THE CEOS DATABASE : Missions, Instruments and Measurements
CEOS EO HANDBOOK – INSTRUMENT SUMMARY - SPEXone -
Full Name Spectro-Polarimeter for Exploration Status Being developed
Instrument Agencies NSO, SRON, NASA Maturity
Instrument Type Multiple direction/polarisation radiometers Geometry Nadir-viewing
Instrument Technology Multi-channel/direction/polarisation radiometer Sampling Imaging
Data Access Open Access Data Format
Measurements and Applications Polarimeter for measuring aerosol optical properties, clouds and aerosol types. Multi-angle spectro-polarimetry by spectral modulation technology. Distribution and detailed micro-phyiscal properties of atmospheric aerosol. Direct and indirect aerosol radiative forcing and their impact on climate.
Resolution Summary 2.5 km
[Best Resolution: 2500m]
Swath Summary Narrow swath ±4.5°; 100 km; global coverage: 1 month.
[Max Swath: 100 km]
Accuracy Summary Polarimetric: 0.003; Radiometric: 0.02
Waveband Summary 385 to 770nm at 2nm bands
VIS (~0.40 µm - ~0.75 µm)
Instrument Measurements
CategoryParameterAccuracy
AerosolsAerosol Extinction / Backscatter (column/profile) 
Aerosol optical depth (column/profile) 
Aerosol effective radius (column/profile) 
Aerosol absorption optical depth (column/profile) 
Aerosol Single Scattering Albedo 
Aerosol Layer Height 
Instrument Missions
PACE - Plankton, Aerosol, Cloud, ocean Ecosystem (2022 - 2025)
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