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Article

C-Band Dual-Doppler Retrievals in Complex Terrain: Improving the Knowledge of Severe Storm Dynamics in Catalonia

1
Department of Applied Physics, University of Barcelona, 08028 Barcelona, Spain
2
Earth Observing Laboratory, National Center for Atmospheric Research, Boulder, CO 80301, USA
3
Meteorological Service of Catalonia, 08029 Barcelona, Spain
4
Department of Atmospheric Sciences, Colorado State University, Fort Collins, CO 80521-4593, USA
*
Author to whom correspondence should be addressed.
Remote Sens. 2020, 12(18), 2930; https://doi.org/10.3390/rs12182930
Received: 16 July 2020 / Revised: 2 September 2020 / Accepted: 7 September 2020 / Published: 10 September 2020
(This article belongs to the Special Issue Estimating Meteorological Variables by Remote Sensing Data)
Convective activity in Catalonia (northeastern Spain) mainly occurs during summer and autumn, with severe weather occurring 33 days per year on average. In some cases, the storms have unexpected propagation characteristics, likely due to a combination of the complex topography and the thunderstorms’ propagation mechanisms. Partly due to the local nature of the events, numerical weather prediction models are not able to accurately nowcast the complex mesoscale mechanisms (i.e., local influence of topography). This directly impacts the retrieved position and motion of the storms, and consequently, the likely associated storm severity. Although a successful warning system based on lightning and radar observations has been developed, there remains a lack of knowledge of storm dynamics that could lead to forecast improvements. The present study explores the capabilities of the radar network at the Meteorological Service of Catalonia to retrieve dual-Doppler wind fields to study the dynamics of Catalan thunderstorms. A severe thunderstorm that splits and a tornado-producing supercell that is channeled through a valley are used to demonstrate the capabilities of an advanced open source technique that retrieves dynamical variables from C-band operational radars in complex terrain. For the first time in the Iberian Peninsula, complete 3D storm-relative winds are obtained, providing information about the internal dynamics of the storms. This aids in the analyses of the interaction between different storm cells within a system and/or the interaction of the cells with the local topography. View Full-Text
Keywords: dual-Doppler retrievals; C-band radar; operational radar; severe weather; storm dynamics; topography; nowcasting dual-Doppler retrievals; C-band radar; operational radar; severe weather; storm dynamics; topography; nowcasting
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MDPI and ACS Style

del Moral, A.; Weckwerth, T.M.; Rigo, T.; Bell, M.M.; Llasat, M.C. C-Band Dual-Doppler Retrievals in Complex Terrain: Improving the Knowledge of Severe Storm Dynamics in Catalonia. Remote Sens. 2020, 12, 2930. https://doi.org/10.3390/rs12182930

AMA Style

del Moral A, Weckwerth TM, Rigo T, Bell MM, Llasat MC. C-Band Dual-Doppler Retrievals in Complex Terrain: Improving the Knowledge of Severe Storm Dynamics in Catalonia. Remote Sensing. 2020; 12(18):2930. https://doi.org/10.3390/rs12182930

Chicago/Turabian Style

del Moral, Anna, Tammy M. Weckwerth, Tomeu Rigo, Michael M. Bell, and María C. Llasat 2020. "C-Band Dual-Doppler Retrievals in Complex Terrain: Improving the Knowledge of Severe Storm Dynamics in Catalonia" Remote Sensing 12, no. 18: 2930. https://doi.org/10.3390/rs12182930

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