Eighteen years of Aqua MODIS on-orbit operation, calibration, and performance

X. Xiong; E. Aldoretta; A. Angal; T. Chang; X. Geng; D. Link; J. Sun; K. Twedt; A. Wu

doi:10.1117/12.2574995

6 October 2020 Eighteen years of Aqua MODIS on-orbit operation, calibration, and performance

X. Xiong, E. Aldoretta, A. Angal, T. Chang, X. Geng, D. Link, J. Sun, K. Twedt, A. Wu

Proceedings Volume 11530, Sensors, Systems, and Next-Generation Satellites XXIV; 1153013 (2020) https://doi.org/10.1117/12.2574995
Event: SPIE Remote Sensing, 2020, Online Only

Abstract

Aqua MODIS has successfully operated for more than 18 years since its launch in May 2002 and has generated numerous science products in support of studies of the Earth’s system and its changes via a set of geophysical and environmental parameters. On-orbit calibration and characterization activities have played a vital role in maintaining the quality of MODIS data products. In addition to data collected from sensor on-board calibrators (OBC), near-monthly lunar observations and select earth view targets have been used to monitor and characterize on-orbit changes in sensor responses and to derive and update the calibration look-up tables. In this paper, we provide an overview of Aqua MODIS on-orbit operations, calibration activities and approaches, and algorithm improvements and also illustrate the sensor on-orbit performance using examples derived from various calibration sources and targets. We will focus on issues identified from instrument operations and calibrations, such as solar diffuser degradation, electronic crosstalk, variations in the cold focal plane temperatures, and changes in response versus scan-angle. Also discussed in this paper are remaining challenges and future improvements.

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Citation Download Citation

X. Xiong, E. Aldoretta, A. Angal, T. Chang, X. Geng, D. Link, J. Sun, K. Twedt, and A. Wu "Eighteen years of Aqua MODIS on-orbit operation, calibration, and performance", Proc. SPIE 11530, Sensors, Systems, and Next-Generation Satellites XXIV, 1153013 (6 October 2020); https://doi.org/10.1117/12.2574995

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