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Proceedings Paper

Adjustments to the MODIS Terra radiometric calibration and polarization sensitivity in the 2010 reprocessing
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Paper Abstract

The Moderate-Resolution Imaging Spectroradiometer (MODIS) on NASA's Earth Observing System (EOS) satellite Terra provides global coverage of top-of-atmosphere (TOA) radiances that have been successfully used for terrestrial and atmospheric research. The MODIS Terra ocean color products, however, have been compromised by an inadequate radiometric calibration at the short wavelengths. The Ocean Biology Processing Group (OBPG) at NASA has derived radiometric corrections using ocean color products from the SeaWiFS sensor as truth fields. In the R2010.0 reprocessing, these corrections have been applied to the whole mission life span of 10 years. This paper presents the corrections to the radiometric gains and to the instrument polarization sensitivity, demonstrates the improvement to the Terra ocean color products, and discusses issues that need further investigation. Although the global averages of MODIS Terra ocean color products are now in excellent agreement with those of SeaWiFS and MODIS Aqua, and image quality has been significantly improved, the large corrections applied to the radiometric calibration and polarization sensitivity require additional caution when using the data.

Paper Details

Date Published: 13 September 2011
PDF: 12 pages
Proc. SPIE 8153, Earth Observing Systems XVI, 815308 (13 September 2011); doi: 10.1117/12.891787
Show Author Affiliations
Gerhard Meister, NASA Goddard Space Flight Ctr. (United States)
Bryan A. Franz, NASA Goddard Space Flight Ctr. (United States)

Published in SPIE Proceedings Vol. 8153:
Earth Observing Systems XVI
James J. Butler; Xiaoxiong Xiong; Xingfa Gu, Editor(s)

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