CEOS EO HANDBOOK – INSTRUMENT SUMMARY - UVN -
Full Name UV-VIS-NIR Sounder Status No longer considered
Instrument Agencies EUMETSAT, ESA Maturity
Instrument Type Atmospheric chemistry Geometry Earth disk scanning
Instrument Technology High-resolution nadir-scanning SW spectrometer Sampling Sounding
Data Access Open Access Data Format netCDF
Measurements and Applications Measurements of atmospheric trace gases, mainly O3, NO2, SO2, H2CO. The product list is not yet approved, the accuracy summary column lists the breakthrough user requirements.
Resolution Summary < 5 km at SSP, possibly relaxed to 50 km for wavelengths < 308 nm
Swath Summary FOV E-W: 30°W-45°E @ 40°N, N-S: 30°N-65°N
Accuracy Summary H2CO: 50%, NO2: 50%, O3: 10%, SO2: 50%
Waveband Summary UV-1: 290 - 308 nm, UV-2: 308 - 400 nm, VIS: 400 - 500 nm, NIR: 750 - 775 nm
UV (~0.01 µm - ~0.40 µm)
VIS (~0.40 µm - ~0.75 µm)
NIR (~0.75 µm - ~1.3 µm)
Instrument Measurements
Measurements Overview
CategoryParameter
AerosolsAerosol Extinction / Backscatter (column/profile)
Aerosol optical depth (column/profile)
Aerosol absorption optical depth (column/profile)
Atmospheric Humidity FieldsAtmospheric specific humidity (LT, HT)
OzoneO3 Mole Fraction
Trace gases (excluding ozone)CH4 Mole Fraction
CO Mole Fraction
NO2 Mole Fraction
HCHO Mole Fraction
Thematic Links Global Climate Observing System Essential Climate Variables (GCOS ECVs)
ECVDescriptionProduct(s)ECV Inventory 3.0 Record(s)
Aerosols properties click here click here search ECV Inventory records
Carbon Dioxide, Methane and other Greenhouse gases click here click here search ECV Inventory records
Ozone click here click here search ECV Inventory records
Precursors (supporting the Aerosol and Ozone ECVs) click here click here search ECV Inventory records
Water Vapour (upper air) click here click here search ECV Inventory records
Instrument Missions