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Proceedings Paper

Retrieval of atmospheric water content and transmittance computation of thermal bands based on MODTRAN
Author(s): Qian Cheng; Xiuju Wu
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Paper Abstract

As an EOS instrument with 36 bands, MODIS is very useful because of its global coverage, radiometric resolution and dynamic ranges as well as accurate calibration in multiple thermal infrared bands designed for retrievals of sea surface temperature (SST), land surface temperature (LST) and atmospheric properties. The paper discusses the influence of main parameters such as water content density on atmospheric transmittance and radiance. The relationships between the atmospheric transmittance and different atmospheric height, and different atmospheric water content were analyzed. This paper introduces and derives the algorithm about retrieving water content of atmosphere from MODIS data. The retrieving result was analyzed and then MODTRAN was employed to simulate the relationship between the water content of atmosphere and the transmittance of MODIS bands 31 and 32. The technique has great value to get some parameters timely with accuracy to every pixel and to monitor the global change.

Paper Details

Date Published: 8 January 2008
PDF: 8 pages
Proc. SPIE 6835, Infrared Materials, Devices, and Applications, 68351C (8 January 2008); doi: 10.1117/12.754117
Show Author Affiliations
Qian Cheng, Zhejiang Gongshang Univ. (China)
Xiuju Wu, Zhejiang Gongshang Univ. (China)

Published in SPIE Proceedings Vol. 6835:
Infrared Materials, Devices, and Applications
Yi Cai; Haimei Gong; Jean-Pierre Chatard, Editor(s)

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