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.

Measurements

Locations

  • Fixed
  • AMF1
  • AMF2
  • AMF3

Related Publications

2018

Ghate V, P Kollias, S Crewell, A Fridlind, T Heus, U Löehnert, M Maahn, G McFarquhar, D Moisseev, M Oue, M Wendisch, and C Williams. 2018. "The Second ARM Training and Science Application Event: Training the Next Generation of Atmospheric Scientists." Bulletin of the American Meteorological Society, , 10.1175/BAMS-D-18-0242.1.

Zheng Y, D Rosenfeld, and Z Li. 2018. "The Relationships Between Cloud Top Radiative Cooling Rates, Surface Latent Heat Fluxes, and Cloud-Base Heights in Marine Stratocumulus." Journal of Geophysical Research: Atmospheres, , 10.1029/2018JD028579.

Williams C, M Maahn, J Hardin, and G de Boer. 2018. "Clutter mitigation, multiple peaks, and high-order spectral moments in 35 GHz vertically pointing radar velocity spectra." Atmospheric Measurement Techniques, 11(9), 10.5194/amt-11-4963-2018.

Chandra A, P Zuidema, S Krueger, A Kochanski, S de Szoeke, and J Zhang. 2018. "Moisture distributions in tropical cold pools from equatorial Indian Ocean observations and cloud-resolving simulations." Journal of Geophysical Research: Atmospheres, , 10.1029/2018JD028634. ONLINE.

Yu H, R Johnson, P Ciesielski, and H Kuo. 2018. "Observation of Quasi-2-Day Convective Disturbances in the Equatorial Indian Ocean during DYNAMO." Journal of the Atmospheric Sciences, 75(9), 10.1175/JAS-D-17-0351.1.

Varble A, S Nesbit, P Salio, E Zipser, S van den Heever, G McFarquhar, P Kollias, S Kreidenweis, P DeMott, M Jensen, R Houze, Jr., K Rasmussen, R Leung, D Romps, D Gochis, E Avila, and C Williams. 2018. Cloud, Aerosol, and Complex Terrain Interactions (CACTI) Science Plan. Ed. by Robert Stafford, DOE ARM Climate Research Facility. DOE/SC-ARM-17-004.

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.
Research Highlight

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.

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.

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.
Research Highlight


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