NASDA's future Earth observation satellite plan

NASDA studies future Earth observation satellite plan during 2005-2015 to promote global change and application study. There are three primary missions (1) continuos global observation mission for Earth science, (2) society application mission and (3) process study mission under international cooperation. GCOM (Global Change Observation Mission) is primary mission of continuous global observation mission for 15 years with ADEOS-II. For practical use or society application, ALOS (Advance Land Observing Satellite) and the follow on mission are primary missions. For process study, NASDA studies with NASA about GPM (Global Precipitation Mission)/ATMOS-A for global rainfall measurement and with ESA about ERM (Earth Radiation Mission)/ATMOS-B for Earth radiation budget measurement. This paper describes the overview of NASDA's future satellite plan.