mwr: Microwave Radiometer

The microwave radiometer (MWR) provides time-series measurements of column-integrated amounts of water vapor and liquid water. The instrument itself is a sensitive microwave receiver that detects the microwave emissions of the vapor and liquid water molecules in the atmosphere at two frequencies: 23.8 and 31.4 GHz.

Integrated water vapor and liquid water path are derived from radiance measurements with a statistical retrieval algorithm that uses monthly derived and location-dependent linear regression coefficients.



  • Fixed
  • AMF1
  • AMF2
  • AMF3

Active Instrument Locations

Facility Name Instrument Start Date
Central Facility, Barrow AK 1998-01-02
Central Facility, Lamont, OK 1993-07-21

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Silber I, J Verlinde, S Wang, D Bromwich, A Fridlind, M Cadeddu, E Eloranta, and C Flynn. 2019. "Cloud Influence on ERA5 and AMPS Surface Downwelling Longwave Radiation Biases in West Antarctica." Journal of Climate, , 10.1175/JCLI-D-19-0149.1. ONLINE.

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