kasacr: Ka-Band Scanning ARM Cloud Radar

The Ka-Band Scanning ARM Cloud Radar (KASACR) records cloud properties.

ARM’s scanning cloud radars are dual-frequency, dual-polarization Doppler radars mounted on a common scanning pedestal. Each pedestal includes a Ka-band radar (2kW peak power) and the deployment location determines whether the second radar is a W-band (1.7 kW peak power) or an X-band (20 kW peak power).

Beamwidths for Ka-bands paired with W-bands are roughly matched at 0.3 degrees. The X-band beamwidth is approximately 1 degree. Due to the narrow antenna beamwidth, ARM’s scanning cloud radars use scanning strategies unlike typical weather radars. Rather than focusing on plan position indicator, or PPI, scans, the Ka-SACR uses range height indicator, or RHI, scans at numerous azimuths to obtain cloud volume data. Measurements collected with the Ka-SACR are copolar and cross-polar radar reflectivity, Doppler velocity, spectra width and spectra when not scanning, and linear depolarization ratio.

Measurements

Locations

  • Fixed
  • AMF1
  • AMF2
  • AMF3

2020

Shell K, S de Szoeke, M Makiyama, and Z Feng. 2020. "Vertical Structure of Radiative Heating Rates of the MJO during DYNAMO." Journal of Climate, , 10.1175/JCLI-D-19-0519.1. ONLINE.

2019

Tyynelä J and A von Lerber. 2019. "Validation of Microphysical Snow Models Using in situ, Multifrequency, and Dual‐Polarization Radar Measurements in Finland." Journal of Geophysical Research: Atmospheres, 124(23), 10.1029/2019JD030721.

Kollias P, N Bharadwaj, E Clothiaux, K Lamer, M Oue, J Hardin, B Isom, I Lindenmaier, A Matthews, E Luke, S Giangrande, K Johnson, S Collis, J Comstock, and J Mather. 2019. "The ARM Radar Network: At the Leading-edge of Cloud and Precipitation Observations." Bulletin of the American Meteorological Society, , 10.1175/BAMS-D-18-0288.1. ONLINE.

ZHU Z, K Lamer, P Kollias, and EE Clothiaux. 2019. "The Vertical Structure of Liquid Water Content in Shallow Clouds as Retrieved from Dual‐Wavelength Radar Observations." Journal of Geophysical Research: Atmospheres, 124(24), 10.1029/2019JD031188.

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.

Mason S, R Hogan, C Westbrook, S Kneifel, D Moisseev, and L von Terzi. 2019. "The importance of particle size distribution and internal structure for triple-frequency radar retrievals of the morphology of snow." Atmospheric Measurement Techniques, 12(9), 10.5194/amt-12-4993-2019.

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

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.

Liu J and Z Li. 2019. "Aerosol properties and their influences on low warm clouds during the Two-Column Aerosol Project." Atmospheric Chemistry and Physics, 19(14), 10.5194/acp-19-9515-2019.

Matrosov S, M Maahn, and G de Boer. 2019. "Observational and modeling study of ice hydrometeor radar dual-wavelength ratios." Journal of Applied Meteorology and Climatology, 58(9), 10.1175/JAMC-D-19-0018.1.
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