Systematical estimation of GPM-based global satellite mapping of precipitation products over China

• Published in: Atmospheric research 2018-03, Vol.201, p.206-217
• Main Authors: Zhao, Haigen, Yang, Bogang, Yang, Shengtian, Huang, Yingchun, Dong, Guotao, Bai, Juan, Wang, Zhiwei
• Format: Article
• Language: English
• Subjects: China; Estimation; GPM; GSMaP; IMERG; Precipitation
• ISSN: 0169-8095; 1873-2895
• DOI: 10.1016/j.atmosres.2017.11.005

As the Global Precipitation Measurement (GPM) Core Observatory satellite continues its mission, new version 6 products for Global Satellite Mapping of Precipitation (GSMaP) have been released. However, few studies have systematically evaluated the GSMaP products over mainland China. This study quantitatively evaluated three GPM-based GSMaP version 6 precipitation products for China and eight subregions referring to the Chinese daily Precipitation Analysis Product (CPAP). The GSMaP products included near-real-time (GSMaP_NRT), microwave-infrared reanalyzed (GSMaP_MVK), and gauge-adjusted (GSMaP_Gau) data. Additionally, the gauge-adjusted Integrated Multi-Satellite Retrievals for Global Precipitation Measurement Mission (IMERG_Gau) was also assessed and compared with GSMaP_Gau. The analyses of the selected daily products were carried out at spatiotemporal resolutions of 1/4° for the period of March 2014 to December 2015 in consideration of the resolution of CPAP and the consistency of the coverage periods of the satellite products. The results indicated that GSMaP_MVK and GSMaP_NRT performed comparably and underdetected light rainfall events (