THE CEOS DATABASE : Missions, Instruments and Measurements
Full Name Second-generation Global Imager Status Operational
Instrument Agencies JAXA Maturity Medium Heritage
Instrument Type Imaging multi-spectral radiometers (vis/IR) and Ocean colour instruments Geometry Push-broom scanning / Cross-track scanning
Instrument Technology Medium-resolution spectro-radiometer Sampling Imaging
Data Access No Access Data Format HDF5
Measurements and Applications Medium resolution multi-spectral imaging of land, ocean and atmosphere. SGLI-VNR is an optical sensor capable of multi-channel nadir observation at wavelengths from near-UV to NIR and forward or backward polarization observation at red and near infrared wavelengths (Push-broom scanning). SGLI-IRS is an optical sensor capable of multi-channel nadir observation at wavelengths from SWIR to TIR wavelengths (Cross-track scanning).
Resolution Summary SGLI-VNR: 250 m, 1000 m; SGLI-IRS: 250 m, 500 m, 1000 m
[Best Resolution: 250m]
Swath Summary SGLI-VNR: 1150 km; SGLI-IRS: 1400km
[Max Swath: 1400 km]
Accuracy Summary
Waveband Summary VIS - NIR: 0.38 - 0.865 µm; SW: 1.05 - 2.21 µm; TIR: 10.8 - 12.0 µm
UV (~0.01 µm - ~0.40 µm)
VIS (~0.40 µm - ~0.75 µm)
NIR (~0.75 µm - ~1.3 µm)
SWIR (~1.3 µm - ~3.0 µm)
TIR (~6.0 µm - ~15.0 µm)
Instrument Measurements
AerosolsAerosol optical depth (TC) 
Albedo and reflectancePhotosynthetically Active Radiation (PAR)15 [%]
Fractionally absorbed PAR (FPAR) 
Earth surface albedo 
Cloud particle properties and profileCloud optical depth100 [%]
Cloud type, amount and cloud top temperatureCloud type 
Cloud cover15 [%]
Cloud top height2 [km]
Cloud top temperature 
Multi-purpose imagery (land)Land surface imagery 
Ocean colour/biologyOcean chlorophyll concentration100 [%]
Ocean suspended sediment concentration100 [%]
Color dissolved organic matter (CDOM)100 [%]
Sea ice cover, edge and thicknessSea-ice cover7 [%]
Sea-ice surface temperature 
Snow cover, edge and depthSnow cover7 [%]
Snow surface temperature 
Snow Grain Size50 [%]
Surface temperature (land)Land surface temperature2.5 [degrees Kelvin]
Surface temperature (ocean)Sea surface temperature0.8 [degrees Kelvin]
VegetationNormalized Differential Vegetation Index (NDVI)20 [%]
Leaf Area Index (LAI)30 [%]
Vegetation type20 [%]
Instrument Missions
GCOM-C - Global Change Observation Mission-Climate (2017 - 2022)
GCOM-C2 - Global Change Observation Mission-Climate2 (2021 - 2026)
GCOM-C3 - Global Change Observation Mission-Climate3 (2025 - 2030)
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