气候变化领域集成服务门户(CCPortal): Spatial interpolation of daily precipitation based on modified ADW method for gauge-scarce mountainous regions: A case study in the Shiyang River Basin

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DOI	10.1016/j.atmosres.2020.105167
	Spatial interpolation of daily precipitation based on modified ADW method for gauge-scarce mountainous regions: A case study in the Shiyang River Basin
	Zhang G.; Su X.; Ayantobo O.O.; Feng K.; Guo J.
发表日期	2021
ISSN	0169-8095
卷号	247
英文摘要	Precipitation is among the major drivers in hydrological modeling, and spatial rainfall distribution is essential for understanding ecohydrological processes. Inaccurate rainfall spatial surface is the main source of model uncertainty, especially where rainfall gauges are sparse in mountainous areas and, where the spatial precipitation distribution is closely related to elevation. This study proposes a daily rainfall interpolation method based on the Angular Distance Weighting (ADW) method considering the precipitation–elevation relationship and topographic effects derived from observed data. Furthermore, the method is used to generate daily rainfall in the Shiyang River basin from 1984 to 2012. Cross-validation results indicate that this method is rational, where the annual mean relative errors (MRE) are less than 30% at the majority of the stations. The rationality of the interpolated precipitation data at high altitude regions, where limited rainfall gauges exist, is also evaluated using a comparison of the observed and simulated runoff modeled by the Soil & Water Assessment Tool (SWAT). The SWAT model with interpolated rainfall could generate better-simulated discharges than that with observed rainfall data. The results demonstrate that the proposed method could provide an accurate spatial distribution of daily precipitation, which can sufficiently drive the hydrological model. © 2020 Elsevier B.V.
英文关键词	Daily rainfall; Hydrological modeling; Interpolation; Modified ADW; Mountainous regions
语种	英语
scopus关键词	Digital storage; Gages; Interpolation; Rain; Uncertainty analysis; Watersheds; Daily precipitations; Hydrological modeling; Interpolated precipitation; Precipitation distribution; Shiyang river basins; Simulated discharges; Spatial interpolation; Topographic effects; Spatial distribution; diurnal variation; elevation; hydrological modeling; interpolation; mountain region; precipitation (climatology); rainfall; raingauge; soil and water assessment tool; spatial distribution; China; Gansu; Shiyang Basin
来源期刊	Atmospheric Research
文献类型	期刊论文
条目标识符	http://gcip.llas.ac.cn/handle/2XKMVOVA/141761
作者单位	College of Water Resources and Architectural Engineering, Northwest A & F University, Yangling, 712100, China; Key Laboratory for Agricultural Soil and Water Engineering in Arid Area of Ministry of Education, Northwest A & F University, Yangling, 712100, China; Department of Water Resources Management and Agricultural-Meteorology, Federal University of Agriculture, PMB 2240, Abeokuta, 110282, Nigeria; State Key Laboratory of Hydroscience and Engineering, Department of Hydraulic Engineering, Tsinghua University, Beijing, 100084, China; Chongqing University of Science and Technology, College of Mathematics and Physics, Chongqing, 401331, China
推荐引用方式 GB/T 7714	Zhang G.,Su X.,Ayantobo O.O.,et al. Spatial interpolation of daily precipitation based on modified ADW method for gauge-scarce mountainous regions: A case study in the Shiyang River Basin[J],2021,247.
APA	Zhang G.,Su X.,Ayantobo O.O.,Feng K.,&Guo J..(2021).Spatial interpolation of daily precipitation based on modified ADW method for gauge-scarce mountainous regions: A case study in the Shiyang River Basin.Atmospheric Research,247.
MLA	Zhang G.,et al."Spatial interpolation of daily precipitation based on modified ADW method for gauge-scarce mountainous regions: A case study in the Shiyang River Basin".Atmospheric Research 247(2021).