THE CEOS DATABASE : Missions, Instruments and Measurements
CEOS EO HANDBOOK – INSTRUMENT SUMMARY - ACE-FTS -
Full Name Atmospheric Chemistry Experiment (ACE) Fourier Transform Spectrometer Status Operational
Instrument Agencies CSA Maturity
Instrument Type Atmospheric chemistry Geometry Occultation
Instrument Technology Limb-scanning IR spectrometer Sampling Sounding
Data Access Open Access Data Format ASCII, HDF, NetCDF
Measurements and Applications Measure and understand the chemical processes that control the distribution of ozone in the Earth's atmosphere, especially at high altitudes.
Resolution Summary
Swath Summary
Accuracy Summary Depends on species, meets requirements for climate variables
Waveband Summary SWIR - TIR: 2 - 5.5 µm, 5.5 - 13 µm (0.02 cm-1 resolution)
SWIR (~1.3 µm - ~3.0 µm)
MWIR (~3.0 µm - ~6.0 µm)
TIR (~6.0 µm - ~15.0 µm)
Instrument Measurements
CategoryParameterAccuracy
AerosolsAerosol Extinction / Backscatter (column/profile) 
Aerosol absorption optical depth (HT, LS, HS&M) 
Atmospheric Temperature FieldsAtmospheric temperature (LS, HS&M) 
Height of tropopause 
Temperature of tropopause 
Atmospheric WindsWind profile (horizontal) 
Cloud particle properties and profileCloud liquid water (column/profile) 
OzoneOzone profile 
Trace gases (excluding ozone)Atmospheric Chemistry - CH4 (LS, HS&M) 
Atmospheric Chemistry - CO2 (column/profile)10 [ppm]
Atmospheric Chemistry - CO (HT, LS, HS&M) 
Atmospheric Chemistry - CFC-11 (HT, LS) 
Atmospheric Chemistry - CFC-12 (HT, LS) 
Atmospheric Chemistry - NO (HS&M) 
Atmospheric Chemistry - NO2 (HT, LS, HS&M) 
Atmospheric Chemistry - N2O (HT, LS, HS&M) 
Atmospheric Chemistry - HNO3 (HT, LS, HS&M) 
Atmospheric Chemistry - HCl (HT, LS, HS&M) 
Atmospheric Chemistry - ClONO2 (HT, LS, HS&M) 
Atmospheric Chemistry - C2H2 (HT) 
Atmospheric Chemistry - C2H6 (HT, LS) 
Atmospheric Chemistry - HCFC-22 (HT, LS) 
Atmospheric Chemistry - N2O5 (LS, HS&M) 
Atmospheric Chemistry - SF6 (HT, LS) 
Instrument Missions
SCISAT-1 - SCISAT-I/ACE (2003 - 2018)
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