BackForwardInstrument:  PREFIRE 

Instrument details
Full name Polar Radiant Energy in the Far-InfraRed Experiment
Purpose To document, for the first time, variability in spectral fluxes from 5-45 μm on hourly to seasonal timescales
Short description Description not yet fully available. Spectrometer covering the range 5-45 μm with an unapodised resolution of 0.84 μm. Uncooled.
Background New development
Scanning Technique Pushbroom, 8 cross-track 1.3° IFOV's, swath 100 km.
Resolution 12.7 km at s.s.p. (average for the two orbital altitudes)
Coverage / Cycle Global in 2 weeks for each satellite
Mass 3 kg Power 6 W Data Rate 12 kbps


Providing Agency NASA
Instrument Maturity Flown on an R&D satellite
Utilization Period: 2023 to 2027
Last update: 2022-07-27
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
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.