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Intercomparison of column aerosol optical depths from CALIPSO and MODIS-Aqua
2011
Atmospheric Measurement Techniques
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The Cloud-Aerosol Lidar with Orthogonal Polarization (CALIOP) is carried on the CALIPSO satellite and has acquired global aerosol profiles since June 2006. ...
Although differences over land are observed to be larger than over ocean, the bias between CALIOP and MODIS AOD on a regionalseasonal basis is found to be roughly within the envelope of the MODIS expected ...
Over ocean, seven wavelengths (0.47, 0.55, 0.66, 0.86, 1.2, 1.6, and 2.12 µm) are used to retrieve aerosol optical depth and other aerosol properties . ...
doi:10.5194/amt-4-131-2011
fatcat:sqkz7so6h5dtlo4e436xd6cnmy
Intercomparison of CALIOP and MODIS aerosol optical depth retrievals
2010
Atmospheric Measurement Techniques Discussions
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This comparison of CALIOP and MODIS also provides insight into possible biases in the MODIS aerosol optical depth product due to cloud masking and errors in modeling land surface reflectance. ...
Intercomparison of CALIOP and MODIS aerosol optical depth retrievals C. Kittaka et al. ...
The primary products used in this paper are the 0.55 µm Optical Depth Land and Ocean from the MODIS-Aqua Level 2 aerosol data product 20 (MYD04 L2), and the Feature Optical Depth 532 from the CALIOP Level ...
doi:10.5194/amtd-3-3319-2010
fatcat:fqzhwtuikvfiddnhpksilsaojq
Infrared retrievals of dust using AIRS: Comparisons of optical depths and heights derived for a North African dust storm to other collocated EOS A-Train and surface observations
2010
Journal of Geophysical Research
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G., et al. (2010), Infrared retrievals of dust using AIRS: Comparisons of optical depths and heights derived for a North African dust storm to other collocated EOS A-Train and surface observations, ...
The retrieved optical depths are compared against those retrieved using visible and ultraviolet instruments on the A-Train, while dust layer heights are evaluated against lidar data. ...
See www.umbc.edu/hpcf' for more information on HPCF and the projects using its resources. ...
doi:10.1029/2009jd012842
fatcat:2pv4ukcl4bdctbrpby2kgd2lzm
A new method for retrieval of the extinction coefficient of water clouds by using the tail of the CALIOP signal
2011
Atmospheric Chemistry and Physics
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A method is developed based on Cloud-Aerosol Lidar and Infrared Pathfinder Satellite Observations (CALIPSO) level 1 attenuated backscatter profile data for deriving the mean extinction coefficient of water ...
The photo multiplier tubes (PMTs) of the 532 nm detectors (parallel and perpendicular polarizations) of the Cloud-Aerosol Lidar with Orthogonal Polarization (CALIOP) both exhibit a non-ideal recovery of ...
Here, the authors want to also thank Hal Maring and David Considine of NASA Headquarters for discussions and support. Edited by: Q. Fu ...
doi:10.5194/acp-11-2903-2011
fatcat:ypf7lb4mcrfbljb7h5o3pnwhi4
The CALIPSO Automated Aerosol Classification and Lidar Ratio Selection Algorithm
2009
Journal of Atmospheric and Oceanic Technology
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One year of CALIPSO level 2 version 2 data are analyzed to assess the veracity of the CALIPSO aerosol-type identification algorithm and generate vertically resolved distributions of aerosol types and their ...
The aerosol-type distributions are further partitioned according to surface type (land/ocean) and detection resolution (5, 20, and 80 km) for optical and spatial context, because the optically thick layers ...
We are also indebted to the anonymous reviewers for the many useful suggestions and constructive criticism, all of which have significantly improved this paper. ...
doi:10.1175/2009jtecha1231.1
fatcat:z5ncb6zqfvf6vjuctylxsqb7wa
Cirrus optical depth and lidar ratio retrieval from combined CALIPSO-CloudSat observations using ocean surface echo
2012
Journal of Geophysical Research
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Optical Depth of Aerosol (SODA) algorithm and used to retrieve the optical depth of semitransparent single-layered cirrus clouds. ...
convectively active area. (2012), Cirrus optical depth and lidar ratio retrieval from combined CALIPSO-CloudSat observations using ocean surface echo, ...
We would like to thank M. Platt for fruitful discussions in the frame of the CALIPSO mission and the three anonymous reviewers for their helpful comments. ...
doi:10.1029/2011jd016959
fatcat:2eeqdp2zc5auzixezghooijdza
Satellite-derived direct radiative effect of aerosols dependent on cloud cover
2009
Nature Geoscience
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with observed cloud optical properties, to quantify the aerosol DRE and the effect of clouds on it. ...
Although a few modelling studies have attempted to quantify the regional effects of clouds on the DRE (for example, ref. 10), here we use spaceborne lidar observations of aerosols above clouds, together ...
Acknowledgements This work was supported by University of Washington startup funds, NASA's CALIPSO Mission (contract NAS1-99105), National Science Foundation (grants ATM-0601177 and ATM-0205198) and the ...
doi:10.1038/ngeo437
fatcat:csbimnyxgfazbgsv436kep7kzi
Comparison of AOD between CALIPSO and MODIS: significant differences over major dust and biomass burning regions
2013
Atmospheric Measurement Techniques
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In this study, we employed about 6 yr (2006–2011) of CALIPSO level 3 monthly mean gridded aerosol optical depth (AOD) products (daytime and nighttime) for cloud-free conditions, to compare with the Moderate ...
