Comparison of unfiltered CERES shortwave radiances measured in the minor plane over snow/ice of Greenland during summer solstices

Z. Peter Szewczyk; G. Louis Smith; Janet L. Daniels; Kory J. Priestley

doi:10.1117/12.2678565

19 October 2023 Comparison of unfiltered CERES shortwave radiances measured in the minor plane over snow/ice of Greenland during summer solstices

Z. Peter Szewczyk, G. Louis Smith, Janet L. Daniels, Kory J. Priestley

Author Affiliations +

Proceedings Volume 12730, Remote Sensing of Clouds and the Atmosphere XXVIII; 127300B (2023) https://doi.org/10.1117/12.2678565
Event: SPIE Remote Sensing, 2023, Amsterdam, Netherlands

Abstract

A purpose of this paper is to present comparison of unfiltered radiances measured by CERES scanners when their scanning is aligned in the plane orthogonal to the solar plane and targeting Greenland around the time of summer solstice. Since the summer solstice in 2002, FM1 on Terra and FM4/FM3 on Aqua have been scanning in the minor plane for the month of June to collect comparison data. Measurements of FM5 on S-NPP and FM6 on NOAA20 have been added to this dataset starting in 2012 and 2018, respectively, with the data collection extended from May to July due to orbit characteristics. This unique dataset presents one-of-a-kind opportunity to compare radiances measured from four different platforms to assess CERES calibrations, particularly the consistency of their shortwave channel, as the solar zenith angles are the smallest for high latitudes producing relatively strong SW signal over ice/snow/clouds of Greenland. Results of comparison reported in this paper will be used in work to release new and updated versions, Edition 5, of ERBE-like (ES8) data products, for Terra and Aqua scanners.

Citation Download Citation

Z. Peter Szewczyk, G. Louis Smith, Janet L. Daniels, and Kory J. Priestley "Comparison of unfiltered CERES shortwave radiances measured in the minor plane over snow/ice of Greenland during summer solstices", Proc. SPIE 12730, Remote Sensing of Clouds and the Atmosphere XXVIII, 127300B (19 October 2023); https://doi.org/10.1117/12.2678565

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