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.

Locations

  • Fixed
  • AMF1
  • AMF2
  • AMF3

2019

Varble A, S Nesbitt, P Salio, E Avila, P Borque, P DeMott, G McFarquhar, S van den Heever, E Zipser, D Gochis, R Houze, M Jensen, P Kollias, S Kreidenweis, R Leung, K Rasmussen, D Romps, and C Williams. 2019. Cloud, Aerosol, and Complex Terrain Interactions (CACTI) Field Campaign Report. Ed. by Robert Stafford, ARM user facility. DOE/SC-ARM-19-028.

Radenz M, J Bühl, P Seifert, H Griesche, and R Engelmann. 2019. "peakTree: a framework for structure-preserving radar Doppler spectra analysis." Atmospheric Measurement Techniques, 12(9), 10.5194/amt-12-4813-2019.

Zhang D, A Vogelmann, P Kollias, E Luke, F Yang, D Lubin, and Z Wang. 2019. "Comparison of Antarctic and Arctic Single‐Layer Stratiform Mixed‐Phase Cloud Properties Using Ground‐Based Remote Sensing Measurements." Journal of Geophysical Research: Atmospheres, 124, 10.1029/2019JD030673. ONLINE.
Research Highlight

Kollias P, B Puigdomènech Treserras, and A Protat. 2019. "Calibration of the 2007–2017 record of Atmospheric Radiation Measurements cloud radar observations using CloudSat." Atmospheric Measurement Techniques, 12(9), 10.5194/amt-12-4949-2019.

Silber I, A Fridlind, J Verlinde, A Ackerman, Y Chen, D Bromwich, S Wang, M Cadeddu, and E Eloranta. 2019. "Persistent Supercooled Drizzle at Temperatures below ‐25°C Observed at McMurdo Station, Antarctica." Journal of Geophysical Research: Atmospheres, , 10.1029/2019JD030882. ONLINE.
Research Highlight

Li H and D Moisseev. 2019. "Melting layer attenuation at Ka‐ and W‐bands as derived from multi‐frequency radar Doppler spectra observations." Journal of Geophysical Research: Atmospheres, , 10.1029/2019JD030316. ONLINE.
Research Highlight

Silber I, J Verlinde, S Wang, D Bromwich, A Fridlind, M Cadeddu, E Eloranta, and C Flynn. 2019. "Cloud Influence on ERA5 and AMPS Surface Downwelling Longwave Radiation Biases in West Antarctica." Journal of Climate, 32(22), 10.1175/JCLI-D-19-0149.1.

Kalesse H, T Vogl, C Paduraru, and E Luke. 2019. "Development and validation of a supervised machine learning radar Doppler spectra peak-finding algorithm." Atmospheric Measurement Techniques, 12(8), 10.5194/amt-12-4591-2019.

Simpfendoerfer L, J Verlinde, J Harrington, M Shupe, Y Chen, E Clothiaux, and J Golaz. 2019. "Formation of Arctic Stratocumuli through Atmospheric Radiative Cooling." Journal of Geophysical Research: Atmospheres, 124(16), 10.1029/2018JD030189.

Tian J, X Dong, B Xi, C Williams, and P Wu. 2019. "Estimation of liquid water path below the melting layer in stratiform precipitation systems using radar measurements during MC3E." Atmospheric Measurement Techniques, 12(7), 10.5194/amt-12-3743-2019.


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