In this paper, the nearly 3-year Global Precipitation Measurement (GPM) Level 1C (L1C) (https://disc.gsfc.nasa.gov/datasets?keywords=1C&page=1&project=GPM,TRMM accessed on 19 July 2021) AMSR2 data [44] are adopted, which recalibrate the AMSR2 Level 1B data using GPM Microwave Imager...