps reduce the ill-pos ... More
Presented by Prof. Barry GROSS, Mr. Nathaniel LEVITAN on 29 Jun 2017 at 11:00
Type: Poster Session: Posters: Lidars applications in atmospheric structure and composition: aerosols, clouds, trace gases
Track: Lidars applications in atmospheric structure and composition: aerosols, clouds, trace gases Board #: 051
We present the results of retrieval of microphysical characteristics from the data of measurements by means of Raman lidar. The report is devoted to the theoretical aspects of retrieving the particle size distribution function at the known refractive index m (section 2). When estimating it together (section 3), the retrieved refractive index is non-linearly related with the optical coefficients an ... More
Presented by Mr. Ioganes PENNER on 29 Jun 2017 at 17:30
Type: Oral Session: Synergy of lidars and other sensors
Track: Synergy of lidars and other sensors
To develop a microphysical model of cirrus clouds, data obtained by Raman lidar RAMSES and a tilted ceilometer are studied synergistically. The measurements are interpreted by use of a data archive containing the backscattering matrixes as well as the depolarization, color and lidar ratios of ice crystals of different shapes, sizes and spatial orientations calculated within the physical-optics app ... More
Presented by Prof. Anatoli BOROVOI on 30 Jun 2017 at 11:00
Type: Poster Session: Posters: Lidar applications in weather/meteorology, air quality and climate-global change
Track: Lidar applications in weather/meteorology, air quality and climate-global change Board #: 041
A Raman lidar for temperature and humidity profiling with high spatial resolution and low blind area was designed. It has the space resolution 3 m and operation range 5-3000 m. The measurement accuracy of temperature is ±1 K, and ±5% for humidity measurements. The lidar use a pure rotational and vibrational rotational Raman technology for temperature and humidity profiling correspondingly.
Presented by Sergei BOBROVNIKOV on 27 Jun 2017 at 17:30
Type: Oral Session: Lidar applications in weather/meteorology, air quality and climate-global change
Track: Lidar applications in weather/meteorology, air quality and climate-global change
The development of oil and gas drilling and the opening of new shipping routes, in the Barents and Norway seas, rise new climate and air quality challenges to the Arctic environment. To improve our knowledge of the interactions between aerosols, water vapor and cloud cover, within the French PARCS project, Raman lidar observations were performed from the ground and an ultra-light aircraft near the ... More
Presented by Dr. Patrick CHAZETTE on 27 Jun 2017 at 11:45
Type: Oral Session: Middle and upper atmospheric lidar
Track: Middle and upper atmospheric lidar
The Rayleigh lidar at National Atmospheric Research Laboratory, Gadanki (13.5°N, 79.2°E), India operates at 532 nm green laser with ~600 mJ/pulse since 2007. The vertical temperature profiles are derived above ~30 km by assuming the atmosphere is in hydrostatic equilibrium and obeys ideal gas law. A large mesospheric inversion layer (MIL) is observed at ~77.4-84.6 km on the night of 22 March 200 ... More
Presented by Dr. RAMESH KARANAM on 29 Jun 2017 at 16:15
Session: Exhibition
Board #: 999
on 26 Jun 2017 at 09:00
Type: Oral Session: Lidar networks
Track: Lidar networks
Recent developments of lidars and data analysis methods for AD-Net, and the studies using AD-Net are presented. Continuous observation was started in 2001 at three stations using polarization-sensitive Mie-scattering lidars. Currently, lidars, including three multi-wavelength Raman lidars and one high-spectral-resolution lidar, are operated at 20 stations. Recent studies on validation/assimilation ... More
Presented by Dr. Nobuo SUGIMOTO on 30 Jun 2017 at 14:30
Type: Poster Session: Posters: Lidars applications in atmospheric structure and composition: aerosols, clouds, trace gases
Track: Lidars applications in atmospheric structure and composition: aerosols, clouds, trace gases Board #: 051
A modified cloud mask algorithm was applied to the CALIOP data to have more ability to detect the clouds in the lower atmosphere. In this algorithm, we also adopt the fully attenuation discrimination and the remain noise estimation using the data obtained at an altitude of 40 km to avoid contamination of stratospheric aerosols. The new cloud mask shows an increase in the lower cloud fraction. Comp ... More
Presented by Dr. Shuichiro KATAGIRI on 29 Jun 2017 at 17:30
Type: Poster Session: Posters: Synergy of lidars and other sensors
Track: Synergy of lidars and other sensors Board #: 081
During the period of August-September 2016 an intensive campaign was carried out to assess aerosol optical properties in São Paulo-Brazil aiming to detect long-range aerosol transport events and to characterize the instrument regarding data quality. Aerosol optical properties retrieved by the GALION - LALINET SPU lidar station and collocated AERONET sunphotometer system are presented as extinctio ... More
Presented by Dr. Fabio LOPES on 27 Jun 2017 at 17:30
Type: Poster Session: Posters: Synergy of lidars and other sensors
Track: Synergy of lidars and other sensors Board #: 081
We are developing the method to retrieve the vertical profiles of aerosols by the synergy of CALIOP and MODIS data. In the method, four aerosol components, water-soluble, light absorbing carbonaceous, dust, and sea salt particles are assumed, and their vertical profiles are optimized to all the measurements. We applied the method to the biomass-burning case in Africa. The result showed the much am ... More
Presented by Dr. Rei KUDO on 27 Jun 2017 at 17:30
Type: Oral Session: Commercial lidar systems, ceilometers and critical components.
