BackForwardInstrument:  EnSAC 

Instrument details
Acronym EnSAC
Full name Environmental Sensor for Atmospheric Composition
Purpose To measure Carbon Dioxide, Methane and other Greenhouse gases
Short description
  • Hyperspectral imager which operates in 3 three spectral wavebands: VIS (380-500nm), NIR (650-900nm) & SWIR(1560-1690nm).
  • NIR band includes the A-band and the SWIR band covers the weak 1.57 and 1.61 micron CO2 bands and the 1.67 micron CH4 band.
  • More details required on spectral resolution
Background
  • New development
Scanning Technique
Resolution 2km fov at nadir
Coverage / Cycle 1400 km swath width
Mass Power Data Rate

 

Providing Agency ISRO
Instrument Maturity Flown on an R&D satellite
Utilization Period: 2027 to 2032
Last update: 2025-11-10
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
  • Cross-nadir infrared sounder, possibly including VIS channels
WIGOS Subcomponents No WIGOS subcomponents have been defined.
Mission objectives
Primary mission objectives
  • CH4 mole fraction
  • CO2 mole fraction
  • NO2 Mole fraction
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
CH4 mole fraction*1 - primaryCloud sensitive.SWIR and MWIR very-high-resolution spectrometry. CH4 lines around 1.6, 2.3, 3.4 and 4.3 micrometers
CO2 mole fraction*1 - primaryCloud sensitive.Very-high resolution SWIR and MWIR spectrometry. CO2 lines around 1.6, 2.1 and 4.3 micrometers