气候变化领域集成服务门户(CCPortal): Performance evaluation and correction of precipitation data using the 20-year IMERG and TMPA precipitation products in diverse subregions of China

CCPortal

DOI	10.1016/j.atmosres.2020.105304
	Performance evaluation and correction of precipitation data using the 20-year IMERG and TMPA precipitation products in diverse subregions of China
	Ma Q.; Li Y.; Feng H.; Yu Q.; Zou Y.; Liu F.; Pulatov B.
发表日期	2021
ISSN	0169-8095
卷号	249
英文摘要	The latest Integrated Multi-satellite Retrievals for Global Precipitation Measurement (IMERG) dataset version 6, which is the successor of the multi-satellite 3B42 dataset from the Tropical Rainfall Measuring Mission Multi-satellite Precipitation Analysis (TMPA), is now recommended for many purposes. It is unclear how the quality of the latest IMERG data products compares to that of the delisted TMPA series data sets. This study evaluated the accuracy of TRMM 3B42 version 7 and IMERG final version 6 products at 677 stations in the 7 subregions of China over 2000–2019 at the daily, monthly and annual timescales based on gauge-observed precipitation data. The performance of TMPA and IMERG precipitation products was assessed by six statistical indices. The product with the best performance was corrected based on the linear relationship of monthly precipitation between remote sensing products and ground-observed precipitation. The correction was then used for the predicting and mapping of precipitation in July 2019. The results showed that (1) IMERG outperformed TMPA at all three timescales, and the accuracy increased with the expanding timescale. (2) IMERG exhibited better performance in all subregions than TMPA and performed best in the mid-temperate semihumid zone and worst in the mid-temperature arid zone. (3) IMERG showed higher accuracy than TMPA in all months for most subregions and mainland China but performed worse in dry (December, January and February) and wet (July, August and September) months. (4) The linear relationship between remote sensing products and ground-observed precipitation could be used to correct and predict satellite precipitation data without up-to-date gauge observations, the predicted map indicated the good spatial variation in precipitation and better accuracy than the original IMERG data. In conclusion, the IMERG dataset was more accurate and could be used for precipitation investigations at large scales in China. © 2020 Elsevier B.V.
英文关键词	China; Climate zone; IMERG; Multi-satellite precipitation product; TMPA
语种	英语
scopus关键词	Arid regions; Large dataset; Rain gages; Remote sensing; Satellites; Global precipitation measurements; Linear relationships; Precipitation products; Satellite precipitation; Satellite retrieval; Spatial variations; Statistical indices; Tropical rainfall measuring missions; Precipitation (meteorology); mapping; performance assessment; precipitation (climatology); precipitation assessment; raingauge; remote sensing; satellite data; TRMM; China
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/141645
作者单位	College of Water Resources and Architecture Engineering, Northwest A&F University, Yangling Shaanxi, 712100, China; Key Laboratory of Agricultural Soil and Water Engineering in Arid and Semiarid Areas, Ministry of Education, Northwest A&F University, Yangling, 712100, China; Institute of Soil and Water Conservation, Chinese Academy of Science and Ministry of Water Resources, Yangling, Shaanxi 712100, China; Institute of Water Saving Agriculture in Arid Areas of China, Northwest Agriculture and Forestry University, Yangling, Shaanxi 712100, China; Academy of Plateau Science and Sustainability, Qinghai Normal University, Xining, 810016, China; Tashkent Institute of Irrigation and Agricultural Mechanization Engineers, Qoriy Niyoziy 39, Tashkent, 100000, Uzbekistan
推荐引用方式 GB/T 7714	Ma Q.,Li Y.,Feng H.,et al. Performance evaluation and correction of precipitation data using the 20-year IMERG and TMPA precipitation products in diverse subregions of China[J],2021,249.
APA	Ma Q..,Li Y..,Feng H..,Yu Q..,Zou Y..,...&Pulatov B..(2021).Performance evaluation and correction of precipitation data using the 20-year IMERG and TMPA precipitation products in diverse subregions of China.Atmospheric Research,249.
MLA	Ma Q.,et al."Performance evaluation and correction of precipitation data using the 20-year IMERG and TMPA precipitation products in diverse subregions of China".Atmospheric Research 249(2021).