29 December 2008 Astronomical solar radiation simulation based on DEM in Wuyishan mountainous areas
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Proceedings Volume 7285, International Conference on Earth Observation Data Processing and Analysis (ICEODPA); 728557 (2008) https://doi.org/10.1117/12.813355
Event: International Conference on Earth Observation Data Processing and Analysis, 2008, Wuhan, China
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.
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Shaogang Wang, Guojin He, Dingsheng Liu, Xiaoqin Wang, "Astronomical solar radiation simulation based on DEM in Wuyishan mountainous areas", Proc. SPIE 7285, International Conference on Earth Observation Data Processing and Analysis (ICEODPA), 728557 (29 December 2008); doi: 10.1117/12.813355; https://doi.org/10.1117/12.813355
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