BackForwardInstrument:  IRIS-D 

Instrument details
Acronym IRIS-D
Full name Infra-Red Interferometer Spectrometer - D
Purpose Exploration of the IR spectrum
Short description Interferometer for the spectral range 5.0-25 µm (400-2000 cm-1), spectral resolution 1.4 cm-1 (unapodised)
Background Follow-on of IRIS-B flown on Nimbus-3. Actually stopped on 25 January 1972 because of problems with the platform power
Scanning Technique Non-scanning, along-track sampling at 100 km intervals
Resolution 94 km
Coverage / Cycle Global in 10 days for cells of 100 km side
Mass 22 kg Power 28 W Data Rate 3.75 kbps

 

Providing Agency NASA
Instrument Maturity Flown on an R&D satellite
Utilization Period: 1970 to 1980
Last update: 2012-09-05
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
  • Subcomponent 1
  • IR hyperspectral sounders [in SSO]
  • IR hyperspectral sounder [in SSO]
Mission objectives
Primary mission objectives
  • Atmospheric temperature
  • Integrated Water Vapour (IWV)
  • Sea surface temperature
  • Specific humidity
  • Upward long-wave irradiance at TOA
Evaluation of Measurements