Track: Commercial lidar systems, ceilometers and critical components
The paper is focused on the study of atmospheric conditions determining low vertical visibility over Henri Coanda airport. A network of ceilometers and a sodar were used to detect fog and low level cloud layers. In our study, vertical visibility from ceilometers and acoustic reflectivity from sodar for November 2016 were used to estimate fog depth and top of fog layers, respectively. The correlat ... More
Presented by Mr. Livius BUZDUGAN on 29 Jun 2017 at 17:15
Type: Poster Session: Posters: Recent advances in lidar technology
Track: Recent advances in lidar technology Board #: 011
Monitoring the emission of gases is difficult to achieve in industrial sites and in environments presenting poor infrastructures. This worry highlights the need for developing robust methodologies coupled to Lidar technology allowing remote sensing of gas emission. We will present OSAS in details, which is a new methodology to evaluate gas concentration emission from spectrally integrated differen ... More
Presented by Dr. Sandrine GALTIER on 26 Jun 2017 at 17:30
Type: Poster Session: Posters: Commercial lidar systems, ceilometers and critical components
Track: Commercial lidar systems, ceilometers and critical components Board #: 111
This paper is shortly presenting the two basic lidar system configurations respectively a **micro-lidar** and a **multi-wavelength lidar** systems developed by SC **EnviroScopY SRL (ESYRO)** from Iasi – Romania in the last decade. Furthermore in addition to the *comparative analysis* of the two technical configurations the examples of various tests and the capability of the two systems to perf ... More
Presented by Dr. Ioan BALIN, Dr. Mihai CAZACU, Mr. Dragos BALANICI, Dr. Ovidiu TUDOSE on 26 Jun 2017 at 17:30
Type: Poster Session: Posters: Spaceborne-Airborne lidar missions
Track: Spaceborne-Airborne lidar missions Board #: 021
By the end of 2017, ESA will launch ALADIN, a direct detection Doppler wind lidar operating at 355nm. An important tool for validating and optimizing ALADIN’s hardware and data processors with real atmospheric signals is the ALADIN airborne demonstrator. In order to validate aerosol products from ALADIN, an algorithm for the retrieval of atmospheric backscatter and extinction profiles from A2D w ... More
Presented by Dr. Alexander GEISS on 26 Jun 2017 at 17:30
Type: Oral Session: Lidar tutorials
Track: Lidar tutorials
Presented by Ioannis BINIETOGLOU on 25 Jun 2017 at 11:30
Type: Poster Session: Posters: Lidars applications in atmospheric structure and composition: aerosols, clouds, trace gases
Track: Lidars applications in atmospheric structure and composition: aerosols, clouds, trace gases Board #: 051
In this work lidar-based IWC retrievals obtained in tropical mesoscale convective systems are evaluated in the context of an extensive in-situ and remote sensing instrumentation suite. Based on a test case of May 27, 2015 lidar-derived IWC values at 50 m above the aircraft showed a good agreement with in-situ IWC measurements (R2=0.77). In several cases lidar-only IWC profiles were compared to co ... More
Presented by Konstantin BAIBAKOV on 29 Jun 2017 at 17:30
Type: Poster Session: Posters: Lidar networks
Track: Lidar networks Board #: 091
The South American Environmental Risk Management Network (SAVER-Net) is an instrumentation network, mainly composed by lidars, to provide real-time information for atmospheric hazards and risk management purposes in South America. This lidar network have been developed since 2012 and all its sampling points are expected to be fully implemented by 2017. This paper describes the network’s status a ... More
Presented by Dr. Pablo RISTORI on 27 Jun 2017 at 17:30
Type: Poster Session: Posters: Lidars applications in atmospheric structure and composition: aerosols, clouds, trace gases
Track: Lidars applications in atmospheric structure and composition: aerosols, clouds, trace gases Board #: 051
A comprehensive analysis of the seasonal variability of the optical and geometrical properties of Saharan dust aerosols over the city of Athens, Greece, is presented for a 17‐year time period (2000‐2016), as derived from multi-wavelength Raman lidar measurements. For our analysis we used monthly‐mean values and time periods under cloud‐free conditions.
