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Proceedings Paper

Updates of MODIS on-orbit calibration uncertainty assessments
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Paper Abstract

The Moderate Resolution Imaging Spectroradiometer (MODIS) instruments have successfully operated for more than 17 and 15 years, respectively, on-board the NASA’s Earth Observing System (EOS) Terra and Aqua spacecraft. MODIS level 1B (L1B) data products include top of the atmosphere (TOA) reflectance factors for the reflective solar bands (RSB) and radiances for both the RSB and the thermal emissive bands (TEB), and their associated uncertainty indices (UI) at a pixel-by-pixel level. This paper provides a brief review of MODIS L1B calibration algorithms, including improvements made in recent years. It presents an update of sensor calibration uncertainty assessments with a focus on several new contributors resulting from changes in sensor characteristics and on-orbit calibration approaches and the impact due to these changes on the L1B data quality. Also discussed in this paper are potential changes that could be made to continue improving the quality of MODIS L1B uncertainty product.

Paper Details

Date Published: 5 September 2017
PDF: 11 pages
Proc. SPIE 10402, Earth Observing Systems XXII, 104020M (5 September 2017); doi: 10.1117/12.2276305
Show Author Affiliations
Xiaoxiong Xiong, NASA Goddard Space Flight Ctr. (United States)
Amit Angal, Science Systems and Applications, Inc. (United States)
William Barnes, Univ. of Maryland, Baltimore County (United States)
Hongda Chen, Science Systems and Applications, Inc. (United States)
Vincent Chiang, Science Systems and Applicaitons, Inc. (United States)
Xu Geng, Science Systems and Applications, Inc. (United States)
Yonghong Li, Science Systems and Applications, Inc. (United States)
Kevin Twedt, Science Systems and Applications, Inc. (United States)
Zhipeng Wang, Science Systems and Applications, Inc. (United States)
Truman Wilson, Science Systems and Applications, Inc. (United States)
Aisheng Wu, Science Systems and Applications, Inc. (United States)


Published in SPIE Proceedings Vol. 10402:
Earth Observing Systems XXII
James J. Butler; Xiaoxiong (Jack) Xiong; Xingfa Gu, Editor(s)

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