中国科学院机构知识库网格
Chinese Academy of Sciences Institutional Repositories Grid
Deriving the slope-mean shielded astronomical solar radiation spectrum and slope-mean possible sunshine duration spectrum over the Loess Plateau

文献类型:期刊论文

作者Chen Nan
刊名JOURNAL OF MOUNTAIN SCIENCE
出版日期2020
卷号17期号:1页码:133-146
ISSN号1672-6316
关键词Digital elevation model Shielded extraterrestrial solar radiation Spectrum Possible Sunshine duration Slope Loess Plateau
DOI10.1007/s11629-018-5246-1
文献子类Article
英文摘要Solar radiation is often shielded by terrain relief, especially in mountainous areas, before reaching the surface of the Earth. The objective of this paper is to study the spatial structures of the shielded astronomical solar radiation (SASR) and the possible sunshine duration (PSD) over the Loess Plateau. To this end, we chose six test areas representing different landforms over the Loess Plateau and the software package of Matlab was used as the main computing platform. In each test area, 5-m-resolution digital elevation model established from 1:10,000 scale topographic maps was used to compute the corresponding slope, SASR and PSD. Then, we defined the concepts of the slope-mean SASR spectrum and the slope-mean PSD spectrum, and proposed a method to extract them from the computed slope, SASR and PSD over rectangular analysis windows. Using this method, we found both spectrums in a year or in a season for each of the four seasons in the six test areas. Each spectrum was found only when the area of the corresponding rectangular analysis window was greater than the corresponding stable area of the spectrum. The values of the two spectrums decreased when the slope increased. Furthermore, the values of the stable areas of the spectrums in a year or in a season were positively correlated with the variable coefficients of the slope or the profile curvature. The values of the stable areas of the two spectrums in a year or in a season may represent the minimum value of test areas for corresponding future research on the spatial structures of the SASR or PSD. All the findings herein suggest that the spatial structures of the PSD and the SASR are caused by the interactions between solar radiation and terrain relief and that the method for extracting either spectrum is effective for detecting their spatial structures. This study may deepen our understanding of the spatial structure of solar radiation and help us further explore the distribution of solar energy in mountainous regions.
电子版国际标准刊号1993-0321
语种英语
WOS记录号WOS:000512076900010
源URL[http://ir.imde.ac.cn/handle/131551/46723]  
专题Journal of Mountain Science_Journal of Mountain Science-2020_Vol17 No.1
推荐引用方式
GB/T 7714
Chen Nan. Deriving the slope-mean shielded astronomical solar radiation spectrum and slope-mean possible sunshine duration spectrum over the Loess Plateau[J]. JOURNAL OF MOUNTAIN SCIENCE,2020,17(1):133-146.
APA Chen Nan.(2020).Deriving the slope-mean shielded astronomical solar radiation spectrum and slope-mean possible sunshine duration spectrum over the Loess Plateau.JOURNAL OF MOUNTAIN SCIENCE,17(1),133-146.
MLA Chen Nan."Deriving the slope-mean shielded astronomical solar radiation spectrum and slope-mean possible sunshine duration spectrum over the Loess Plateau".JOURNAL OF MOUNTAIN SCIENCE 17.1(2020):133-146.

入库方式: OAI收割

来源:成都山地灾害与环境研究所

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