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	Comprehensive precipitation evaluation of trmm 3b42 with dense rain gauge networks in a mid-latitude basin, northeast, china
	Cai, Yancong1,2; Jin, Changjie1; Wang, Anzhi1; Guan, Dexin1; Wu, Jiabing1; Yuan, Fenghui1,2; Xu, Leilei1,2
刊名	Theoretical and applied climatology
	2016-11-01
卷号	126期号:3-4页码:659-671
ISSN号	0177-798X
DOI	10.1007/s00704-015-1598-4
通讯作者	Wang, anzhi(waz@iae.ac.cn)
英文摘要	Knowledge on understanding quality of the tropical rainfall measuring mission (trmm) 3b42 v7 dataset over mid-high latitudes regions is limited, which restricts its potential application in climate and hydrology fields. this study focuses on giving a detailed evaluation of the accuracy of 3b42 with observation data obtained from a high density rain gauge network over the hun-tai basin in liaoning province, northeast china during 1998-2006. several accuracy statistics are used to evaluate it quantitatively in terms of error of precipitation amount and ability in detecting the occurrence of precipitation events. comparative results for three timescales (daily, monthly, and annual scale) at the basin scale show that 3b42 is more suitable for analyzing precipitation at large timescale, especially monthly scale (strong correlation of 0.93) due to the use of monthly rain gauge observation for bias correction in producing 3b42. yet, 3b42 generally overestimates precipitation at all three timescales, especially the most serious degree of overestimation at daily scale with the absolute bias of 123.94 % and light to moderate rain events (1-20 mm). moreover, the performance is influenced by topography, and 3b42 has a larger error of precipitation amount but has a better detection of the occurrence of precipitation events over high-altitude region than those over low-altitude region. also, accuracy of 3b42 decreases with precipitation intensity, it suggests that 3b42 is incapable of capturing heavy precipitation events with desirable accuracy for the study on extreme precipitation events. in following works, overestimation characteristic should be weaken by improving satellite-based precipitation estimations algorithms and developing more effective bias correction techniques, it is important for streamflow simulations using 3b42 as forcing data over ungauged regions.
WOS关键词	GLOBAL LAND PRECIPITATION ; ANALYSIS TMPA ; SOIL-MOISTURE ; SATELLITE ; PRODUCTS ; REGION ; RADAR ; INDEX ; SIMULATION ; AFRICA
WOS研究方向	Meteorology & Atmospheric Sciences
WOS类目	Meteorology & Atmospheric Sciences
语种	英语
出版者	SPRINGER WIEN
WOS记录号	WOS:000386071900019
内容类型	期刊论文
URI标识	http://www.corc.org.cn/handle/1471x/2374948
专题	中国科学院大学
通讯作者	Wang, Anzhi
作者单位	1.Chinese Acad Sci, Inst Appl Ecol, State Key Lab Forest & Soil Ecol, Shenyang 110164, Peoples R China 2.Univ Chinese Acad Sci, Beijing 100049, Peoples R China
推荐引用方式 GB/T 7714	Cai, Yancong,Jin, Changjie,Wang, Anzhi,et al. Comprehensive precipitation evaluation of trmm 3b42 with dense rain gauge networks in a mid-latitude basin, northeast, china[J]. Theoretical and applied climatology,2016,126(3-4):659-671.
APA	Cai, Yancong.,Jin, Changjie.,Wang, Anzhi.,Guan, Dexin.,Wu, Jiabing.,...&Xu, Leilei.(2016).Comprehensive precipitation evaluation of trmm 3b42 with dense rain gauge networks in a mid-latitude basin, northeast, china.Theoretical and applied climatology,126(3-4),659-671.
MLA	Cai, Yancong,et al."Comprehensive precipitation evaluation of trmm 3b42 with dense rain gauge networks in a mid-latitude basin, northeast, china".Theoretical and applied climatology 126.3-4(2016):659-671.

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