</strong> Cloud–Aerosol Lidar and Infrared Pathfinder Satellite Observations (CALIPSO) provide global vertical profiles of aerosol optical properties for the first time. ...
MODIS AOD data were downloaded using the GES-DISC Interactive Online Visualization and Analysis Infrastructure, a part of the NASA's Goddard Earth Sciences Data and Information Services Center and AERONET ...
doi:10.5194/amt-6-2391-2013
fatcat:amdhhe7bpvhu5m5j662nm4yfdi
Relationships among properties of marine stratocumulus derived from collocated CALIPSO and MODIS observations
2010
Journal of Geophysical Research
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For the 50 km overcast segments the variations in optical depth, t, and droplet effective radius, R e , obtained from the MOD06 and partly cloudy pixel retrievals were in agreement, and the variations ...
In addition, the droplet effective radii retrieved separately using the 1.6, 2.1, and 3.7 mm MODIS reflectances were consistent with droplets growing as clouds thickened and mean values of dlnR e /dlnt ...
This work grew out of participation on the CALIPSO Science Team funded under NASA grants NAS1-99104 and NNX07AT11G and on the MODIS Science Team under NASA grant NNX08AG01G. ...
doi:10.1029/2009jd012046
fatcat:zx6hqpgvhbc3tlc23f542vhs6m
Comparison of AOD between CALIPSO and MODIS: significant differences over major dust and biomass burning regions
2012
Atmospheric Measurement Techniques Discussions
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MODIS AOD data were downloaded using the GES-DISC Interactive Online Visualization and Analysis Infrastructure, a part of the NASA's Goddard Earth Sciences Data and Information Services Center and AERONET ...
CALIPSO aerosol data were obtained from the NASA Langley Research Center Atmospheric Science Data center (ASDC). ...
To look at the AOD over dust regions, we also employed the retrieval product for bright surfaces (Deep Blue Aerosol Optical Depth 550 Land) from the MODIS Aqua level 2 10 km aerosol data product (MYD04 ...
doi:10.5194/amtd-5-8343-2012
fatcat:jaitdcmvkbey7ozs3xadynedl4
Overview of the CALIPSO Mission and CALIOP Data Processing Algorithms
2009
Journal of Atmospheric and Oceanic Technology
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A suite of algorithms has been developed to identify aerosol and cloud layers and to retrieve a variety of optical and microphysical properties. ...
This paper provides a brief overview of the CALIPSO mission, the CALIOP instrument and data products, and an overview of the algorithms used to produce these data products. ...
The authors wish to acknowledge the support and successful cooperation of NASA and CNES, which made the CALIPSO mission possible. ...
doi:10.1175/2009jtecha1281.1
fatcat:xoy3ibin3nax7jhxqhi3br3r4q
Estimates of North American summertime planetary boundary layer depths derived from space-borne lidar
2012
Journal of Geophysical Research
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The rate of retrieval is greatest over the subtropical oceans (near 100%) where overlying subsidence limits optically thick clouds from growing and attenuating the lidar signal. ...
This paper is a first step in producing a space-based estimate of PBL depth that can be used to compare with and evaluate model-based PBL depth retrievals, inform boundary layer studies, and improve understanding ...
We would like to thank Nikisa Jordan and Mark Vaughan for their assistance with the CALIPSO data and the PBL depth algorithm. ...
doi:10.1029/2012jd017615
fatcat:nh3ttnos3rgvbpsz3yh6vbi3lq
Fully automated analysis of space-based lidar data: an overview of the CALIPSO retrieval algorithms and data products
2004
Laser Radar Techniques for Atmospheric Sensing
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Retrieving the spatial and optical properties of clouds and aerosols from the CALIPSO lidar backscatter data will be confronted by a number of difficulties that are not faced in the analysis of ground-based ...
examples that include feature top and base altitudes, feature type (i.e., cloud or aerosol), and layer optical depths. ...
Specifically, individual lidar returns can contain information on the base and top altitudes of clouds and aerosol layers, and on the altitude of the Earth's surface. ...
doi:10.1117/12.572024
fatcat:ziwky5z6pzenrjqckvw4nzo4pq
Using airborne high spectral resolution lidar data to evaluate combined active plus passive retrievals of aerosol extinction profiles
2010
Journal of Geophysical Research
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1] We derive aerosol extinction profiles from airborne and space-based lidar backscatter signals by constraining the retrieval with column aerosol optical thickness (AOT), with no need to rely on assumptions ...
the Cloud-Aerosol Lidar and Infrared Pathfinder Satellite Observation (CALIPSO) satellite. ...
The CALIPSO and MISR data used here were obtained from the NASA Langley Research Center Atmospheric Science Data Center. ...
doi:10.1029/2009jd012130
fatcat:72kk3unicve5tadbzrhxwugqwy
The CALIPSO mission: spaceborne lidar for observation of aerosols and clouds
2003
Lidar Remote Sensing for Industry and Environment Monitoring III
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The CALIPSO satellite will use an active lidar together with passive instruments to provide vertical profiles of aerosols and clouds and their properties which will help address these uncertainties. ...
Current uncertainties in the effects of aerosols and clouds on the Earth radiation budget limit our understanding of the climate system and the potential for global climate change. ...
Kaufman and Fraser 13 , for example, have used AVHRR observations to deduce statistical relationships between aerosol optical depth, cloud droplet size, and cloud reflectance associated with smoke plumes ...
doi:10.1117/12.466539
fatcat:i3dvseqnn5hljgdblm4uaxu3bu
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