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contributor authorGoldin, D.
contributor authorLukashin, C.
date accessioned2017-06-09T17:26:19Z
date available2017-06-09T17:26:19Z
date copyright2016/03/01
date issued2015
identifier issn0739-0572
identifier otherams-85276.pdf
identifier urihttp://onlinelibrary.yabesh.ir/handle/yetl/4228705
description abstractolarization effects bias the performance of various existing passive spaceborne instruments, such as MODIS and the Visible Infrared Imaging Radiometer Suite (VIIRS), as well as geostationary imagers. It is essential to evaluate and correct for these effects in order to achieve the required accuracy of the total reflectance at the top of the atmosphere.In addition to performing highly accurate decadal climate change observations, one of the objectives of the Climate Absolute Radiance and Refractivity Observatory (CLARREO) mission recommended by the National Research Council for launch by NASA is to provide the on-orbit intercalibration with the imagers over a range of parameters, including polarization. Whenever the on-orbit coincident measurements are not possible, CLARREO will provide the polarization distributions constructed using the adding?doubling radiative transfer model (ADRTM), which will cover the entire reflected solar spectrum. These ADRTM results need to be validated using real data. To this end the empirical polarization distribution models (PDMs) based on the measurements taken by the Polarization and Anisotropy of Reflectances for Atmospheric Sciences Coupled with Observations from a Lidar (PARASOL) mission were developed. Examples of such PDMs for the degree of polarization and the angle of linear polarization for the cloudless ocean scenes are shown here. These PDMs are compared across the three available PARASOL polarization bands, and the effect of aerosols on them is examined. The PDM-derived dependence of the reflectance uncertainty on the degree of polarization for imagers, such as MODIS or VIIRS, after their intercalibration with the CLARREO instrument is evaluated. The influence of the aerosols on the reflectance uncertainty is examined. Finally, the PDMs for the angle of linear polarization is cross-checked against the single-scattering approximation.
publisherAmerican Meteorological Society
titleEmpirical Polarization Distribution Models for CLARREO-Imager Intercalibration
typeJournal Paper
journal volume33
journal issue3
journal titleJournal of Atmospheric and Oceanic Technology
identifier doi10.1175/JTECH-D-15-0165.1
journal fristpage439
journal lastpage451
treeJournal of Atmospheric and Oceanic Technology:;2015:;volume( 033 ):;issue: 003
contenttypeFulltext


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