Presented by Mrs. OURANIA SOUPIONA, Prof. Alexandros PAPAYANNIS on 29 Jun 2017 at 17:30
Type: Poster Session: Posters: Commercial lidar systems, ceilometers and critical components
Track: Commercial lidar systems, ceilometers and critical components Board #: 111
Three study cases of Saharan dust intrusions over southern part of the Romania were performed. For these studies the data base from the Ceilometers located at Magurele and Strejnic was used. In addition, the meteorological conditions were analyzed using WLK air circulation Catalogue and MODIS data imagery products. For better understanding of the atmospheric parameters we perform HYSPLIT dispersio ... More
Presented by Mrs. Ana Denisa URLEA on 26 Jun 2017 at 17:30
Type: Poster Session: Posters: Middle and upper atmospheric lidar
Track: Middle and upper atmospheric lidar Board #: 031
The present work is focused on the study of wave activity due to internal gravity waves as a function of the polar vortex position using the Rayleigh LIDAR technique during the southern spring from 2010-2015. These data are compared with satellite measurements provided by MLS, SABER and COSMIC. The position of the polar vortex is characterized by the equivalent latitude and potential vorticity fo ... More
Presented by Mr. Jonathan QUIROGA, Dr. Jacobo SALVADOR on 26 Jun 2017 at 17:30
Type: Oral Session: Synergy of lidars and other sensors
Track: Synergy of lidars and other sensors
The ATmospheric LIDar ATLID is part of the payload of the Earth Cloud and Aerosol Explorer (EarthCARE) satellite mission, the sixth Earth Explorer Mission of the European Space Agency (ESA) Living Planet Program. EarthCARE is a joint collaborative satellite mission conducted between ESA and the National Space Development Agency of Japan (JAXA). The payload consists of four instruments (two active ... More
Presented by Georgios TZEREMES on 30 Jun 2017 at 09:00
Type: Oral Session: Synergy of lidars and other sensors
Track: Synergy of lidars and other sensors
In this study we explore how the combination of 3 backscatter and 2 extinction lidar data with data that can be collected with ground-based and space-borne passive remote sensors, e.g. phase function coefficients which can be derived at various measurement wavelengths and scattering angles can result in improved profiles of dust microphysical properties. The algorithm is based on a light-scatterin ... More
Presented by Dr. alexei KOLGOTIN, Dr. Detlef MÜLLER on 30 Jun 2017 at 11:15
Type: Poster Session: Posters: Lidar applications in weather/meteorology, air quality and climate-global change
Track: Lidar applications in weather/meteorology, air quality and climate-global change Board #: 041
In this study, spatial distribution of aerosols in New York City is studied using a scanning eye-safe 532 *nm* elastic-backscatter micro pulse lidar. Observations show dynamics of the boundary layer, inhomogeneous aerosol features and mixing processes. Simultaneous measurements of wind, temperature and water vapor are used to understand dynamics and evolution of aerosol distribution. Furthermore ... More
Presented by Mr. Adrian DIAZ on 27 Jun 2017 at 17:30
Type: Oral Session: Spaceborne-Airborne lidar missions
Track: Spaceborne-Airborne lidar missions
The ADM/Aeolus mission will provide a global coverage of atmospheric wind profiles, urgently needed to enhance the quality of weather forecasts and improve climate analyses. Of particular interest is the potential to improve analysis of tropical weather systems, both in terms of accuracy of the initial state for numerical weather prediction and in terms of tropical circulation description in clima ... More
Presented by Prof. Erland KÄLLÉN on 26 Jun 2017 at 09:30
Type: Oral Session: Lidar applications in atmospheric dynamics and surface exchanges: boundary layer, winds and turbulence
Track: Lidar applications in atmospheric dynamics and surface exchanges: boundary layer, winds and turbulence
Within this contribution we will present the first measurements of the sensible heat flux profile in the atmospheric boundary layer made with combined rotational Raman temperature lidar and Doppler lidar.
Presented by Dr. Andreas BEHRENDT on 27 Jun 2017 at 17:00
Type: Poster Session: Posters: Recent advances in lidar technology
Track: Recent advances in lidar technology Board #: 011
To observe wave sea dynamics, we developed a LED based mini-lidar and the high-speed photon counter to catch the target motion of 0.1–1Hz. The power LED of 0.75W@385nm was utilized. Its divergence is 10mrad, while the receiver’s field of view is <5mrad. This setup is eye-safe and robustness for rough treatment. The pulse frequency is 0.15m and the spatial resolution is 500kHz. The ground exper ... More
Presented by Dr. Tatsuo SHIINA on 26 Jun 2017 at 17:30
Type: Poster Session: Posters: Lidar applications in atmospheric dynamics and surface exchanges: boundary layer, winds and turbulence
Track: Lidar applications in atmospheric dynamics and surface exchanges: boundary layer, winds and turbulence Board #: 061
Shipborne wind observations by the Coherent Doppler Lidar (CDL) during the 2014 Yellow Sea campaign are presented to study the structure of the Marine Atmospheric Boundary Layer (MABL). This paper gives an analysis of the correction for horizontal and vertical wind measurement, demonstrating that the combination of the CDL with the attitude correction system enables the retrieval of wind profiles ... More
Presented by Ms. Xiaochun ZHAI, Prof. Songhua WU on 27 Jun 2017 at 17:30
Type: Oral Session: Lidar tutorials
Track: Lidar tutorials
Presented by Prof. Alexandros PAPAYANNIS on 25 Jun 2017 at 09:00
Type: Poster Session: Posters: Recent advances in lidar technology
Track: Recent advances in lidar technology Board #: 011
Atmospheric lidar towards eye safe infrared bands is attractive for profiling and classifying gases, particles and aerofauna. However, the low back-scatter, bulky sources and noisy cascade detectors constitute a challenge for retrieving the molecular echo. Here we present a simple and compact implementation of Scheimpflug lidar extended to the InGaAs detector range. We present examples of multi-ba ... More
Presented by Dr. Mikkel BRYDEGAARD, Prof. Sune SVANBERG, Prof. Joakim BOOD on 26 Jun 2017 at 17:30
Type: Poster Session: Posters: Synergy of lidars and other sensors
Track: Synergy of lidars and other sensors Board #: 081
Siberian Lidar Station created at V.E. Zuev Institute of Atmospheric Optics SB RAS and operating in Tomsk (56.5° N, 85.0° E) is a unique atmospheric observatory. It combines up-to-date instruments for remote laser and passive sounding for the study of aerosol and cloud fields, air temperature and humidity, and ozone and gaseous components of the ozone cycles. In addition to controlling a wide ra ... More
