Applications of a Spatially Variable Advection Correction Technique for Temporal Correction of Dual-Doppler Analyses of Tornadic Supercells
Applications of a Spatially Variable Advection Correction Technique for Temporal Correction of Dual-Doppler Analyses of Tornadic Supercells
复制标题
空间可变平流校正技术在龙卷超级单体双多普勒分析时间校正中的应用
DOI：
10.1175/mwr-d-17-0360.1
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发表时间：
2018
影响因子：
3.2
通讯作者：
D. Reif
中科院分区：
文献类型：
--
作者：
Zachary B. Wienhoff;H. Bluestein;Louis J. Wicker;J. Snyder;A. Shapiro;C. Potvin;J. Houser;D. Reif
在许多情况下，多个平台之间多普勒雷达数据的同步是多个多普勒分析的挑战。雷达（RAXPOL雷达）和附近WSR-88D的数据。雷达是为了解释临时分辨率的差异，已聘请了变异反射率跟踪方案（一种空间可变的对流校正技术（SVAC）] Raxpol的体积扫描。 SVAC技术在WSR-88D数据中的应用，以创建三个龙卷风超级电池的双重多普勒分析：2013年5月19日，埃德蒙·卡尼（Edmond-Carney）和诺曼 - 肖尼（Norman-Carney）和俄克拉荷马州（Oklahoma），风暴和2016年5月24日，堪萨斯州道奇市，堪萨斯州，堪萨斯州简要研究了双重多普勒分析，包括对ZDR柱作为上升的代理进行观察。
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 ZDR columns as a proxy for updrafts. Potential improvements to this technique are also discussed.