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Proceedings Paper

JPSS-1 VIIRS prelaunch RSB/DNB RVS characterization and water vapor correction
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Paper Abstract

The accuracy of pre-launch VIIRS response versus scan angle (RVS) characterization is vitally important to the quality of calibrated radiance products. The RVS correct the optical system’s scan angle dependency with respect to the calibrator scan angle. In this document, we describe the methodology used in JPSS-1 RSB RVS characterization and the efficacy of MODTRAN5 in water vapor correction. The RVS is characterized using a 2nd order polynomial fit over the measured scan angles. The results show high fitting accuracy for all bands except for M9 due to water vapor absorption. To improve M9 RVS, MODTRAN®5 is used to correction water vapor absorption variation during the RVS measurements. This correction greatly reduced M9 RVS characterization uncertainty with a RVS that is up to 0.4% difference compared with RVS prior to water vapor correction.

Paper Details

Date Published: 8 September 2015
PDF: 9 pages
Proc. SPIE 9607, Earth Observing Systems XX, 96071R (8 September 2015); doi: 10.1117/12.2196148
Show Author Affiliations
Shihyan Lee, ERT Corp. (United States)
NOAA National Environmental Satellite, Data, and Information Service (United States)
Changyong Cao, NOAA National Environmental Satellite, Data, and Information Service (United States)

Published in SPIE Proceedings Vol. 9607:
Earth Observing Systems XX
James J. Butler; Xiaoxiong (Jack) Xiong; Xingfa Gu, Editor(s)

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