BackForwardInstrument:  MSR 

Instrument details
Acronym MSR
Full name Microwave Scanning Radiometer
Purpose Total.column water vapour over the sea
Short description Two-channel radiometer with frequencies 23.8 and 31.4 GHz
Background New development
Scanning Technique Very limited swath (320 km) by conical scanning around nadir
Resolution 23 km at 31.4 GHz, 32 km at 23.8 GHz
Coverage / Cycle Global in 5 days
Mass 54 kg Power Data Rate 2 kbps


Providing Agency JAXA
Instrument Maturity Flown on an R&D satellite
Utilization Period: 1987 to 1996
Last update: 2017-03-29
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 No WIGOS subcomponents have been defined.
Mission objectives
Primary mission objectives
  • Integrated Water Vapour (IWV)
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
Integrated Water Vapour (IWV)*3 - highOver sea only.MW channel(s) in the water vapour band around 23 GHz