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Proceedings Paper

Status of Terra MODIS operation, calibration, and performance
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Paper Abstract

Since launch in December 1999, Terra MODIS has successfully operated for nearly 15 years, making continuous observations. Data products derived from MODIS observations have significantly contributed to a wide range of studies of key geophysical parameters of the earth’s eco-system of land, ocean, and atmosphere, and their changes over time. The quality of MODIS data products relies on the dedicated effort to monitor and sustain instrument health and operation, to calibrate and update sensor parameters and properties, and to improve calibration algorithms. MODIS observations are made in 36 spectral bands, covering wavelengths from visible to long-wave infrared. The reflective solar bands (1-19 and 26) are primarily calibrated by a solar diffuser (SD) panel and regularly scheduled lunar observations. The thermal emissive bands (20-25 and 27- 36) calibration is referenced to an on-board blackbody (BB) source. On-orbit changes in the sensor spectral and spatial characteristics are monitored by a spectroradiometric calibration assembly (SRCA). This paper provides an overview of Terra MODIS on-orbit operation and calibration activities and implementation strategies. It presents and summarizes sensor on-orbit performance using nearly 15 years of data from its telemetry, on-board calibrators, and lunar observations. Also discussed in this paper are changes in sensor characteristics, corrections applied to maintain MODIS level 1B (L1B) data quality, and efforts for future improvements.

Paper Details

Date Published: 2 October 2014
PDF: 12 pages
Proc. SPIE 9218, Earth Observing Systems XIX, 92180O (2 October 2014); doi: 10.1117/12.2062645
Show Author Affiliations
Xiaoxiong J. Xiong, NASA Goddard Space Flight Ctr. (United States)
Brian N. Wenny, Sigma Space Corp. (United States)
Aisheng Wu, Sigma Space Corp. (United States)
Amit Angal, Science Systems and Applications, Inc. (United States)
Xu Geng, Sigma Space Corp. (United States)
Hongda Chen, Sigma Space Corp. (United States)
Jennifer L. Dodd, Sigma Space Corp. (United States)
Daniel O. Link, Sigma Space Corp. (United States)
Sriharsha Madhavan, Science Systems and Applications, Inc. (United States)
Na Chen, Sigma Space Corp. (United States)
Yonghong Li, Sigma Space Corp. (United States)
Sean Iacangelo, Sigma Space Corp. (United States)
William L. Barnes, Univ. of Maryland, Baltimore County (United States)
Vince Salomonson, The Univ. of Utah (United States)

Published in SPIE Proceedings Vol. 9218:
Earth Observing Systems XIX
James J. Butler; Xiaoxiong (Jack) Xiong; Xingfa Gu, Editor(s)

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