GFAS provides a global flood risk map which shows precipitation return
period calculated from
satellite precipitation data of TRMM(*1).
GFASfs horizontal resolution is about 25 km and we update its data every 24 hours.
On the other hand, JAXA has been delivering another satellite-based precipitation
(Global Satellite Mapping of Precipitation *2). Its horizontal resolution
is about 10km and it is
updated every hour.