Presented by Prof. Gennady MATVIENKO on 27 Jun 2017 at 17:30
Type: Poster Session: Posters: Recent advances in lidar technology
Track: Recent advances in lidar technology Board #: 011
mobile laser scanner have become of the most dominant tools for performing many geomatics applications. The data simulation of such a LiDAR system is significantly useful not only to design an optimal sensor for a specific application but also to assess data processing algorithms with various kinds of test data. In this paper, a simulation program is developed for generating 3D LiDAR data such as ... More
Presented by Dr. Essam HAMZA on 26 Jun 2017 at 17:30
Type: Oral Session: Lidar applications in atmospheric structure and composition: aerosols, clouds, trace gases
Track: Lidars applications in atmospheric structure and composition: aerosols, clouds, trace gases
A new multi-channel Raman Lidar is under development for future monitoring of hydrogen and water vapor profiles along radioactive waste disposal cells. Vibrational Raman scattering of a 355 nm laser beam from nitrogen, hydrogen and water vapor is used for concentration profiles retrieval. We report on first experiment results for concept demonstration. Simultaneous hydrogen and water vapor profile ... More
Presented by Mr. Anasthase LIMÉRY on 28 Jun 2017 at 11:30
Type: Poster Session: Posters: Lidar networks
Track: Lidar networks Board #: 091
LALINET lidar stations were used to track down aerosols generated over Amazon region and transported over the continent. These data were merged with collocated Aeronet stations in order to help in their identification together with HYSPLIT simulations. The results show indication of how aerosol can age in their long transport over regions South and Westward from the source areas by change of their ... More
Presented by Dr. Eduardo LANDULFO on 27 Jun 2017 at 17:30
Type: Poster Session: Posters: Recent advances in lidar technology
Track: Recent advances in lidar technology Board #: 011
DARLIOES - the advanced LIDAR is based on space- and time-resolved RAMAN and breakdown spectroscopy, to investigate chemical and toxic compounds, their kinetics and physical properties at high temporal (2 ns) and spatial (few cm) resolution. The high spatial and temporal resolution are nedeed to resolve a large variety of chemical troposphere compounds, emissions from aircraft, the self-organizati ... More
Presented by Prof. Silviu GURLUI, Dr. Marius Mihai CAZACU on 26 Jun 2017 at 17:30
Type: Oral Session: Spaceborne-Airborne lidar missions
Track: Spaceborne-Airborne lidar missions
Space-based modeling of high-energy 2-m triple-pulsed Integrated Path Differential Absorption (IPDA) lidar was conducted to demonstrate carbon dioxide (CO2) measurement capability and to evaluate random and systematic errors. A high pulse energy laser and an advanced MCT e-APD detection system were incorporated in this model. Projected performance shows 0.5 ppm precision and 0.3 ppm bias in low ... More
Presented by Dr. Upendra SINGH on 26 Jun 2017 at 11:30
Type: Oral Session: Spaceborne-Airborne lidar missions
Track: Spaceborne-Airborne lidar missions
The performance of a space-borne water vapour and temperature Raman lidar has been simulated, with a specific attention to the Earth Explorer Missions in the frame of ESA's Living Planet Program. We report simulations under a variety of atmospheric scenarios, demonstrating the capability of a space Raman lidar to provide global-scale water vapour and temperature measurements in the troposphere wit ... More
Presented by Prof. Paolo DI GIROLAMO on 26 Jun 2017 at 12:15
Type: Poster Session: Posters: Lidars applications in atmospheric structure and composition: aerosols, clouds, trace gases
Track: Lidars applications in atmospheric structure and composition: aerosols, clouds, trace gases Board #: 051
Cirrus clouds effect the energy budget and hydrological cycle of the earth atmosphere. The Tibetan Plateau (TP) plays a significant role in the global and regional climate. Optical and geometrical properties of cirrus clouds in the TP were measured July-August 2014 by lidar and radiosonde. The statistics and temperature dependences of the corresponding properties are analyzed. The cirrus cloud for ... More
Presented by Mr. Guangyao DAI on 29 Jun 2017 at 17:30
Type: Oral Session: Lidar applications in atmospheric structure and composition: aerosols, clouds, trace gases
Track: Lidars applications in atmospheric structure and composition: aerosols, clouds, trace gases
A Python code was developed to automatically retrieve the aerosol type (and its predominant component in the mixture) from EARLINET’s 3 backscatter and 2 extinction data. The typing relies on Artificial Neural Networks which are trained to identify the most probable aerosol type from a set of mean-layer intensive optical parameters. This paper presents the use and limitations of the code with re ... More
Presented by Dr. DOINA NICOLAE on 29 Jun 2017 at 10:00
Type: Oral Session: Large scale campaigns
Track: Large-scale campaigns
In August 2015, the AER-D campaign made use of the FAAM research aircraft based in Cape Verde, and targeted mineral dust. First results will be shown here. The campaign had multiple objectives: (1) lidar dust mapping for the validation of satellite and model products; (2) validation of sunphotometer remote sensing with airborne measurements; (3) coordinated measurements with the CATS lidar ... More
Presented by Dr. Franco MARENCO on 29 Jun 2017 at 14:45
Type: Poster Session: Posters: Lidar applications in atmospheric dynamics and surface exchanges: boundary layer, winds and turbulence
Track: Lidar applications in atmospheric dynamics and surface exchanges: boundary layer, winds and turbulence Board #: 061
The Planetary Boundary Layer (PBL) is the lowermost part of the troposphere. In this work, we analyzed the high order moments and PBL height detected continuously by three remote sensing systems: an elastic lidar, a Doppler lidar and a passive Microwave Radiometer, during the SLOPE campaign, which was held in Granada from May to July 2016. This study confirms the feasibility of this systems for t ... More
Presented by Mr. Gregori ARRUDA MOREIRA on 27 Jun 2017 at 17:30
Type: Oral Session: Lidar applications in atmospheric structure and composition: aerosols, clouds, trace gases
Track: Lidars applications in atmospheric structure and composition: aerosols, clouds, trace gases
Rain evaporation, while significantly contributing to moisture and heat cloud budgets, is a still poorly understood process with few measurements presently available. A synergy between lidar, disdrometer and an analytical model will provide useful information on the microphysical characteristics of light precipitation, i.e. drizzle and virga.
