34th Conference on Radar Meteorology


A comparison of CASA and NEXRAD data from supercells observed 10 February 2009

J. Brotzge, CAPS/Univ. of Oklahoma, Norman, OK; and V. Mahale, K. Brewster, J. Gao, K. Hondl, K. W. Thomas, and M. Xue

The Engineering Research Center for Collaborative Adaptive Sensing of the Atmosphere (CASA) is funded by the National Science Foundation with the objective to create low-power, low-cost, short-range (X-band) radars that can be deployed on cell-phone towers. Multiple CASA radars will be deployed collectively, and together comprise an integrated network with the radars operating collaboratively and adaptively, sensing when and where end-user needs are greatest. A demonstration testbed of four CASA radars was deployed in Oklahoma in 2006, and since that time has operated each spring and fall during convective events.

On 10 February 2009, a line of four supercells initiated within and to the southwest of the CASA testbed. These cells moved northeast through the center of the CASA network during a three hour period. At least one supercell exhibited significant low-level rotation visible in the CASA radial velocity data that was not observed from NEXRAD. This study will compare directly the CASA and NEXRAD reflectivity and radial velocity data observed during the evolution of these storms. CASA derived products, such as a 3DVar wind analysis and real-time forecasts, will be reviewed. The implications of higher spatial and temporal resolution radar data on warning operations will be discussed.

extended abstract  Extended Abstract (1.7M)

Poster Session 12, Test beds / Nowcasting
Thursday, 8 October 2009, 1:30 PM-3:30 PM, President's Ballroom

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