气候变化领域集成服务门户(CCPortal): Evaluation of the GPM IMERG V06 products for light rain over Mainland China

CCPortal

DOI	10.1016/j.atmosres.2021.105510
	Evaluation of the GPM IMERG V06 products for light rain over Mainland China
	Li X.; O S.; Wang N.; Liu L.; Huang Y.
发表日期	2021
ISSN	0169-8095
卷号	253
英文摘要	Monitoring the spatiotemporal characteristics of light rain events is vital to water resources assessment and environmental protection. The Global Precipitation Measurement (GPM) Integrated Multi-satellite Retrievals for GPM (IMERG) products provide new-generation satellite precipitation measurements with improved light rain estimates. However, the spatial distribution of the quality and error structure of IMERG light precipitation detections and the climatic dependence of the error sources have not been studied sufficiently. In this study, we evaluated the GPM IMERG daily light precipitation estimates' performance from 2015 to 2018 over mainland China. We found that: (1) IMERG captured the spatial patterns of light precipitation over mainland China but has limited ability to detect light rainfall events below 5 mm/d; (2) the hit bias is the dominant error of IMERG under 5 mm/d; (3) IMERG exhibits a worse performance and has relatively higher miss bias for light rainfall in areas with a complex winter precipitation phase; (4) the evaluation of IMERG for light rain is affected by the mismatch between gauge data and IMERG data caused by air pollution. These findings can improve the IMERG algorithms for light rainfall and provide a reference for applications based on these datasets. © 2021 Elsevier B.V.
英文关键词	Error analysis; GPM IMERG; Light rain; Satellite precipitation
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/236835
作者单位	College of earth and environmental sciences, Lanzhou University, Lanzhou, 730000, China; Max Planck Institute for Biogeochemistry, Jena, D-07745, Germany; Shanxi Climate Center, Xian, 710016, China
推荐引用方式 GB/T 7714	Li X.,O S.,Wang N.,et al. Evaluation of the GPM IMERG V06 products for light rain over Mainland China[J],2021,253.
APA	Li X.,O S.,Wang N.,Liu L.,&Huang Y..(2021).Evaluation of the GPM IMERG V06 products for light rain over Mainland China.Atmospheric Research,253.
MLA	Li X.,et al."Evaluation of the GPM IMERG V06 products for light rain over Mainland China".Atmospheric Research 253(2021).