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Applications of a Spatially Variable Advection Correction Technique for Temporal Correction of Dual-Doppler Analyses of Tornadic Supercells.
- Source :
-
Monthly Weather Review . Sep2018, Vol. 146 Issue 9, p2949-2971. 23p. - Publication Year :
- 2018
-
Abstract
- 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 toWSR-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. [ABSTRACT FROM AUTHOR]
Details
- Language :
- English
- ISSN :
- 00270644
- Volume :
- 146
- Issue :
- 9
- Database :
- Academic Search Index
- Journal :
- Monthly Weather Review
- Publication Type :
- Academic Journal
- Accession number :
- 131651927
- Full Text :
- https://doi.org/10.1175/MWR-D-17-0360.1