This paper presents a comparison of four different rainfall data sources: rainfalls from TRMM and GPM satellites, PERSIANN system, and in-situ measurements at meteorological stations. The data from TRMM and GPM satellites have been used by many countries. The comparisons of rainfall data from satellites or the online metadata system with in-situ measurement present a similar pattern of spatial distribution between these resources but the amounts of rainfall are quite different. | Comparison of rainfall distribution between ground measurements and data capture from satellite in Ca river basin
