气候变化领域集成服务门户(CCPortal): Comprehensive error analysis of satellite precipitation estimates based on Fengyun-2 and GPM over Chinese mainland

CCPortal

DOI	10.1016/j.atmosres.2021.105805
	Comprehensive error analysis of satellite precipitation estimates based on Fengyun-2 and GPM over Chinese mainland
	Wu H.; Yong B.; Shen Z.; Qi W.
发表日期	2021
ISSN	0169-8095
卷号	263
英文摘要	The spatial-temporal error characteristics of four mainstream satellite precipitation products developed by China and United States, respectively, including the Fengyun-based (FY-2F and FY-2G) and the GPM-based (IMERG-Late and IMERG-Final) over Chinese mainland were comprehensively analyzed from January 2018 to December 2019. In general, both IMERG-Final and FY-2G perform better at the hourly and daily scales. While the FY-2F product has the relatively worst performance with lowest correlation coefficient (CC) and highest root mean square error (RMSE) values. In particular, FY-2F has considerable total bias and missed precipitation errors in summer when compared to other three precipitation products. As for winter, the IMERG product suites exhibit significantly overestimation in north-central region of China, while an opposite underestimation occurred in the Fengyun products. Among the four precipitation estimates, IMERG-Final and FY-2G have the lowest normalized-RMSE (NRMSE) at the elevation range of 100–300 m and 300–500 m at daily scale, respectively. The performance at the hourly scale was found to be similar for IMERG-Final and IMERG-Late, but both of which are slightly superior to FY-2G across the elevation ranges. In terms of the detectability for different rain intensities, the IMERG products performed best at higher rain rates, while the Fengyun-based precipitation estimates are superior to IMERG at relatively lower rain ones. The assessment results reported here will provide some valuable feedbacks for algorithm developers of Fengyun products, and enable data users to further understand the error characteristics and potential deficiencies of Fengyun precipitation estimates. © 2021 Elsevier B.V.
英文关键词	Chinese mainland; Error characteristics; Fengyun; IMERG; Satellite precipitation estimates
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/236601
作者单位	State Key Laboratory of Hydrology-Water Resources and Hydraulic Engineering, Hohai University, Nanjing, 210098, China; School of Earth Sciences and Engineering, Hohai University, Nanjing, 210098, China; Key Laboratory of Water Big Data Technology of Ministry of Water Resources, Hohai University, Nanjing, 210098, China
推荐引用方式 GB/T 7714	Wu H.,Yong B.,Shen Z.,et al. Comprehensive error analysis of satellite precipitation estimates based on Fengyun-2 and GPM over Chinese mainland[J],2021,263.
APA	Wu H.,Yong B.,Shen Z.,&Qi W..(2021).Comprehensive error analysis of satellite precipitation estimates based on Fengyun-2 and GPM over Chinese mainland.Atmospheric Research,263.
MLA	Wu H.,et al."Comprehensive error analysis of satellite precipitation estimates based on Fengyun-2 and GPM over Chinese mainland".Atmospheric Research 263(2021).