Presented by Simone LOLLI on 29 Jun 2017 at 11:30
Type: Poster Session: Posters: Large-scale campaigns
Track: Large-scale campaigns Board #: 101
TOLNet is a unique network of lidar systems that measure atmospheric profiles of ozone and aerosols, to contribute to air-quality studies, atmospheric modeling, and satellite validation efforts. Three lidars, TROPOZ, TOPAZ, LMOL in the DISCOVER-AQ mission to measure sub-hourly ozone variations from near the surface to the top of the troposphere. These results indicate good measurement accuracy for ... More
Presented by Dr. Mike NEWCHURCH on 29 Jun 2017 at 17:30
Type: Oral Session: Lidar applications in atmospheric structure and composition: aerosols, clouds, trace gases
Track: Lidars applications in atmospheric structure and composition: aerosols, clouds, trace gases
The 2-year lidar water vapor database (November 2013 - October 2015) of the Maïdo Observatory (Reunion Island / 21°S,55.5°E) is now calibrated. The performance of the lidar to provide accurate vertical structures are shown to be good. The ability of measuring quantities of a few ppmv in the lower stratosphere is demonstrated up to 22 km (based on Cryogenic Frostpoint Hygrometer sondes/lidar pro ... More
Presented by Hélène VÉRÈMES, Philippe KECKHUT on 28 Jun 2017 at 11:00
Type: Poster Session: Posters: Spaceborne-Airborne lidar missions
Track: Spaceborne-Airborne lidar missions Board #: 021
This work describes advances in critical lidar technologies and techniques developed as part of the NASA Active Sensing of CO2 Emissions over Nights, Days, and Seasons (ASCENDS) CarbonHawk Experiment Simulator (ACES) system for measuring atmospheric column carbon dioxide (CO2) mixing ratios. This work provides an overview of these technologies and results from recent test flights during the NASA A ... More
Presented by Dr. Michael OBLAND on 26 Jun 2017 at 17:30
Type: Poster Session: Posters: Synergy of lidars and other sensors
Track: Synergy of lidars and other sensors Board #: 081
Accurate measurements of the vertical profiles of atmospheric temperature are necessary to advance the knowledge of dynamics-thermodynamics-radiative interaction mechanisms triggering convection, and ultimately improve weather forecasting capabilities. Comprehensive inter-comparisons between different remote sensing and in-situ sensors have to be carried for the purpose of obtaining accurate error ... More
Presented by Mr. Benedetto DE ROSA on 27 Jun 2017 at 17:30
Type: Poster Session: Posters: Lidar applications in weather/meteorology, air quality and climate-global change
Track: Lidar applications in weather/meteorology, air quality and climate-global change Board #: 041
DWD operates a network of 100 CHM15K-Nimbus ceilometers for observations of vertical aerosol profiles. The occurrence of aerosol layers from long-range transport is monitored since 2013. Most of them (40 days per station and year) originate in the Sahara. We will present a detailed description of our data analysis together with the results of a statistical analysis of backscatter profiles, e.g., r ... More
Presented by Dr. Ina MATTIS on 27 Jun 2017 at 17:30
Type: Oral Session: Lidar networks
Track: Lidar networks
This network provides profiles of attenuated backscatter in real time and complements existing networks of high performance research lidars bringing in a higher density network of instruments and high data availability. It enhances significantly the capabilities of the current observing system to detect volcanic ash and provides the basis for new applications in the area of data assimilation, air ... More
Presented by Alexander HAEFELE on 30 Jun 2017 at 15:15
Type: Poster Session: Posters: Middle and upper atmospheric lidar
Track: Middle and upper atmospheric lidar Board #: 031
We use an Optimal Estimation Method (OEM) to retrieve ozone profiles from the CANDAC Stratospheric Ozone Differential Absorption Lidar in Eureka, Canada. The OEM is a well known inverse method in which a forward model (FM) is used to describe the instrument and geophysical situation. We have developed a FM and are testing its validity using synthetic measurements. We will present the advantages o ... More
Presented by Ms. Ghazal FARHANI on 26 Jun 2017 at 17:30
Type: Poster Session: Posters: Lidar networks
Track: Lidar networks Board #: 091
The Met Office completed the deployment of ten lidars (UV Raman and depolarization), each accompanied by a sunphotometer (polarized model), to provide quantitative monitoring of volcanic ash over UK for VAAC London. The lidars provide range corrected signal and volume depolarization ratio in near-real time. The sunphotometers deliver aerosol optical depth, Angstrom exponent and degree of linear po ... More
Presented by Dr. Mariana ADAM on 27 Jun 2017 at 17:30
Type: Oral Session: Commercial lidar systems, ceilometers and critical components.
