THE CEOS DATABASE : Missions, Instruments and Measurements
CEOS EO HANDBOOK – INSTRUMENT SUMMARY - OLCI -
Full Name Ocean and Land Colour Imager Status Operational
Instrument Agencies ESA, COM Maturity
Instrument Type Imaging multi-spectral radiometers (vis/IR) and Ocean colour instruments Geometry Nadir-viewing
Instrument Technology Medium-resolution spectro-radiometer Sampling Imaging
Data Access Open Access Data Format
Measurements and Applications Marine and land services.
Resolution Summary 300 m
[Best Resolution: 300m]
Swath Summary 1270 km, across-track tilt 12.2 deg to the West
[Max Swath: 1270 km]
Accuracy Summary 2% abs, 0.1% rel.
Waveband Summary 21 bands in VNIR/SWIR
VIS (~0.40 µm - ~0.75 µm)
NIR (~0.75 µm - ~1.3 µm)
Instrument Measurements
CategoryParameterAccuracy
AerosolsAerosol Extinction / Backscatter (column/profile) 
Aerosol optical depth (column/profile) 
Aerosol effective radius (column/profile) 
Volcanic ash 
Albedo and reflectancePhotosynthetically Active Radiation (PAR) 
Fractionally absorbed PAR (FPAR) 
Earth surface albedo 
Atmospheric Temperature FieldsCloud base height 
Atmospheric pressure (over land surface) 
Atmospheric pressure (over sea surface) 
Cloud particle properties and profilePrecipitation Profile (liquid or solid) 
Cloud optical depth 
Cloud type, amount and cloud top temperatureCloud cover 
Multi-purpose imagery (land)Fire area 
Land surface imagery 
Multi-purpose imagery (ocean)Ocean imagery and water leaving radiance 
Ocean colour/biologyOcean chlorophyll concentration 
Ocean suspended sediment concentration 
Color dissolved organic matter (CDOM) 
Radiation budgetDiffuse attenuation coefficient (DAC) 
VegetationNormalized Differential Vegetation Index (NDVI) 
Leaf Area Index (LAI) 
Vegetation type 
Land cover 
Instrument Missions
Sentinel-3 A - Sentinel-3 A (2016 - 2023)
Sentinel-3 B - Sentinel-3 B (2018 - 2025)
Sentinel-3 C - Sentinel-3 C (2023 - 2029)
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