rwp: Radar Wind Profiler

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.



  • Fixed
  • AMF1
  • AMF2
  • AMF3

Related Publications


Giangrande SE, T Toto, MP Jensen, M Bartholomew, Z Feng, A Protat, C Williams, C Schumacher, and L Machado. 2016. "Convective cloud vertical velocity and mass-flux characteristics from radar wind profiler observations during GoAmazon2014/5." Journal of Geophysical Research: Atmospheres, 121(21), 10.1002/2016JD025303. ONLINE.

Giangrande SE, T Toto, A Bansemer, MR Kumjian, S Mishra, and A Ryzkhov. 2016. "Insights into riming and aggregation processes as revealed by aircraft, radar, and disdrometer observations for a 27 April 2011 widespread precipitation event." Journal of Geophysical Research: Atmospheres, 121(10), 10.1002/2015JD024537. ONLINE.

Jensen MP, SE Giangrande, and MJ Bartholomew. 2016. Radar Wind Profiler for Cloud Forecasting at Brookhaven National Laboratory (BNL) Field Campaign Report. Ed. by Robert Stafford, DOE ARM Climate Research Facility. DOE/SC-ARM-16-025.

Jensen M, MJ Bartholomew, and S Giangrande. 2016. 915-MHz Wind Profiler for Cloud Forecasting at Brookhaven National Laboratory. DOE ARM Climate Research Facility. DOE/SC-ARM-15-024.


Jensen MP, WA Petersen, A Bansemer, N Bharadwaj, LD Carey, DJ Cecil, SM Collis, AD Del Genio, B Dolan, J Gerlach, SE Giangrande, A Heymsfield, G Heymsfield, P Kollias, TJ Lang, SW Nesbitt, A Neumann, M Poellot, SA Rutledge, M Schwaller, A Tokay, CR Williams, DB Wolff, S Xie, and EJ Zipser. 2015. "The Midlatitude Continental Convective Clouds Experiment (MC3E)." Bulletin of the American Meteorological Society, , doi:10.1175/BAMS-D-14-00228.1. ONLINE.


Fang M, BA Albrecht, VP Ghate, and P Kollias. 2013. "Turbulence in continental stratocumulus, Part I: External forcings and turbulence structures." Boundary-Layer Meteorology, 149(454), doi:10.1007/s10546-013-9873-3.

Fang M, BA Albrecht, VP Ghate, and P Kollias. 2013. "Turbulence in continental stratocumulus, Part II: Eddy dissipation rates and large-eddy coherent structures." Boundary-Layer Meteorology, , doi:10.1007/s10546-013-9872-4.

Giangrande SE, S Collis, J Straka, A Protat, C Williams, and S Krueger. 2013. "A Summary of Convective-Core Vertical Velocity Properties Using ARM UHF Wind Profilers in Oklahoma." Journal of Applied Meteorology and Climatology, 52(10), 10.1175/JAMC-D-12-0185.1.

Tridon F, A Battaglia, P Kollias, E Luke, and C Williams. 2013. "Signal post-processing and reflectivity calibration of the Atmospheric Radiation Measurement Program 915 MHz wind profilers." Journal of Atmospheric and Oceanic Technology, 30(6), doi:10.1175/JTECH-D-12-00146.1.

Zhang Y and SA Klein. 2013. "Factors Controlling the Vertical Extent of Fair-Weather Shallow Cumulus Clouds over Land: Investigation of Diurnal-Cycle Observations Collected at the ARM Southern Great Plains Site." Journal of the Atmospheric Sciences, 70(4), 10.1175/JAS-D-12-0131.1.

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