Track: Commercial lidar systems, ceilometers and critical components
The INTERACT-II (INTERcomparison of Aerosol and Cloud Tracking) campaign, performed at the CNR-IMAA Atmospheric Observatory (760m a.s.l., 40.60°N, 15.72°E), aims to evaluate the performances of commercial automatic lidars and ceilometers for atmospheric aerosol profiling,through the comparison with Potenza EARLINET (European Aerosol Research Lidar NETwork) lidars. The results of the campaign and ... More
Presented by Dr. Marco ROSOLDI on 29 Jun 2017 at 17:00
Type: Poster Session: Posters: Lidar networks
Track: Lidar networks Board #: 091
The lidar calibration centre (LiCal) provides a wide range of applications for detailed lidar and ceilometer characterization. Depending on the installation, the facility provides characterization of single lidar components, optical blocks and direct comparisons with reference lidar instruments. LiCal offers the opportunity to apply for lidar debugging, optimization and intensive training workshop ... More
Presented by Mr. Livio BELEGANTE on 27 Jun 2017 at 17:30
Type: Poster Session: Posters: Lidars applications in atmospheric structure and composition: aerosols, clouds, trace gases
Track: Lidars applications in atmospheric structure and composition: aerosols, clouds, trace gases Board #: 051
This research presents the long-term lidar measurement results of the height and width variation of the volcanic aerosol layer induced by the eruption of the Nabro volcano (Eritrea, East Africa). The volcanic aerosol layer is observed for the first time at our site on 19 June 2011. The variation of the vertical structure of the stratospheric aerosol layer is analysed using particle backscatter coe ... More
Presented by Dr. Youngmin NOH, Dr. Kwanchul KIM on 29 Jun 2017 at 17:30
Type: Poster Session: Posters: Lidars applications in atmospheric structure and composition: aerosols, clouds, trace gases
Track: Lidars applications in atmospheric structure and composition: aerosols, clouds, trace gases Board #: 051
We investigate the potential to use CALIOP aerosol products to provide profiles of cloud condensation nucleus (CCN) and ice nucleating particle (INP) number concentrations. The method is applied along the orbit of CALIPSO over Cape Verde. Firstly we separate the backscatter profiles of dust and smoke aerosols. Then appropriate lidar ratio values are used to estimate the extinction coefficient pro ... More
Presented by Dr. Elina GIANNAKAKI on 29 Jun 2017 at 17:30
Type: Poster Session: Posters: Spaceborne-Airborne lidar missions
Track: Spaceborne-Airborne lidar missions Board #: 021
To quantified impact of solar radiation on the retrieved wind of space-borne Doppler wind lidar,we calculated the photon number arisen from solar radiation and received by lidar, then obtain the useful photon number by a simulated Aeolus, finally, derived the retrieved error through Rayleigh channel wind retrieval algorithm. As is shown in the result, error decrease with decreasing height, and t ... More
Presented by Chuanliang ZHANG, Prof. Xuejin SUN on 26 Jun 2017 at 17:30
Type: Poster Session: Posters: Lidar applications in ecosystems research
Track: Lidar applications in ecosystems research Board #: 071
We report water quality monitoring using a LIFS lidar featuring daytime operation at any place. Novel techniques such as detection of entire fluorescence spectrum excited by an UV laser, Excitation-Emission-Matrix experiment, and synchronous detection were introduced. Three-year field observation at the Tenryu River/Lake Suwa could capture monthly/yearly variations of concentration of dissolved or ... More
Presented by Prof. Yasunori SAITO on 27 Jun 2017 at 17:30
Type: Poster Session: Posters: Lidar applications in atmospheric dynamics and surface exchanges: boundary layer, winds and turbulence
Track: Lidar applications in atmospheric dynamics and surface exchanges: boundary layer, winds and turbulence Board #: 061
Operating a lidar on Mars would address the crucial need of monitoring wind and aerosol profiles in the boundary layer. We report recent developments of a compact direct-detection wind lidar designed to be accomodated on landed platforms or rovers. A new laser source has been developed and an azimutal scanning capability has been added. Preliminary results of a field campaign are presented. The le ... More
Presented by Anni MÄÄTTÄNEN on 27 Jun 2017 at 17:30
Type: Poster Session: Posters: Lidar applications in weather/meteorology, air quality and climate-global change
Track: Lidar applications in weather/meteorology, air quality and climate-global change Board #: 041
We use backscatter data from the CALIPSO satellite and the HYSPLIT model to create a ten day trajectory for stratospheric aerosols from the February 2014 eruption of the Kelud volcano. Trajectory points are compared with later CALIPSO overpasses to see if an aerosol layer is measured within 50 km and 24 hours of a point, which is called a coincidence. Aerosols are observed to move west towards Mad ... More
Presented by Sean LEAVOR on 27 Jun 2017 at 17:30
Type: Poster Session: Posters: Lidar applications in atmospheric dynamics and surface exchanges: boundary layer, winds and turbulence
Track: Lidar applications in atmospheric dynamics and surface exchanges: boundary layer, winds and turbulence Board #: 061
The vertical structure of the atmospheric boundary layer has been studied by use of a depolarized LiDAR over Tehran, Iran. The boundary layer height remains under 1km, and its retrieval from LiDAR signal have been compared with sounding measurements and meteorological model outputs. It is also shown that the wind speed and direction as well as topography lead to the persistence of air pollution in ... More
Presented by Mr. Hosssein PANAHIFAR on 27 Jun 2017 at 17:30
Type: Oral Session: Lidar applications in atmospheric structure and composition: aerosols, clouds, trace gases
Track: Lidars applications in atmospheric structure and composition: aerosols, clouds, trace gases
In aerosol typing by lidar, sea salt particles are usually assumed to be spherical with a consequently low depolarization ratio. Evidence of dried marine particles at the top of the humid marine layer with a depolarization ratio up to 0.1 has been found at predominately maritime locations on Barbados and in the Southern Atlantic. The depolarization ratio at 355, 532 and 1064 nm for these presumpti ... More
