BackForwardInstrument:  LRIR 

Instrument details
Acronym LRIR
Full name Limb Radiance Inversion Radiometer
Purpose Chemistry of the upper atmosphere. Tracked species: H2O and O3
Short description 4-channel radiometer, with center wavelengths 9.6, 15.2, 15.5 and 25 µm. Channel bandwidths about 5 cm-1
Background Prototype of limb-sounding IR radiometers
Scanning Technique Limb sounding, mechanically driven in the altitude range 10-70 km
Resolution Vertical: 2-4 km; horizontal: 300 km along-view
Coverage / Cycle Global in 3 days for cells of 300 km side
Mass 18 kg Power 36 W Data Rate 15.68 kbps


Providing Agency NASA
Instrument Maturity Flown on an R&D satellite
Utilization Period: 1975 to 1983
Last update: 2017-01-17
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
  • Limb sounders
  • Limb sounder
WIGOS Subcomponents
  • Subcomponent 2
  • UV/VIS/NIR/IR/MW limb sounders
  • UV/VIS/NIR/IR/MW scanning limb sounder
Mission objectives
No mission objectives have been defined.
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.

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Note: * Primary mission objective.