1. Introduction
The estimated rainfall from satellite is very importa results from the satellite can the extensive spatial co
resolutions. There have been many efforts in operational estimates, most notably since the launch of the Trop
(TRMM) in 1997. In addition, ongoing efforts to improve technique from the community have resulted in new Mapping of Precipitation (GSMaP; Okamoto et al. 2005; 2009; Ushio et al. 2009) project is a recent addition to the resolution precipitation estimates. Supported by the Japa (JST) and Japan Aerospace Exploration Agency (JAXA)
precision, high-resolution precipitation map using s incorporates extensive satellite input data streams from both passive microwave (PMW) and infrared (IR) sensors, and its global precipitation maps are appealing for a wide range of
hydrological applications.