Presented by Mr. Moritz HAARIG on 29 Jun 2017 at 09:00
Type: Oral Session: Lidar applications in atmospheric structure and composition: aerosols, clouds, trace gases
Track: Lidars applications in atmospheric structure and composition: aerosols, clouds, trace gases
Marine stratocumulus clouds are important climate regulators, reflecting sunlight over a dark ocean background. A UV-depolarization lidar on Ascension, a small remote island in the south Atlantic, measured cloud droplet sizes and number concentration using an inversion method based on Monte Carlo modelling of multiple scattering in idealised semi-adiabatic clouds. The droplet size and number conce ... More
Presented by Dr. Martin DE GRAAF on 28 Jun 2017 at 10:00
Type: Poster Session: Posters: Spaceborne-Airborne lidar missions
Track: Spaceborne-Airborne lidar missions Board #: 021
A compact UAV-borne Coherent Doppler Lidar (UCDL) has been developed at the Ocean University of China for the observation of wind profile and boundary layer structure in marine boundary layer. The design, specifications and motion-correction methodology of the UCDL will be presented in detail. Some preliminary results of the first flight campaign in Hailing Island in December 2016 will be discusse ... More
Presented by Prof. Songhua WU, Mr. Qichao WANG on 26 Jun 2017 at 17:30
Type: Poster Session: Posters: Recent advances in lidar technology
Track: Recent advances in lidar technology Board #: 011
A new backscatter and extinction inversion algorithm for High Spectral Resolution Lidar (HSRL) observations was recently introduced in an Applied Optics article by the authors of this paper; simulated data were used in the mentioned paper to quantify the uncertainty of the inferred cross-sections. We present an uncertainty analysis using real data to demonstrate that the new algorithm provides mor ... More
Presented by Mr. Willem MARAIS on 26 Jun 2017 at 17:30
Type: Oral Session: Lidar applications in atmospheric dynamics and surface exchanges: boundary layer, winds and turbulence
Track: Lidar applications in atmospheric dynamics and surface exchanges: boundary layer, winds and turbulence
The complexity of urban boundary layer dynamics poses challenges to those responsible for the design and regulation of buildings and structures in the urban environment. Lidar systems in the New York City Metropolitan region have been used extensively to study urban boundary layer dynamics. These systems, in conjunction with other sensing platforms can provide an observatory to perform research ... More
Presented by Dr. Mark AREND on 27 Jun 2017 at 16:15
Type: Poster Session: Posters: Lidar applications in weather/meteorology, air quality and climate-global change
Track: Lidar applications in weather/meteorology, air quality and climate-global change Board #: 041
During PollyXT lidar observations on 11-16 September 2016 at Warsaw EARLINET site, one day of exceptionally clean background conditions related to Arctic air-mass inflow, was surrounded by a few days with well increased aerosol load due to local pollution. We used this lidar data set to validate the new algorithm, developed in the frame of ESA-SAMIRA project, to improve MSG-SEVIRI based aerosol op ... More
Presented by Dr. Iwona S. STACHLEWSKA on 27 Jun 2017 at 17:30
Type: Oral Session: Synergy of lidars and other sensors
Track: Synergy of lidars and other sensors
Methodology of obtaining vertical profiles of aerosol single scattering properties based on combination of in-situ observations onboard a tethered balloon with remote sensing of sunphotometer and Koldeway Aerosol Raman Lidar is discussed. For cases with high aerosol load during Arctic Haze season 2014 and 2015, SSA >0.95 was retrieved; values of BC and absorption coefficient tend to increase sligh ... More
Presented by Dr. Krzysztof MARKOWICZ on 30 Jun 2017 at 12:00
Type: Oral Session: Middle and upper atmospheric lidar
Track: Middle and upper atmospheric lidar
OEM retrievals of temperature from lidar measurements are robust and practical (Sica and Haefele, 2015). They offer significant improvements over traditional methods. We will show the 500+ night climatology from the Purple Crow Lidar and the improvements offered using OEM, including the quantitative determination of the top altitude of the retrieval and the evaluation of the various systematic and ... More
Presented by Mr. Ali JALALI on 29 Jun 2017 at 16:45
Type: Poster Session: Posters: Recent advances in lidar technology
Track: Recent advances in lidar technology Board #: 011
A ground-based double-pulse 1572 nm integrated path differential absorption (IPDA) lidar is developed for carbon dioxide (CO2) concentration measurement. The lidar could measure the CO2 concentrations continuously by receiving the scattered echo signal from a building about 1300 m away. On the same time the other two instruments of TDLAS and in-situ CO2 analyzer measure the CO2 concentrations. Th ... More
Presented by Prof. Jiqiao LIU, Prof. Weibiao CHEN on 26 Jun 2017 at 17:30
Type: Oral Session: Lidar applications in atmospheric dynamics and surface exchanges: boundary layer, winds and turbulence
Track: Lidar applications in atmospheric dynamics and surface exchanges: boundary layer, winds and turbulence
A high pulse energy 1.5 μm all-fiber coherent Doppler lidar engineering prototype is developed for wind profiles measurement. The lidar system is very compact with 300 μJ single pulse energy output and 100 mm telescope diameter. Wind profiles are measured every 16 seconds with 60m range resolution. Wind profiles of almost 5 km altitude are measured by the lidar. The wind speeds are compared with ... More
Presented by Prof. Jiqiao LIU, Prof. Weibiao CHEN on 27 Jun 2017 at 16:30
Type: Oral Session: Lidar applications in atmospheric structure and composition: aerosols, clouds, trace gases
Track: Lidars applications in atmospheric structure and composition: aerosols, clouds, trace gases
