干旱区生态环境知识资源中心(Arid): How do GPM IMERG precipitation estimates perform as hydrological model forcing? Evaluation for 300 catchments across Mainland China

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DOI	10.1016/j.jhydrol.2019.03.042
	How do GPM IMERG precipitation estimates perform as hydrological model forcing? Evaluation for 300 catchments across Mainland China
	Jiang, Liguang; Bauer-Gottwein, Peter
通讯作者	Jiang, Liguang
来源期刊	JOURNAL OF HYDROLOGY
ISSN	0022-1694
EISSN	1879-2707
出版年	2019
卷号	572 页码:486-500
英文摘要	Accurate precipitation estimates are essential for reliable hydrological simulations of fluxes and states. Satellite precipitation products have been widely used for hydrological applications, especially for ungauged regions. The Global Precipitation Measurement (GPM) product is starting to provide a new generation of precipitation estimates. This work first evaluates several GPM Integrated Multi-satellite Retrievals (IMERG) against gauge-based precipitation over Mainland China for a two-year period (2016-2017), and then explores the feasibility of using GPM to force a lumped hydrological model over 300 catchments of varying size and climate. The analysis indicates that IMERG Final run estimates (gauge-adjusted) agree well with gauge-based precipitation at daily scale, while IMERG Early run estimates (near-real time without gauge adjustments) are consistently lower than the rain gauge records. Nevertheless, both Final run and Early run estimates are slightly better than TRMM 3B42 estimates in terms of rainfall detection skill. Moreover, all three products show better skill over humid regions than over high elevation zones. When used as hydrological model forcing, IMERG Final and Early estimates provide comparable performances to gauge-based precipitation. However, TRMM 3B42 performs relatively poor in terms of hydrological simulation. Moreover, models generally perform better in humid than in arid areas for all three products. The evaluation sheds light on how IMERG-driven hydrological predictions perform in different regions across China. The findings also indicate the potential of IMERG Early run for flood forecasting and Final run for climatological/hydrological modeling in ungauged or poorly gauged basins.
英文关键词	Satellite precipitation products GPM IMERG Rainfall-runoff modeling HBV China
类型	Article
语种	英语
国家	Denmark
开放获取类型	Green Submitted
收录类别	SCI-E
WOS记录号	WOS:000467891900039
WOS关键词	INTEGRATED MULTISATELLITE RETRIEVALS ; SATELLITE RAINFALL PRODUCTS ; ANALYSIS TMPA ; TRMM ; ERROR
WOS类目	Engineering, Civil ; Geosciences, Multidisciplinary ; Water Resources
WOS研究方向	Engineering ; Geology ; Water Resources
资源类型	期刊论文
条目标识符	http://119.78.100.177/qdio/handle/2XILL650/217140
作者单位	Tech Univ Denmark, Dept Environm Engn, DK-2800 Lyngby, Denmark
推荐引用方式 GB/T 7714	Jiang, Liguang,Bauer-Gottwein, Peter. How do GPM IMERG precipitation estimates perform as hydrological model forcing? Evaluation for 300 catchments across Mainland China[J],2019,572:486-500.
APA	Jiang, Liguang,&Bauer-Gottwein, Peter.(2019).How do GPM IMERG precipitation estimates perform as hydrological model forcing? Evaluation for 300 catchments across Mainland China.JOURNAL OF HYDROLOGY,572,486-500.
MLA	Jiang, Liguang,et al."How do GPM IMERG precipitation estimates perform as hydrological model forcing? Evaluation for 300 catchments across Mainland China".JOURNAL OF HYDROLOGY 572(2019):486-500.