mwr > Microwave RadiometerInstrument Type(s) > Baseline • External • Guest

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


Riihimaki L, S McFarlane, and C Sivaraman. 2021. Droplet Number Concentration Value-Added Product. Ed. by Robert Stafford, ARM user facility. DOE/SC-ARM-TR-140.

Silber I, A Fridlind, J Verlinde, A Ackerman, G Cesana, and D Knopf. 2021. "The prevalence of precipitation from polar supercooled clouds." Atmospheric Chemistry and Physics, 21(5), 10.5194/acp-21-3949-2021.
Research Highlight

Preusker R, C Carbajal Henken, and J Fischer. 2021. "Retrieval of Daytime Total Column Water Vapour from OLCI Measurements over Land Surfaces." Remote Sensing, 13(5), 10.3390/rs13050932.

Vignon E, S Alexander, P DeMott, G Sotiropoulou, F Gerber, T Hill, R Marchand, A Nenes, and A Berne. 2021. "Challenging and improving the simulation of mid‐level mixed‐phase clouds over the high‐latitude Southern Ocean." Journal of Geophysical Research: Atmospheres, 126(7), e2020JD033490, 10.1029/2020JD033490.

Alexander S, G McFarquhar, R Marchand, A Protat, É Vignon, G Mace, and A Klekociuk. 2021. "Mixed‐phase clouds and precipitation in Southern Ocean cyclones and cloud systems observed poleward of 64°S by ship‐based cloud radar and lidar." Journal of Geophysical Research: Atmospheres, , e2020JD033626, 10.1029/2020JD033626. ONLINE.

Cadeddu MP. 2021. Microwave Radiometer – 3-Channel (MWR3C) Instrumen tHandbook. Ed. by Robert Stafford, ARM user facility. DOE/SC-ARM/TR-108.

Wu X, K Balmes, and Q Fu. 2021. "Aerosol direct radiative effects at the ARM SGP and TWP Sites: Clear skies." Journal of Geophysical Research: Atmospheres, 126(5), e2020JD033663, 10.1029/2020JD033663.

Geerts B, G McFarquhar, L Xue, M Jensen, P Kollias, M Ovchinnikov, M Shupe, P DeMott, Y Wang, M Tjernstrom, P Field, S Abel, T Spengler, R Neggers, S Crewell, M Wendisch, and C Lupkes. 2021. Cold-Air Outbreaks in the Marine Boundary Layer Experiment (COMBLE) Field Campaign Report. Ed. by Robert Stafford, ARM user facility. DOE/SC-ARM-21-001.


Achtert P, E O'Connor, I Brooks, G Sotiropoulou, M Shupe, B Pospichal, B Brooks, and M Tjernström. 2020. "Properties of Arctic liquid and mixed-phase clouds from shipborne Cloudnet observations during ACSE 2014." Atmospheric Chemistry and Physics, 20(23), 10.5194/acp-20-14983-2020.

Mace G, A Protat, R Humphries, S Alexander, I McRobert, J Ward, P Selleck, M Keywood, and G McFarquhar. 2020. "Southern Ocean Cloud Properties Derived from CAPRICORN and MARCUS Data." Journal of Geophysical Research: Atmospheres, 1 26(4), e2020JD033368, 10.1029/2020JD033368.

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