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Proceedings Paper

Astronomical solar radiation simulation based on DEM in Wuyishan mountainous areas
Author(s): Shaogang Wang; Guojin He; Dingsheng Liu; Xiaoqin Wang
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Paper Abstract

Digital Elevation Models (DEM) data (90mx90m) reflected by the NASA Shuttle Radar Topography Mission (SRTM) are used as basic information source to overlay digital slope models and digital aspect models, which are applicable to the mountainous terrain of astronomical solar radiation distributed model. This paper uses ray-tracing method and integral by subparagraph to calculate the conditions of terrain shading information, and through an integral way to make a visualization of monthly astronomical solar radiation (ASR). The result shows that the geographical and topographical factors do visible effect to the spatial distribution of astronomical solar radiation over Wuyishan area, especially in January, it does the most obvious effect to terrain shading, while in July it does the lightest effect to terrain shading. This method can accurately reflect regional differences of solar radiation, and through accumulating daily solar radiation in the region, we can obtain the total amount of solar radiation in every month of the year. This result can provide prerequisite conditions as an important reference and then be useful to biomass estimating of vegetation, agricultural production, climatic resources development and exploiture.

Paper Details

Date Published: 29 December 2008
PDF: 8 pages
Proc. SPIE 7285, International Conference on Earth Observation Data Processing and Analysis (ICEODPA), 728557 (29 December 2008); doi: 10.1117/12.813355
Show Author Affiliations
Shaogang Wang, Ctr. for Earth Observation and Digital Earth (China)
Institute of Remote Sensing Applications (China)
Graduate Univ. of the Chinese Academy of Sciences (China)
Guojin He, Ctr. for Earth Observation and Digital Earth (China)
Dingsheng Liu, Ctr. for Earth Observation and Digital Earth (China)
Xiaoqin Wang, Fuzhou Univ. (China)

Published in SPIE Proceedings Vol. 7285:
International Conference on Earth Observation Data Processing and Analysis (ICEODPA)
Deren Li; Jianya Gong; Huayi Wu, Editor(s)

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