BackForwardInstrument:  ACE-FTS 

Instrument details
Acronym ACE-FTS
Full name Atmospheric Chemistry Experiment - Fourier Transform Spectrometer
Purpose Atmospheric chemistry at high latitudes and high altitude. Tracked species: CFC-11, CFC-12, CH4, ClONO2, CO, H2O, HCl, HF, HNO3, N2O, N2O5, NO, NO2 and O3
Short description Two-bands interferometer, spectral range: SWIR/MWIR/TIR, sun occultation [see detailed characteristics below]
Background New development
Scanning Technique Sun occultation. About 30 occultations/day
Resolution Vertical: 1-2 km - Horizontal: effective 500 km (limb sounding)
Coverage / Cycle N/A because of the occultation geometry. Only occurring at high latitudes
Mass 41 kg Power 37 W Data Rate

 

Providing Agency CSA
Instrument Maturity Flown on an R&D satellite
Utilization Period: 2004-02-27 to ≥2017
Last update: 2017-01-17
Detailed characteristics
Spectral range No. of channels Spectral resolution SNR @ expected input spectral radiance
2.0 - 5.5 µm 160,000 0.02 cm-1 1000 @ ......... W m-2 sr-1 µm-1
5.5 - 13 µm 50,000 0.02 cm-1 1000 @ ......... W m-2 sr-1 µm-1
Satellites this instrument is flying on

Note: a red tag indicates satellites no longer operational, a green tag indicates operational satellites, a blue tag indicates future satellites

Instrument classification
  • Earth observation instrument
  • Limb sounders
  • Limb sounder
Mission objectives
Primary mission objectives
  • C2H2
  • C2H6
  • CFC-11
  • CFC-12
  • CH4
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Tentative Evaluation of Measurements

The following list indicates which measurements can typically be retrieved from this category of instrument. To see a full Gap Analysis by Variable, click on the respective variable.

Note: table can be sorted by clicking on the column headers
VariableRelevance for measuring this variableOperational limitationsExplanation
Atmospheric temperature5 - marginalLimited to high atmosphere.. Limited to high latitudes.MWIR, TIR limb sounding by solar occultation. Self-calibrating
C2H25 - marginalLimited to high atmosphere.. Limited to high latitudes.TIR spectrometry. C2H2 lines around 7.5 and 13.7 micrometers. Limb sounding by solar occultation. Self-calibrating
C2H65 - marginalLimited to high atmosphere.. Limited to high latitudes.TIR spectrometry. C2H6 lines around 12 micrometers. Limb sounding by solar occultation. Self-calibrating
CFC-115 - marginalLimited to high atmosphere.. Limited to high latitudes.TIR spectrometry. CFC-11 lines around 9.2 and 11.7 micrometers Limb sounding by solar occultation. Self-calibrating
CFC-125 - marginalLimited to high atmosphere.. Limited to high latitudes.TIR spectrometry. CFC-12 lines around 8.8 and 10.8 micrometers. Limb sounding by solar occultation. Self-calibrating
CH45 - marginalLimited to high atmosphere.. Limited to high latitudes.SWIR, MWIR and TIR spectrometry. CH4 lines around 2.3, 4.3 and 7.7 micrometers. Limb sounding by solar occultation. Self-calibrating
ClONO25 - marginalLimited to high atmosphere.. Limited to high latitudes.MWIR and TIR spectrometry. ClONO2 lines around 5.7, 7.7 and 12.5 micrometers. Limb sounding by solar occultation. Self-calibrating
CO5 - marginalLimited to high atmosphere.. Limited to high latitudes.SWIR and MWIR spectrometry. CO lines around 2.3 and 4.6 micrometers. Limb sounding by solar occultation. Self-calibrating
CO25 - marginalLimited to high atmosphere.. Limited to high latitudes.MWIR and TIR spectrometry. CO2 lines around 4.3 and 15 micrometers. Limb sounding by solar occultation. Self-calibrating
COS5 - marginalLimited to high atmosphere.. Limited to high latitudes.TIR spectrometry. COS lines around 11.6 micrometers. Limb sounding by solar occultation. Self-calibrating
H2O5 - marginalLimited to high atmosphere.. Limited to high latitudes.MWIR/TIR spectrometry in a range centred on 6.3 micrometers. Limb sounding by solar occultation. Self-calibrating
HNO35 - marginalLimited to high atmosphere.. Limited to high latitudes.MWIR and TIR spectrometry. HNO3 lines around 5.9, 7.6 and 11.3 micrometers. Limb sounding by solar occultation. Self-calibrating
N2O5 - marginalLimited to high atmosphere.. Limited to high latitudes.SWIR, MWIR and TIR spectrometry. N2O lines around 2.3, 4.5 and 7.7 micrometers. Limb sounding by solar occultation. Self-calibrating
N2O55 - marginalLimited to high atmosphere.. Limited to high latitudes.MWIR and TIR spectrometry. N2O5 lines around 5.8 and 8 micrometers. Limb sounding by solar occultation. Self-calibrating
NO5 - marginalLimited to high atmosphere.. Limited to high latitudes.MWIR spectrometry. NO lines around 5.3 micrometers. Limb sounding by solar occultation. Self-calibrating
NO25 - marginalLimited to high atmosphere.. Limited to high latitudes.TIR spectrometry. NO2 lines around 6.1 micrometers. Limb sounding by solar occultation. Self-calibrating
O35 - marginalLimited to high atmosphere.. Limited to high latitudes.TIR spectrometry. Ozone band around 9.7 micrometers. Limb sounding by solar occultation. Self-calibrating
PAN5 - marginalLimited to high atmosphere.. Limited to high latitudes.MWIR and TIR spectrometry. PAN lines around 5.7, 8.6 and 12.5 micrometers. Limb sounding by solar occultation. Self-calibrating
PSC occurrence5 - marginalLimited to high atmosphere.. Limited to high latitudes.MWIR and TIR spectrometry. Limb sounding by solar occultations. Self-calibrating
SF65 - marginalLimited to high atmosphere.. Limited to high latitudes.TIR spectrometry. SF6 lines around 10.5 micrometers. Limb sounding by solar occultation. Self-calibrating
SO25 - marginalLimited to high atmosphere.. Limited to high latitudes.TIR spectrometry. SO2 lines around 7.3 and 8.6 micrometers. Limb sounding by solar occultation. Self-calibrating
Specific humidity5 - marginalLimited to high atmosphere.. Limited to high latitudes.MWIR and TIR spectrometry in the water vapour band around 6.3 micrometers Limb sounding by solar occultation, Self-calibrating