气候变化领域集成服务门户(CCPortal): How reliable are the satellite-based precipitation estimations in guiding hydrological modelling in South China?

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DOI	10.1016/j.jhydrol.2021.126705
	How reliable are the satellite-based precipitation estimations in guiding hydrological modelling in South China?
	Su, Jianbin; Li, Xin; Ren, Weiwei; Lu, Haishen; Zheng, Donghai
通讯作者	Zheng, DH (通讯作者)
发表日期	2021
ISSN	0022-1694
EISSN	1879-2707
卷号	602
英文摘要	With increasing spatiotemporal resolution and accuracy, the satellite-based precipitation estimations have made their exploitation in hydrological applications possible, especially in poorly gauged regions. However, their hydrological utilities still need to be evaluated in different catchments to provide useful knowledge to the endusers. This study investigates the performance of latest version (V06) of Integrated Multi-satellitE Retrievals for Global Precipitation Measurement (IMERG) products and their capacity to guide hydrological modelling in South China. Both near-real-time (i.e., Early run, IMERG-E) and post-real-time (i.e., Final run, IMERG-F) IMERG products are evaluated, and the post-real-time TRMM Multi-satellite Precipitation Analysis (TMPA 3B42) product is employed for intercomparison. The hydrological utilities of abovementioned products are further explored over six different medium-sized catchments in South China based on the grid-based Xinanjiang model. The results indicate that the IMERG-F outperforms the IMERG-E in South China, and the quality of TMPA 3B42 falls between them in terms of KGE' and its components. For the hydrological utility, using gauge-based model parameters, the IMERG-E forced simulations show poor performance in most of the selected catchments, whereas much better performance is observed for the IMERG-F forced simulations. Implementation of input-specific calibration significantly improves the simulation performance of three SPEs, and such improvement is much more pronounced for the IMERG-E. The TMPA 3B42 forced simulations generally illustrate comparable reliability to these of IMERG-F but with a slightly degraded performance. Overall, the IMERG-E shows high values in facilitating hydrological modelling over most ungauged catchments, and the IMERG-F shows much better hydrological performance. However, the best performing IMERG-F forced simulations are still inferior to these driven by the benchmark precipitation, and it's thus still hard to replace gauge observations completely with the SPEs. This study provides a helpful knowledge about hydrological performance of satellite-based precipitation estimations, which potentially promote their widespread applications in hydrological modelling.
关键词	GPM IMERG SPATIAL EVALUATION CLIMATE-CHANGE RIVER-BASIN PRODUCTS SIMULATION TMPA TRMM PERFORMANCE MICROWAVE
英文关键词	Satellite precipitation; IMERG; TMPA; Hydrological validation; South China
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:000704794400011
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/260126
推荐引用方式 GB/T 7714	Su, Jianbin,Li, Xin,Ren, Weiwei,et al. How reliable are the satellite-based precipitation estimations in guiding hydrological modelling in South China?[J]. 中国科学院青藏高原研究所,2021,602.
APA	Su, Jianbin,Li, Xin,Ren, Weiwei,Lu, Haishen,&Zheng, Donghai.(2021).How reliable are the satellite-based precipitation estimations in guiding hydrological modelling in South China?.JOURNAL OF HYDROLOGY,602.
MLA	Su, Jianbin,et al."How reliable are the satellite-based precipitation estimations in guiding hydrological modelling in South China?".JOURNAL OF HYDROLOGY 602(2021).