BackForwardInstrument:  TIR 

Instrument details
Acronym TIR
Full name Thermal IR Spectrometer
Purpose To study the Earth's surface in the thermal infrared at high spatial resolution.
Short description Three channel IR radiometer with a spatial resolution of 30m. The wavelength of the channels are 8-10.5 um, 10.3-11.3 um and 11.5-12.5 um.
Background A new development.
Scanning Technique Cross-track 300 km swath.
Resolution 30m
Coverage / Cycle Revisits the same spot every 11 days.
Mass Power Data Rate

 

Providing Agency CAS
Instrument Maturity Flown on an R&D satellite
Utilization Period: 2022 to 0
Last update: 2023-07-03
Detailed characteristics
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
  • Passive optical radiometer or spectrometer
  • High resolution optical imager
WIGOS Subcomponents
  • Subcomponent 1
  • High-resolution multi-spectral VIS/IR imagers
  • High-resolution multi-spectral VIS/IR imager
Mission objectives
Primary mission objectives
  • Lake Surface Temperature
  • Land cover
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
Note: * Primary mission objective.
VariableRelevance for measuring this variableOperational limitationsExplanation
Cloud cover5 - marginalInfrequent coverage.TIR window channel(s) around 11 micrometers
Cloud top height4 - fairInfrequent coverage.TIR window channels around 11 micrometers to estimate cloud top height from its temperature
Cloud top temperature4 - fairInfrequent coverage.TIR window channels around 11 micrometers
Fire fractional cover2 - very highCloud sensitive.. Infrequent coverage.TIR window channel(s) around 11 micrometers
Fire radiative power5 - marginalCloud sensitive.. Infrequent coverage.TIR window channel(s) around 11 micrometers
Fire temperature5 - marginalCloud sensitive.. Infrequent coverage.TIR window channel(s) around 11 micrometers
Land surface temperature4 - fairCloud sensitive.. Infrequent coverage.TIR split window channels around 11 micrometers for water vapour correction
Sea surface temperature4 - fairCloud sensitive.. Infrequent coverage.TIR split window channels for water vapour correction
Integrated Water Vapour (IWV)4 - fairCloud sensitive.. Low troposphere dominant.. Infrequent coverage.TIR channels in the 11 micrometers split window