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.
Full Name
Global Imager follow-on
Status
No longer considered
Instrument Agencies
Maturity
Instrument Type
Imaging multi-spectral radiometers (vis/IR) 
and Ocean colour instruments
Geometry
Cross-track scanning
Instrument Technology
Medium-resolution spectro-radiometer
Sampling
Imaging
Resolution
1 km for 28 bands, 250 m for 6 bands
Accuracy
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
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) |
| TIR (~6.0 µm - ~15.0 µm) |