Global Observing Satellite for Greenhouse gases and Water cycle

Global Observing Satellite for Greenhouse gases and Water cycle
Scale model of GOSAT-GW at Tsukuba Space Center Space Dome
NamesIbuki GW
Mission typeEnvironmental
OperatorJAXA
Websitewww.satnavi.jaxa.jp/files/project/gosat-gw/en/
Mission duration7 years (planned)
Spacecraft properties
ManufacturerMitsubishi Electric
Power5.3 kilowatts
Start of mission
Launch date28 June 2025
16:33 UTC
RocketH-IIA-202 F50
Launch siteTanegashima, LA-Y1
ContractorMitsubishi Heavy Industries
Orbital parameters
Reference systemGeocentric
RegimeLow Earth
Instruments
AMSR3
TANSO-3

Global Observing Satellite for Greenhouse gases and Water cycle (GOSAT-GW), also called Ibuki GW, is a Japanese Earth observation satellite for observing the global water cycle and greenhouse gas monitoring. It is a successor to the GCOM-W and the GOSAT-2 satellites. GOSAT-GW was jointly developed by the Japan Aerospace Exploration Agency (JAXA), Ministry of the Environment, and the National Institute for Environmental Studies (NIES). GOSAT-GW was launched on 28 June 2025, on the last launch of JAXA’s workhorse H-IIA rocket.