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Proceedings Paper

Satellite estimation of photosynthetically active radiation in Jiangxi Province
Author(s): Shihua Li; Zheng Niu; Wenbo Xu
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Paper Abstract

Incident photosynthetically active radiation (PAR) is a key variable needed by almost all terrestrial ecosystem models. Unfortunately, the current incident PAR products estimated from remotely sensed data at spatial and temporal resolutions are not sufficient for carbon cycle modeling and various applications. In this study, the author improved Eck and Dye model which is a PAR simulating model using ultraviolet reflectance. The advantage of the ultraviolet over existing visible band approaches to estimating insolation is the improved ability to discriminate clouds from high-albedo background surfaces. Ultraviolet spectral reflectance data from the Total Ozone Mapping Spectrometer(TOMS) was used to test the approach for Qianyanzhou station, southeast of China. Estimates of 8-day composition total incident PAR from the satellite technique differed from measurement values by higher than 3.47%. The incident PAR over Jiangxi Province was mapped in 2003 and 2004. The results indicate that this approach can produce reasonable PAR product and is suitable for regional and global applications, although more quantitative validation activities are still needed.

Paper Details

Date Published: 14 November 2007
PDF: 6 pages
Proc. SPIE 6790, MIPPR 2007: Remote Sensing and GIS Data Processing and Applications; and Innovative Multispectral Technology and Applications, 67902D (14 November 2007); doi: 10.1117/12.750531
Show Author Affiliations
Shihua Li, Univ. of Electronic Science and Technology of China (China)
State Key Lab. of Remote Sensing Science (China)
Zheng Niu, State Key Lab. of Remote Sensing Science (China)
Wenbo Xu, Univ. of Electronic Science and Technology of China (China)


Published in SPIE Proceedings Vol. 6790:
MIPPR 2007: Remote Sensing and GIS Data Processing and Applications; and Innovative Multispectral Technology and Applications

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