Five TOLNet lidars were deployed at the JPL-Table Mountain Facility for a validation campaign. 50 hours of lidar measurements were acquired by each system, and 18 ozonesondes were launched. All lidars were found to agree within 10% of each other and within 10% of the ozonesonde. Centralized data processing was used to perform a quantitative intercomparison of the uncertainty budgets. Overall the c ... More
Presented by Dr. Thierry LEBLANC on 29 Jun 2017 at 12:15
Type: Poster Session: Posters: Lidar applications in ecosystems research
Track: Lidar applications in ecosystems research Board #: 071
A versatile mobile remote sensing system for multidisciplinary environmental monitoring tasks on the Chinese scene is described. The system includes a 20 Hz Nd:YAG laser-pumped dye laser, optical transmitting/receiving systems with a 30 cm and a 40 cm Newtonian telescope and electronics, all integrated in a laboratory installed on a Jiefang truck. Results from field experiments on atomic mercury ... More
Presented by Prof. Sune SVANBERG on 27 Jun 2017 at 17:30
Type: Poster Session: Posters: Lidars applications in atmospheric structure and composition: aerosols, clouds, trace gases
Track: Lidars applications in atmospheric structure and composition: aerosols, clouds, trace gases Board #: 051
POLIPHON retrieval consists in the vertical separation of two/three aerosol components highlighting their relative contributions in terms of the optical properties and mass concentrations. This method is based on the particular depolarization ratio given for different types of aerosols, and hence to be suitably applied to polarized MPL measurements. Case studies of specific climate-relevant aeroso ... More
Presented by Mrs. Carmen CORDOBA-JABONERO on 29 Jun 2017 at 17:30
Type: Poster Session: Posters: Lidars applications in atmospheric structure and composition: aerosols, clouds, trace gases
Track: Lidars applications in atmospheric structure and composition: aerosols, clouds, trace gases Board #: 051
An unusual Saharan dust outbreak occurred on 20-24 Feb. 2016 over the Iberian Peninsula (IP). This work focuses on the particle vertical distribution investigated at 4 EARLINET stations: Granada, Évora, Valencia and Barcelona. This event was exceptional because: (i) Saharan dust outbreaks over the IP are atypical during wintertime, (ii) the aerosol optical depth reached high values (up to 0.90 at ... More
Presented by Dr. Juan Luis GUERRERO RASCADO on 29 Jun 2017 at 17:30
Type: Poster Session: Posters: Recent advances in lidar technology
Track: Recent advances in lidar technology Board #: 011
The hydrogen(H2) energy system is in practical use in world, there is strong demand of visualization of the H2 gas behavior in plumbing when the gas is displaced. In this study, H2 gas flow in the plumbing which is made with transparent objects was captured as an image of Raman scattering light by the laser beam. Spatial distribution of gas concentration was estimated from the Raman scattering ima ... More
Presented by Dr. Ippei ASAHI on 26 Jun 2017 at 17:30
Type: Poster Session: Posters: Lidar applications in atmospheric dynamics and surface exchanges: boundary layer, winds and turbulence
Track: Lidar applications in atmospheric dynamics and surface exchanges: boundary layer, winds and turbulence Board #: 061
Impulse wind lidar (IWL) signal processing software developed by JSC «BANS» recovers full wind speed vector by radial projections and provides wind parameters information up to 2 km distance. Increasing accuracy and speed of wind parameters calculation signal processing technics have been studied in this research. Measurements results of IWL and continuous scanning lidar were compared. Also, IWL ... More
Presented by Mr. Gleb PETROV, Dr. Nikolay BARANOV on 27 Jun 2017 at 17:30
Type: Poster Session: Posters: Synergy of lidars and other sensors
Track: Synergy of lidars and other sensors Board #: 081
Accurate measurements of the vertical profiles of water vapour are of paramount importance for most key areas of atmospheric sciences. A comprehensive inter-comparison between different remote sensing and in-situ sensors has been carried out in the frame HyMeX-SOP1 for the purpose of obtaining accurate error estimates for these sensors. The inter-comparison involves a ground-based Raman lidar (BAS ... More
Presented by Mr. Benedetto DE ROSA on 27 Jun 2017 at 17:30
Type: Poster Session: Posters: Recent advances in lidar technology
Track: Recent advances in lidar technology Board #: 011
Because of a mixing ratio of about 5 ppm measurements of stratospheric water vapour constitute an enormous challenge. Raman scattering, in principle, allows the backscatter signal to be scaled up in any order by rising the laser power and the receiver size. The Raman lidar at the Schneefernerhaus (2675 m) is based on a 180-W XeCl laser and receivers with 1.5 m and 0.4 m diameter. We plan to presen ... More
Presented by Dr. Thomas TRICKL on 26 Jun 2017 at 17:30
Session: Opening ceremony
Presented by Prof. Mihnea COSTOIU on 26 Jun 2017 at 08:30
Type: Poster Session: Posters: Lidars applications in atmospheric structure and composition: aerosols, clouds, trace gases
Track: Lidars applications in atmospheric structure and composition: aerosols, clouds, trace gases Board #: 051
Optical properties of fresh biomass burning aerosol were measured by lidar during the wild fires in Israel in November 2016. A single-wavelength lidar Polly was operated at the Technion Campus in Haifa. The detector with originally two channels at 532 and 607 nm was recently upgraded with a cross- and a co-polarised channel at 532 nm, and a rotational Raman channel at 530.2 nm. Preliminary results ... More
Presented by Dr. Birgit HEESE on 29 Jun 2017 at 17:30
Type: Poster Session: Posters: Lidars applications in atmospheric structure and composition: aerosols, clouds, trace gases
Track: Lidars applications in atmospheric structure and composition: aerosols, clouds, trace gases Board #: 051
An intense wildfire in western Canada in May 2016 injected smoke aerosols into the atmosphere and the plume was transported to the eastern U. S. We present an integrated quantitative assessment of its impact on local air quality by combined lidar, surface/in-situ, and satellite observations together with model output in New York City. Plume intrusion into the planetary-boundary-layer results in s ... More
Presented by Dr. Fred MOSHARY on 29 Jun 2017 at 17:30