THE CEOS DATABASE : Missions, Instruments and Measurements
CEOS EO HANDBOOK – INSTRUMENT SUMMARY - GLI -
Full Name Global Imager Status No longer operational
Instrument Agencies JAXA Maturity
Instrument Type Imaging multi-spectral radiometers (vis/IR) Geometry Conical scanning
Instrument Technology Medium-resolution spectro-radiometer Sampling Imaging
Data Access Data Format
Measurements and Applications Measures water vapour, aerosols, cloud cover, cloud top height/temp, ocean colour, sea surface temperature, land surface temparature, glacier extent, icebergs, sea ice and snow cover, photosynthetically active radiation, vegetation type and land cover.
Resolution Summary 1 km for 28 bands, 250 m for 6 bands
Swath Summary 1600 km
Accuracy Summary Specific humidity profile: 0.5 g/m2 through total column, surface temp 0.4 - 0.5 K, cloud top temp: 0.5 K, cloud cover: 3%, cloud top height: 0.5 km, ice and snow cover: 5%
Waveband Summary VIS and NIR: 23 bands (380 - 830 nm), NIR - SWIR: 6 bands (1050 - 2215 nm), MWIR - TIR: 7 bands (3.75 - 11.95 µm)
VIS (~0.40 µm - ~0.75 µm)
NIR (~0.75 µm - ~1.3 µm)
SWIR (~1.3 µm - ~3.0 µm)
MWIR (~3.0 µm - ~6.0 µm)
TIR (~6.0 µm - ~15.0 µm)
Instrument Measurements
CategoryParameterAccuracy
AerosolsAerosol Extinction / Backscatter (column/profile) 
Aerosol effective radius (column/profile) 
Aerosol absorption optical depth (column/profile) 
Cloud particle properties and profileCloud optical depth 
Cloud type, amount and cloud top temperatureCloud type 
Cloud cover 
Cloud top height 
Cloud top temperature 
Multi-purpose imagery (ocean)Ocean imagery and water leaving radiance 
Ocean colour/biologyOcean chlorophyll concentration 
Ocean suspended sediment concentration 
Radiation budgetShort-wave Earth surface bi-directional reflectance 
Sea ice cover, edge and thicknessSea-ice cover 
Snow cover, edge and depthSnow cover 
VegetationNormalized Differential Vegetation Index (NDVI) 
Vegetation type 
Instrument Missions
ADEOS-II - Advanced Earth Observing Satellite - II (2002 - 2003)
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