Atmospheric Radiation Measurement Climate Research Facility US Department of Energy

rwp > Radar Wind ProfilerInstrument Type(s) > Baseline • External • Guest

The radar wind profiler/radio acoustic sounding system (RWP/RASS), available in 915-MHz (for U.S. deployments) and 1290-MHz (for foreign deployments), measures wind profiles and backscattered signal strength between (nominally) 0.1 km and 5 km and virtual temperature profiles between 0.1 km and 2.5 km. However, ARM no longer operates the RASS portion.

The RWP transmits electromagnetic energy into the atmosphere in as many as five directions (four tilted in opposing vertical planes and on vertical) and measures the strength and frequency of backscattered energy. Calculation of the Doppler shift of the returned signal allows calculation of the atmospheric wind profile.


Data provides a simplified set to 915 Radar Wind Profiler moments which include a calibrated reflectivity.


  • Fixed
  • AMF1
  • AMF2
  • AMF3

Data Details

Developed By Jonathan Helmus | Virendra Ghate | Frederic Tridon
Contact Jonathan Helmus
Resource(s) Data Directory
Data format netcdf, png
Content time range 27 October 1993 - 3 February 2023
Attribute accuracy No formal attribute accuracy tests were conducted.
Positional accuracy No formal positional accuracy tests were conducted.
Data Consistency and Completeness Data set is considered complete for the information presented, as described in the abstract.Users are advised to read the rest of the metadata record carefully for addtional details.
Access Restriction No access constraints are associated with this data.
Use Restriction No use constraints are associated with this data.
File naming convention Follows ARM standards ending with .nc for the data and .png for a related quicklooks.
Directory Organization Flat directory structure.
Citations Tridon et al. Journal of Atmospheric and Oceanic Technology, 2013, 30, 1038.


Pryor S, F Letson, T Shepherd, and R Barthelmie. 2022. "Evaluation of WRF simulation of deep convection in the US Southern Great Plains." Journal of Applied Meteorology and Climatology, , 10.1175/JAMC-D-22-0090.1.

Wang D, A Prein, S Giangrande, A Ramos‐Valle, M Ge, and M Jensen. 2022. "Convective Updraft and Downdraft Characteristics of Continental Mesoscale Convective Systems in the Model Gray Zone." Journal of Geophysical Research: Atmospheres, , e2022JD036746, 10.1029/2022JD036746. ACCEPTED.

Chipilski H, X Wang, D Parsons, A Johnson, and S Degelia. 2022. "The value of assimilating different ground-based profiling networks on the forecasts of bore-generating nocturnal convection." Monthly Weather Review, , 10.1175/MWR-D-21-0193.1.

Skow A, M Poellot, D Delene, M Askelson, K North, and M Oue. 2022. "A Multi-Platform In Situ Kinematic and Microphysical Analysis of a Hybrid Parallel–Trailing Stratiform Mesoscale Convective System." Monthly Weather Review, 150(4), 10.1175/MWR-D-21-0009.1.

Williams C. 2022. "How Much Attenuation Extinguishes mm-Wave Vertically Pointing Radar Return Signals?" Remote Sensing, 14(6), 1305, 10.3390/rs14061305.

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