kazr: Ka ARM Zenith Radar

The Ka-band ARM Zenith Radar (KAZR) remotely probes the extent and composition of clouds at millimeter wavelengths. The KAZR is a zenith-pointing Doppler radar that operates at a frequency of approximately 35 GHz. The main purpose of this radar is to determine the first three Doppler moments (reflectivity, vertical velocity, and spectral width) at a range resolution of approximately 30 meters from near-ground to nearly 20 km in altitude.

The KAZR replaces the millimeter-wavelength cloud radar (MMCR) and uses a new digital receiver that provides higher spatial and temporal resolution than the MMCR. In addition, spectral artifacts in the data are significantly reduced in the KAZR, allowing researchers to study cloud dynamics much more closely than with the MMCR.


  • Fixed
  • AMF1
  • AMF2
  • AMF3

Related Publications


Liu C and T Lavigne. 2019. One-Year Electric Field Study at the North Slope of Alaska Field Campaign Report. Ed. by Robert Stafford, ARM user facility. DOE/SC-ARM-19-016.

Jensen M, E Bruning, D Collins, A Fridlind, P Kollias, C Kuang, D Rosenfeld, A Ryzhkov, and A Varble. 2019. Tracking Aerosol Convective Interactions Experiment (TRACER) Science Plan. Ed. by Robert Stafford, DOE/SC-ARM-19-017.

Shapiro A, CK Potvin, JG Gebauer, AK Theisen, and NA Dahl. 2019. Improving Vertical Velocity Retrievals from Doppler Radar Observations of Convection Field Campaign Report. Ed. by Robert Stafford, ARM user facility. DOE/SC-ARM-19-015.

Maahn M, F Hoffmann, M Shupe, G de Boer, S Matrosov, and E Luke. 2019. "Can liquid cloud microphysical processes be used for vertically pointing cloud radar calibration?" Atmospheric Measurement Techniques, 12(6), doi:10.5194/amt-12-3151-2019.
Research Highlight

Schirle C, S Cooper, M Wolff, C Pettersen, N Wood, T L’Ecuyer, T Ilmo, and K Nygård. 2019. "Estimation of Snowfall Properties at a Mountainous Site in Norway Using Combined Radar and In Situ Microphysical Observations." Journal of Applied Meteorology and Climatology, 58(6), 10.1175/JAMC-D-18-0281.1.

Tridon F, C Planche, K MROZ, S Banson, A Battaglia, J Van Baelen, and W Wobrock. 2019. "On the realism of the rain microphysics representation of a squall line in the WRF model. Part I: Evaluation with multi-frequency cloud radar Doppler spectra observations." Monthly Weather Review, , 10.1175/MWR-D-18-0018.1. ONLINE.

Ghate V and M Cadeddu. 2019. "Drizzle and Turbulence Below Closed Cellular Marine Stratocumulus Clouds." Journal of Geophysical Research: Atmospheres, , 10.1029/2018JD030141. ONLINE.
Research Highlight

Zheng Y, D Rosenfeld, Y Zhu, and Z Li. 2019. "Satellite‐Based Estimation of Cloud Top Radiative Cooling Rate for Marine Stratocumulus." Geophysical Research Letters, 46(8), 10.1029/2019GL082094.
Research Highlight

Lamer K, B Puigdomènech Treserras, Z ZHU, B Isom, N Bharadwaj, and P Kollias. 2019. "Characterization of Shallow Oceanic Precipitation using Profiling and Scanning Radar Observations at the Eastern North Atlantic ARM Observatory." Atmospheric Measurement Techniques Discussions, , 10.5194/amt-2019-160.

Ghate V, D Mechem, M Cadeddu, E Eloranta, M Jensen, M Nordeen, and W Smith. 2019. "Estimates of entrainment in closed cellular marine stratocumulus clouds from the MAGIC field campaign." Quarterly Journal of the Royal Meteorological Society, 145(721), 10.1002/qj.3514.

View All Related Publications