THE CEOS DATABASE : Missions, Instruments and Measurements
Full Name Advanced Along-Track Scanning Radiometer Status No longer operational
Instrument Agencies UKSA Maturity
Instrument Type Imaging multi-spectral radiometers (vis/IR) and Multiple direction/polarisation radiometers Geometry Conical scanning
Instrument Technology Multi-channel/direction/polarisation radiometer Sampling Imaging
Data Access Open Access Data Format
Measurements and Applications Measurements of sea surface temperature, land surface temperature, cloud top temperature, cloud cover, aerosols, vegetation, atmospheric water vapour and liquid water content.
Resolution Summary IR ocean channels: 1 x 1 km, Visible land channels: 1 x 1 km
[Best Resolution: 1000m]
Swath Summary 500 km
Accuracy Summary Sea surface temperature: <0.5 K over 0.5 x 0.5 deg (lat/long) area with 80% cloud cover Land surface temperature: 0.1 K (relative)
Waveband Summary VIS - NIR: 0.555 µm, 0.659 µm, 0.865 µm, SWIR: 1.6 µm, MWIR: 3.7 µm, TIR: 10.85 µm, 12 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
AerosolsAerosol optical depth (column/profile) 
Aerosol absorption optical depth (column/profile) 
Albedo and reflectanceEarth surface albedo 
Cloud type, amount and cloud top temperatureCloud type 
Multi-purpose imagery (land)Land surface imagery 
Multi-purpose imagery (ocean)Ocean imagery and water leaving radiance 
Radiation budgetShort-wave Earth surface bi-directional reflectance 
Sea ice cover, edge and thicknessSea-ice cover 
Surface temperature (land)Land surface temperature 
Surface temperature (ocean)Sea surface temperature 
VegetationVegetation type 
Instrument Missions
Envisat - Environmental Satellite (2002 - 2012)
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