BackForwardInstrument:  PolSIR radiometer 

Instrument details
Acronym PolSIR radiometer
Full name PolSIR Radiometer
Purpose To better characterize and understand the diurnal variability of tropical and sub-tropical ice clouds.
Short description Dual-band radiometers: 683-GHz (QV & QH), 325/1.5-GHz (QV), 325/3.5-GHz (QV), 325/9.5-GHz (QV & QH)
Background New development
Scanning Technique Cross-track
Coverage / Cycle
Mass Power Data Rate


Providing Agency NASA
Instrument Maturity Flown on an R&D satellite
Utilization Period: 2027 to 2030
Last update: 2023-11-02
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 microwave radiometer
  • Cross-track, special or non-scanning microwave radiometer
WIGOS Subcomponents
  • Subcomponent 2
  • Sub-mm imagery
  • Sub-mm imager
Mission objectives
Primary mission objectives
  • Cloud ice
  • Cloud ice Total Column
  • Cloud ice effective radius
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.