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


Yang F, E Luke, P Kollias, A Kostinski, and A Vogelmann. 2018. "Scaling of Drizzle Virga Depth With Cloud Thickness for Marine Stratocumulus Clouds." Geophysical Research Letters, 45(8), 10.1029/2018GL077145.
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Zhuang Y, R Fu, and H Wang. 2018. "How do environmental conditions influence vertical buoyancy structure and shallow-to-deep convection transition across different climate regimes?" Journal of the Atmospheric Sciences, 75(6), 10.1175/JAS-D-17-0284.1.

Mechem D and S Giangrande. 2018. "The Challenge of Identifying Controls on Cloud Properties and Precipitation Onset for Cumulus Congestus Sampled During MC3E." Journal of Geophysical Research: Atmospheres, 123(6), doi:10.1002/2017JD027457.
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Bharadwaj N, A Lindenmaier, B Isom, J Hardin, A Matthews, and K Johnson. 2018. FY 2018 ARM Radar Plan. Ed. by Robert Stafford, ARM Climate Research Facility. DOE/SC-ARM-18-014.

Kollias P, EE Clothiaux, K Lamer, N Bharadwaj, JM Comstock, and A Matthews. 2018. ARM Radar Engineering and Radar Science 2017 6th Workshop Report. Ed. by Robert Stafford, ARM Climate Research Facility. DOE/SC-ARM-TR-212.

Oue M, P Kollias, A Ryzhkov, and E Luke. 2018. "Toward Exploring the Synergy Between Cloud Radar Polarimetry and Doppler Spectral Analysis in Deep Cold Precipitating Systems in the Arctic." Journal of Geophysical Research: Atmospheres, 123(5), doi: 10.1002/2017JD027717.
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Hoover K, J Mecikalski, TJ Lang, X Li, T Castillo, and T Chronis. 2018. "Use of an End-to-End-Simulator to analyze CYGNSS." Journal of Atmospheric and Oceanic Technology, 35(1), 10.1175/JTECH-D-17-0036.1.


Pennypacker S and R Wood. 2017. "A Case Study in Low Aerosol Number Concentrations Over the Eastern North Atlantic: Implications for Pristine Conditions in the Remote Marine Boundary Layer." Journal of Geophysical Research – Atmospheres, 122(22), doi:10.1002/2017JD027493.
Research Highlight

Johnson K, T Toto, and S Giangrande. 2017. Ka-Band ARM Zenith Radar Corrections Value-Added Product. Ed. by Robert Stafford, ARM Climate Research Facility. DOE/SC-ARM-TR-203.

Arulraj M and A Barros. 2017. "Shallow Precipitation Detection and Classification Using Multifrequency Radar Observations and Model Simulations." Journal of Atmospheric and Oceanic Technology, 34(9), 10.1175/JTECH-D-17-0060.1.

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