Residual correlations in the solar diffuser measurements of the MODIS Aqua ocean color bands to the sun yaw angle

Gerhard Meister; Frederick S. Patt; Xiaoxiong Xiong; Junqiang Sun; Xiaobo Xie; Charles R. McClain

doi:10.1117/12.620094

22 August 2005 Residual correlations in the solar diffuser measurements of the MODIS Aqua ocean color bands to the sun yaw angle

Gerhard Meister, Frederick S. Patt, Xiaoxiong Xiong, Junqiang Sun, Xiaobo Xie, Charles R. McClain

Author Affiliations +

Proceedings Volume 5882, Earth Observing Systems X; 58820V (2005) https://doi.org/10.1117/12.620094
Event: Optics and Photonics 2005, 2005, San Diego, California, United States

Abstract

The Moderate Resolution Imaging Spectroradiometer (MODIS) on the Earth Observing System (EOS) Aqua platform uses biweekly solar diffuser measurements for the radiometric calibration of the ocean color bands. The solar angle relative to the spacecraft changes throughout the year. This document describes correlations in the solar diffuser measurements of the ocean color bands to the sun yaw angle. The functional form of the correlations depends on the position of the respective band and detector on the focal plane. The proposed corrections often exceed 0.5% (peak-to-peak). The most likely source of the correlations is the radiometric characterization of the solar diffuser screen. These results show the importance of a complete prelaunch characterization for spaceborne sensors regarding the radiometric calibration.

Citation Download Citation

Gerhard Meister, Frederick S. Patt, Xiaoxiong Xiong, Junqiang Sun, Xiaobo Xie, and Charles R. McClain "Residual correlations in the solar diffuser measurements of the MODIS Aqua ocean color bands to the sun yaw angle", Proc. SPIE 5882, Earth Observing Systems X, 58820V (22 August 2005); https://doi.org/10.1117/12.620094

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