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Dual‐Polarization Phased Array Radar Observations of Quasi‐Linear Convective System Tornadic Mesovortices

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Publicado en:Geophysical Research Letters vol. 52, no. 23 (Dec 16, 2025)
Autor principal: Alford, A. Addison
Otros Autores: Miller, Rachel L., Kuster, Charles M.
Publicado:
John Wiley & Sons, Inc.
Materias:
National Oceanic & Atmospheric Administration > NOAA
United States > US
Oklahoma
Doppler effect
Cold
Radar arrays
Polarization
Tornadoes
Downdraft
Phased arrays
Evaporation
Gust front
Radar
Convective systems
Environmental
Acceso en línea:Citation/Abstract
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Resumen:Quasi‐linear convective system (QLCS) mesovortices produce a non‐trivial fraction of tornadoes across the United States each year. Tornadoes from QLCS mesovortices evolve rapidly on time scales less than that observed by conventional weather radars. In this study, a well‐calibrated, dual‐polarization phased array radar (PAR) is used to examine three tornadic mesovortices in the 27 February 2023 QLCS in central Oklahoma, with rapid volumetric scanning strategies that included dense elevation angles. Through examining dual‐polarization profiles and three‐dimensional wind estimates around the mesovortices, we show that the mesovortices examined were associated with (a) downdrafts prior to tornadogenesis, (b) increased convergence along the QLCS gust front ahead of the downdrafts, and (c) dual‐polarization profiles that suggest evaporation and precipitation drove the downdrafts. This study represents the first time a dual‐polarization PAR has been used to document tornadic QLCS mesovortices.
ISSN:0094-8276
1944-8007
DOI:10.1029/2025GL115283
Fuente:Science Database