Comparison of unfiltered shortwave radiances measured by CERES from the Aqua and S-NPP or NOAA20 satellites over closely matched ocean or snow sites

Z. Peter Szewczyk; Susan Thomas; Kory J. Priestley

doi:10.1117/12.2636283

28 October 2022 Comparison of unfiltered shortwave radiances measured by CERES from the Aqua and S-NPP or NOAA20 satellites over closely matched ocean or snow sites

Z. Peter Szewczyk, Susan Thomas, Kory J. Priestley

Author Affiliations +

Proceedings Volume 12265, Remote Sensing of Clouds and the Atmosphere XXVII; 1226506 (2022) https://doi.org/10.1117/12.2636283
Event: SPIE Remote Sensing, 2022, Berlin, Germany

Abstract

The focus of this paper is to report results of comparison of unfiltered shortwave radiances measured by CERES scanners while implementing a strategy, referred to as “matched sites targeting”, in which CERES instruments scan at nadir along their respective collocated ground-tracks. This strategy is enabled by similarities in the Suomi-NPP (FM5)/NOAA20 (FM6) and Aqua (FM3) satellite orbits, and a special scan profile available for the CERES scanners. Comparison of collected data in this strategy is done at a footprint level between the instruments(FM5 and FM3 or FM6 and FM3) for specific scene types, determined by their “almost” coincidental ground-tracks. A far more stringent test of the measurement consistency is achieved as averages of 330 collocated nadir samples are compared. Results of the unfiltered shortwave radiance comparison with the focus on clear-sky cases over ocean or snow are based on ES8 or ERBE-like data product using Edition2 for FM5, Edition1 for FM6 and Edition4 for FM3; cloud coverage is verified using MODIS data for FM3 and VIIRS data for FM5/FM6, which are available in SSF products.

Conference Presentation

Citation Download Citation

Z. Peter Szewczyk, Susan Thomas, and Kory J. Priestley "Comparison of unfiltered shortwave radiances measured by CERES from the Aqua and S-NPP or NOAA20 satellites over closely matched ocean or snow sites", Proc. SPIE 12265, Remote Sensing of Clouds and the Atmosphere XXVII, 1226506 (28 October 2022); https://doi.org/10.1117/12.2636283

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