BackForwardInstrument:  AMR-C 

Instrument details
Acronym AMR-C
Full name Advanced Microwave Radiometer - Climate Quality
Purpose Water vapour correction for the Sentinel-6 radar altimeter (SRAL)
Short description 3-frequencies:18.7, 23.8 and 34 GHz. An experimental high-frequency component, HRMR, for high resolution support to the SAR mode of SRAL has been added. See HRMR page for more details.
Background Evolution of the AMR flown on JASON 2 and 3
Scanning Technique Nadir-only viewing linked to Poseidon altimeter view.
Resolution 25 km
Coverage / Cycle Global coverage in 1 month for 30 km average spacing, or in 10 days for 100 km average spacing
Mass Power Data Rate


Providing Agency NOAA
Instrument Maturity Flown on operational programme
Utilization Period: 2021 to 2036
Last update: 2022-08-31
Detailed characteristics
Frequency (GHz) Bandwidth (MHz) Polarisation
18.7 200 Linear
23.8 400 Linear
34 700 Linear
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)*4 - fairOver sea only.. Along-track only.MW channel(s) in the water vapour band around 23 GHz