气候变化领域集成服务门户(CCPortal): Precipitation correction and reconstruction for streamflow simulation based on 262 rain gauges in the upper Brahmaputra of southern Tibetan Plateau

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DOI	10.1016/j.jhydrol.2020.125484
	Precipitation correction and reconstruction for streamflow simulation based on 262 rain gauges in the upper Brahmaputra of southern Tibetan Plateau
	Sun, He; Su, Fengge
通讯作者	Su, FG (通讯作者)
发表日期	2020
ISSN	0022-1694
EISSN	1879-2707
卷号	590
英文摘要	Precipitation is the key driver of terrestrial hydrological cycle and the most important atmospheric input to land surface hydrological models. However, due to high elevation, complex terrain and inaccessibility, direct meteorological observations are either sparse or nonexistent in many remote parts of Tibetan Plateau (TP), posting a great challenge in hydrological modelling studies in the TP. This is especially the case for the Upper Brahmaputra (UB) basin in southern TP. In this work, a gridded daily precipitation dataset with a spatial resolution of 10 x 10 km for 1961-2016 is reconstructed for the entire UB by combining orographic and linear corrections of China Meteorological Administration (CMA) and Global Land Data Assimilation Systems (GLDAS) data based on 262 rain gauges. The inverse evaluation of the reconstructed precipitation with a glacier-hydrology model demonstrates the accuracy and rationality of the reconstructed precipitation for hydrological modeling in the UB. The reconstructed precipitation greatly improved the precipitation estimates in the UB with the basin-averaged mean annual precipitation increased from 465 mm in the original data to 709 mm in the reconstructed data for 1961-2016. The monsoon-dominated UB basin exhibits an overall negative precipitation vertical gradient with apparent orographic effects only appearing at local scales or in small basins. Basin size and climate control should be considered when using the orographic correction approach to derive high mountain precipitation on the Tibetan Plateau. The improved precipitation estimates for the UB may best represent the real precipitation amount thus far in the UB basin and largely contribute to hydrological simulation and prediction studies in the basin.
关键词	HIGH-MOUNTAIN PRECIPITATION UPSTREAM RIVER-BASINS CLIMATE-CHANGE HIGH ASIA ANALYSIS TMPA GLACIER SATELLITE MODEL WATER PRODUCTS
英文关键词	Precipitation correction; Precipitation gradient; Hydrological modelling; Upper Brahmaputra; Tibetan Plateau
语种	英语
WOS研究方向	Engineering ; Geology ; Water Resources
WOS类目	Engineering, Civil ; Geosciences, Multidisciplinary ; Water Resources
WOS记录号	WOS:000599754500189
来源期刊	JOURNAL OF HYDROLOGY
来源机构	中国科学院青藏高原研究所
文献类型	期刊论文
条目标识符	http://gcip.llas.ac.cn/handle/2XKMVOVA/259743
推荐引用方式 GB/T 7714	Sun, He,Su, Fengge. Precipitation correction and reconstruction for streamflow simulation based on 262 rain gauges in the upper Brahmaputra of southern Tibetan Plateau[J]. 中国科学院青藏高原研究所,2020,590.
APA	Sun, He,&Su, Fengge.(2020).Precipitation correction and reconstruction for streamflow simulation based on 262 rain gauges in the upper Brahmaputra of southern Tibetan Plateau.JOURNAL OF HYDROLOGY,590.
MLA	Sun, He,et al."Precipitation correction and reconstruction for streamflow simulation based on 262 rain gauges in the upper Brahmaputra of southern Tibetan Plateau".JOURNAL OF HYDROLOGY 590(2020).