More about CHIRP

The Climate Hazards Group InfraRed Precipitation (CHIRP) dataset is a high-resolution, 0.05° x 0.05°, satellite only global rainfall dataset spanning 60°N-60°S (and all longitudes) ranging from 1981 to near-present. CHIRP uses geostationary satellite Infrared (IR) imagery to monitor cloud top temperatures, which are then related to rainfall intensity. 

Read more about CHIRP here: https://www.nature.com/articles/sdata201566