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
Morrison, OK (Extended) 2019-05-23
Central Facility, Lamont, OK 1993-07-21
Peckham, OK (Extended) 2019-09-18
Central Facility, Barrow AK 1998-01-02


Khanal S, Z Wang, and J French. 2020. "Improving middle and high latitude cloud liquid water path measurements from MODIS." Atmospheric Research, 243, 10.1016/j.atmosres.2020.105033.

Chase R, S Nesbitt, and G McFarquhar. 2020. "Evaluation of the Microphysical Assumptions within GPM-DPR Using Ground-Based Observations of Rain and Snow." Atmosphere, 11(6), 10.3390/atmos11060619.

Maahn M, D Turner, U Löhnert, D Posselt, K Ebell, G Mace, and J Comstock. 2020. "Optimal Estimation Retrievals and Their Uncertainties: What Every Atmospheric Scientist Should Know." Bulletin of the American Meteorological Society, preprint(2020), 10.1175/BAMS-D-19-0027.1. ONLINE.

Wu P, X Dong, B Xi, J Tian, and D Ward. 2020. " Profiles of MBL cloud and drizzle microphysical properties retrieved from ground‐based observations and validated by aircraft measurements over the Azores ." Journal of Geophysical Research: Atmospheres, 125(9), e2019JD032205, 10.1029/2019JD032205.

Zheng X, B Xi, X Dong, T Logan, Y Wang, and P Wu. 2020. "Investigation of aerosol-cloud interactions under different absorptive aerosol regimes using Atmospheric Radiation Measurement (ARM) southern Great Plains (SGP) ground-based measurements." Atmospheric Chemistry and Physics, 20(6), 10.5194/acp-20-3483-2020.

Sokolowsky G, E Clothiaux, C Baggett, S Lee, S Feldstein, E Eloranta, M Cadeddu, N Bharadwaj, and K Johnson. 2020. "Contributions to the Surface Downwelling Longwave Irradiance during Arctic Winter at Utqiaġvik (Barrow) Alaska." Journal of Climate, 33(11), 10.1175/JCLI-D-18-0876.1.

Carneiro RG, G Fisch, CK Borges, and A HENKES. 2020. "Erosion of the nocturnal boundary layer in the central Amazon during the dry season." Acta Amazonica, 50(1), 10.1590/1809-4392201804453.

Pennypacker S, M Diamond, and R Wood. 2020. "Ultra-clean and smoky marine boundary layers frequently occur in the same season over the southeast Atlantic." Atmospheric Chemistry and Physics, 20(4), 10.5194/acp-20-2341-2020.

Lubin D, D Zhang, I Silber, R Scott, P Kalogeras, A Battaglia, D Bromwich, M Cadeddu, E Eloranta, A Fridlind, A Frossard, K Hines, S Kneifel, W Leaitch, W Lin, J Nicolas, H Powers, P Quinn, P Rowe, L Russell, S Sharma, J Verlinde, and A Vogelmann. 2020. "AWARE: The Atmospheric Radiation Measurement (ARM) West Antarctic Radiation Experiment." Bulletin of the American Meteorological Society, 101(7), 10.1175/BAMS-D-18-0278.1.

Gustafson W, A Vogelmann, Z Li, X Cheng, K Dumas, S Endo, K Johnson, B Krishna, T Toto, and H Xiao. 2020. "The Large-Eddy Simulation (LES) Atmospheric Radiation Measurement (ARM) Symbiotic Simulation and Observation (LASSO) Activity for Continental Shallow Convection." Bulletin of the American Meteorological Society, 101(4), 10.1175/BAMS-D-19-0065.1.
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