Full Name Cloud and Aerosol Polarization Imager Status No longer operational
Instrument Agencies NSMC-CMA, NRSCC Maturity
Instrument Type Imaging multi-spectral radiometers (vis/IR) Geometry Push-broom scanning
Instrument Technology Multi-channel/direction/polarisation radiometer Sampling Imaging
Data Access Open Access Data Format HDF 5.0
Measurements and Applications Measures aerosol and cloud
Resolution Summary 250m for 380nm, 670nm and 870nm; 1000m for 1375nm and 1640nm
[Best Resolution: 250m]
Swath Summary 375km
Accuracy Summary Better than 5% for reflectance
Waveband Summary center wavelength: 380nm, 670nm, 870nm, 1375nm, 1640nm. Polarization band: 670nm and 1640nm.
VIS (~0.40 µm - ~0.75 µm)
NIR (~0.75 µm - ~1.3 µm)
SWIR (~1.3 µm - ~3.0 µm)
Instrument Measurements
Measurements Overview
AerosolsAerosol optical depth (TC)
Cloud type, amount and cloud top temperatureCloud cover
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
Cloud Properties click here click here search ECV Inventory records
Instrument Missions
TanSat - The Global Carbon Dioxide Observation Satellite (2016 - 2020)