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.



  • Fixed
  • AMF1
  • AMF2
  • AMF3


Feldman D, A Aiken, W Boos, R Carroll, V Chandrasekar, W Collins, S Collis, J Deems, P DeMott, J Fan, A Flores, D Gochis, J Harrington, M Kumjian, LR Leung, T O'Brien, M Raleigh, A Rhoades, SM Skiles, J Smith, R Sullivan, P Ullrich, A Varble, and K Williams. 2021. Surface Atmosphere Integrated Field Laboratory (SAIL) Science Plan. Ed. by Robert Stafford, ARM user facility. DOE/SC-ARM-21-004.

Varble A, S Nesbitt, P Salio, J Hardin, N Bharadwaj, P Borque, P DeMott, Z Feng, T Hill, J Marquis, A Matthews, F Mei, R Öktem, V Castro, L Goldberger, A Hunzinger, K Barry, S Kreidenweis, G McFarquhar, L McMurdie, M Pekour, H Powers, D Romps, C Saulo, B Schmid, J Tomlinson, S van den Heever, A Zelenyuk, Z Zhang, and E Zipser. 2021. "Utilizing a Storm-Generating Hotspot to Study Convective Cloud Transitions: The CACTI Experiment." Bulletin of the American Meteorological Society, , 10.1175/BAMS-D-20-0030.1. ONLINE.

Tao C, Y Zhang, Q Tang, H Ma, V Ghate, S Tang, S Xie, and J Santanello. 2021. "Land–Atmosphere Coupling at the U.S. Southern Great Plains: A Comparison on Local Convective Regimes between ARM Observations, Reanalysis, and Climate Model Simulations." Journal of Hydrometeorology, 22(2), 10.1175/JHM-D-20-0078.1.
Research Highlight

Tian Y, Y Zhang, S Klein, and C Schumacher. 2021. "Interpreting the diurnal cycle of clouds and precipitation in the ARM GoAmazon observations: Shallow to deep convection transition." Journal of Geophysical Research: Atmospheres, 126(5), 2020JD033766, 10.1029/2020JD033766.
Research Highlight

Dorsey KS, R Jundt, CB Ireland, MR Wasem, RA Stafford, and A Hunzinger. 2021. 2020 Atmospheric Radiation Measurement (ARM) Annual Report. Ed. by Kathryn Dorsey, U.S. Department of Energy. DOE/SC-ARM-20-020.

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.


Degelia S, X Wang, D Stensrud, and D Turner. 2020. "Systematic Evaluation of the Impact of Assimilating a Network of Ground-Based Remote Sensing Profilers for Forecasts of Nocturnal Convection Initiation during PECAN." Monthly Weather Review, 148(12), 10.1175/MWR-D-20-0118.1.

Jeyaratnam J, Z Luo, S Giangrande, D Wang, and H Masunaga. 2020. "A Satellite‐Based Estimate of Convective Vertical Velocity and Convective Mass Flux: Global Survey and Comparison with Radar Wind Profiler Observations." Geophysical Research Letters, 48(1), e2020GL090675, 10.1029/2020GL090675.

Dorsey K and D Feldman. 2020. Surface Atmosphere Integrated Field Laboratory. Ed. by Rolanda Jundt, ARM user facility. DOE/SC-ARM-20-016.

Serra Y, A Rowe, D Adams, and G Kiladis. 2020. "Kelvin Waves during GOAmazon and Their Relationship to Deep Convection." Journal of the Atmospheric Sciences, 77(10), 10.1175/JAS-D-20-0008.1.
Research Highlight

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