气候变化领域集成服务门户(CCPortal): Quantitative Analysis of Terrain Reflected Solar Radiation in Snow-Covered Mountains: A Case Study in Southeastern Tibetan Plateau

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DOI	10.1029/2020JD034294
	Quantitative Analysis of Terrain Reflected Solar Radiation in Snow-Covered Mountains: A Case Study in Southeastern Tibetan Plateau
	Chu Q.; Yan G.; Qi J.; Mu X.; Li L.; Tong Y.; Zhou Y.; Liu Y.; Xie D.; Wild M.
发表日期	2021
ISSN	2169897X
卷号	126 期号:11
英文摘要	Terrain reflected solar radiation in snow-covered mountains is nonnegligible in investigations of the energy budget. However, it has so far not been investigated thoroughly, especially with regard to the influence of snow cover. Several parameterization approaches have been raised but not yet evaluated in a more uniform and quantitative manner. Based on the three-dimensional (3-D) ray-tracing simulation, we explored the temporal and spatial characteristics of the terrain reflected radiation in 15 domains on the southeastern Tibetan Plateau, and comprehensively evaluated different parameterization approaches. The results indicate that the ratio of reflected radiation to total daily radiation ranges from 0.25% to 10.85% at the scale of 5 × 5 km2 in a winter clear day, and it is 57% higher at noon in spring and autumn due to the higher snow cover fraction. Snow cover not only enhances the magnitude of reflected radiation by increasing surface albedo but also changes the spatial distribution pattern of radiation in partial snow-covered mountains, causing more snow-reflected radiation to be received by the surrounding surfaces. Three forms of terrain configuration factors in common parameterization approaches were evaluated by the ray-tracing model. The complementary of sky view factor shows good consistency with ray-tracing model at domain-averaged scales, with a root mean square error (RMSE) of 2.55 (14%) W/m2, while the other two both underestimate the radiation. The parameterization approach involving the multi-reflection shows better performance with the normalized RMSE decreasing by 5%. However, the uncertainty of it increases with the surface spatial heterogeneity caused by the partial snow cover, especially at high resolution. © 2021. American Geophysical Union. All Rights Reserved.
英文关键词	parameterization approach; ray-tracing model; snow-covered mountains; terrain reflected radiation
语种	英语
来源期刊	Journal of Geophysical Research: Atmospheres
文献类型	期刊论文
条目标识符	http://gcip.llas.ac.cn/handle/2XKMVOVA/185161
作者单位	State Key Laboratory of Remote Sensing Science, Faculty of Geographical Science, Beijing Normal University, Beijing, China; Institute for Atmospheric and Climate Science, ETH Zurich, Zurich, Switzerland; Key Laboratory for Silviculture and Conservation of Ministry of Education, Beijing Forestry University, Beijing, China
推荐引用方式 GB/T 7714	Chu Q.,Yan G.,Qi J.,et al. Quantitative Analysis of Terrain Reflected Solar Radiation in Snow-Covered Mountains: A Case Study in Southeastern Tibetan Plateau[J],2021,126(11).
APA	Chu Q..,Yan G..,Qi J..,Mu X..,Li L..,...&Wild M..(2021).Quantitative Analysis of Terrain Reflected Solar Radiation in Snow-Covered Mountains: A Case Study in Southeastern Tibetan Plateau.Journal of Geophysical Research: Atmospheres,126(11).
MLA	Chu Q.,et al."Quantitative Analysis of Terrain Reflected Solar Radiation in Snow-Covered Mountains: A Case Study in Southeastern Tibetan Plateau".Journal of Geophysical Research: Atmospheres 126.11(2021).