BackForwardInstrument:  SSTM 

Instrument details
Acronym SSTM
Full name Sea Surface Temperature Monitor
Purpose Sea-surface temperature
Short description 2-channel TIR radiometer around 11 and 12 μm [see details below]
Background In connection with ocean colour from OCM
Scanning Technique Cross-track, swath 1440 km
Resolution 1.08 km at s.s.p.
Coverage / Cycle Global each day
Mass Power Data Rate

 

Providing Agency ISRO
Instrument Maturity Flown on an R&D satellite
Utilization Period: 2025 to 2030
Last update: 2023-11-13
Detailed characteristics

Central wavelength

Spectral interval

NEΔT @ specified input

11.0 µm

10.75-11.25 µm

0.15 K @ 300 K

12.0 µm

11.75-12.25 µm

0.15 K @ 300 K
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
  • Moderate resolution optical imager
WIGOS Subcomponents No WIGOS subcomponents have been defined.
Mission objectives
Primary mission objectives
  • Cloud cover
  • Cloud top height
  • Cloud top temperature
  • Sea surface temperature
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 cover*5 - marginalNo specific limitation.TIR channel(s)
Cloud top height*4 - fairNo specific limitation.TIR window channels to estimate cloud top height from its temperature
Cloud top temperature*4 - fairNo specific limitation.TIR window channels
Fire fractional cover5 - marginalCloud sensitive.. Coarse spatial resolution.TIR channels
Fire radiative power5 - marginalCloud sensitive.. Coarse spatial resolution.TIR channels
Fire temperature5 - marginalCloud sensitive.. Coarse spatial resolution.TIR channels
Land surface temperature4 - fairCloud sensitive.TIR split window channels around 11 micrometers for water vapour correction
Sea surface temperature*4 - fairCloud sensitive.TIR split window channels around 11 micrometers for water vapour correction
Integrated Water Vapour (IWV)4 - fairCloud sensitive.. Low troposphere dominant.TIR channels in the 11 micrometers split window
Wind (horizontal)5 - marginalLimited to high latitudes.. Cloud or water vapour tracers needed.TIR channel(s) around 11 micrometers window