missions

GOSAT-2 (Greenhouse gases Observing Satellite 2 / Ibuki-2)

JAXA greenhouse gas successor satellite launched October 2018; carries TANSO-FTS-2 with improved spectral resolution; SIF retrieval capability at O2-A band (757-771 nm) demonstrated.

GOSAT-2 (Greenhouse gases Observing Satellite 2), also known as Ibuki-2, is the successor to GOSAT, developed jointly by JAXA, the Ministry of the Environment of Japan, and NIES. Launched on 29 October 2018 into a sun-synchronous orbit at 613 km altitude, the mission continues the GOSAT greenhouse gas record; its TANSO-FTS-2 adds a fifth band and intelligent cloud-avoidance pointing, with a 6-day revisit cycle over a 1,300 km swath.^[1]^[2]

The primary instrument is TANSO-FTS-2, a five-band Fourier Transform Spectrometer spanning 0.755 to 14.29 micrometres with 0.2 wavenumber per centimetre spectral resolution and an intelligent pointing system for cloud avoidance. An O2-A band sun-induced fluorescence (SIF) retrieval capability has been demonstrated from TANSO-FTS-2 data. The secondary instrument is TANSO-CAI-2, a pushbroom aerosol and cloud imager operating from 0.333 to 1.675 micrometres with a 1,000 km swath.^[1]^[3]

GOSAT-2 has experienced recurring short data-delivery suspensions associated with lunar calibration and diagnostic mode events; each suspension has been resolved and normal operations resumed within days to weeks. Data are distributed through JAXA EORC and the NIES GOSAT-2 project site.^[2]^[4]

Supply chain position

operated by Japan Aerospace Exploration Agency

launched on H-IIA (JAXA/MHI)

related to Greenhouse gas inventory

related to CO2

related to Methane (CH4)

Sources

[1]GOSAT-2 (Greenhouse gases Observing Satellite-2 / Ibuki-2) - eoPortalcommunity2026-06-11
[2]GOSAT-2 Project Site - NIESagency doc2026-06-11
[3]GOSAT-2 TANSO FTS-2 and CAI-2 full archive - ESA Earth Onlineagency doc2026-06-11
[4]Earth observations using GOSAT series - Ministry of the Environment Japanagency doc2026-06-11

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Plain text

GOSAT-2 (Greenhouse gases Observing Satellite 2 / Ibuki-2). EO-Atlas, SpectraWorks B.V. https://eo-atlas.org/missions/gosat-2 (CC BY 4.0)

BibTeX

@misc{eoatlas:missions:gosat-2,
  title = {GOSAT-2 (Greenhouse gases Observing Satellite 2 / Ibuki-2)},
  author = {{EO-Atlas}},
  publisher = {SpectraWorks B.V.},
  note = {CC BY 4.0},
  url = {https://eo-atlas.org/missions/gosat-2}
}