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9 October 2018 Strategies for shortwave radiances comparison of CERES instruments aboard the JPSS1 and Terra/Aqua satellites
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The main focus of this paper is a comparison of unfiltered radiances measured by CERES instruments operating on three different platforms, namely the JPSS1 or N20, Terra and Aqua satellites. Data for the comparison have been continuously collected since Flight Model 6 or FM6 aboard the JPSS1 started its science mission in January of 2018. Three different strategies have been devised for the purpose of comparing CERES scanners. Using a special scanning mode, viewing geometries of instruments (FM6 and FM3, and also FM6 and FM1) can be matched to enable comparison at the unfiltered radiance level, and to provide a large data set for comparing the shotwave channel. In addition, using a special elevation scan profile on FM6 and FM3, an unprecedented high precision dataset can be collected for a more stringent test of the consistency between the two instruments for selected scene types. Statistics are computed for different scene types, and a confidence test is applied to gridded averages to show the existing consistency between measurements taken from the two different platforms. Preliminary results of the unfiltered radiance comparison are based on ES8s or ERBE-like data products; an Edition1-CV for FM6, and Edition4 for FM1 and FM3.
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Z. Peter Szewczyk, Susan Thomas, and Kory J. Priestley "Strategies for shortwave radiances comparison of CERES instruments aboard the JPSS1 and Terra/Aqua satellites", Proc. SPIE 10786, Remote Sensing of Clouds and the Atmosphere XXIII, 1078604 (9 October 2018);

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