期刊
MONTHLY WEATHER REVIEW
卷 146, 期 9, 页码 2949-2971出版社
AMER METEOROLOGICAL SOC
DOI: 10.1175/MWR-D-17-0360.1
关键词
Supercells; Tornadoes; Radars; Radar observations
资金
- NSF [AGS-1262048, AGS-1560945]
- National Science Foundation [AGS-135698]
In many instances, synchronization of Doppler radar data among multiple platforms for multiple-Doppler analysis is challenging. This study describes the production of dual-Doppler wind analyses from several case studies using data from a rapid-scanning, X-band, polarimetric, Doppler radar-the RaXPol radar-and data from nearby WSR-88Ds. Of particular interest is mitigating difficulties related to the drastic differences in scanning rates of the two radars. To account for differences in temporal resolution, a variational reflectivity tracking scheme [a spatially variable advection correction technique (SVAC)] has been employed to interpolate (in a Lagrangian sense) the coarser temporal resolution data (WSR-88D) to the times of the RaXPol volume scans. The RaXPol data and temporally interpolated WSR-88D data are then used to create quasi-rapid scan dual-Doppler analyses. This study focuses on the application of the SVAC technique to WSR-88D data to create dual-Doppler analyses of three tornadic supercells: the 19 May 2013 Edmond-Carney and Norman-Shawnee, Oklahoma, storms and the 24 May 2016 Dodge City, Kansas, storm. Results of the dual-Doppler analyses are briefly examined, including observations of the Z(DR) columns as a proxy for updrafts. Potential improvements to this technique are also discussed.
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