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UNIVERSITY OF BUCHAREST
FACULTY OF PHYSICS Guest
2024-11-21 20:37 |
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Conference: Bucharest University Faculty of Physics 2008 Meeting
Section: Atmosphere and Earth Science; Environment Protection
Title:
Radar characteristics of tropical-like severe storms in Romania
Authors:
A. Bell(1) and F. Martin-Leon(2)
Affiliation:
(1) National Meteorological Administration, Bucharest, Romania,
(2) Instituto Nacional de Meteorologia, Madrid, Spain,
E-mail
stc@inm.es,aurora.stan@meteo.inmh.ro
Keywords:
Radar,severe storms, conceptual models
Abstract:
In the last years Romania has experienced unusual destructive meteorological events associated with climate change. Among the nee features that challenged the forecasters is the so called “tropical-like structure” of some severe cases. The convective structures observed with Doppler radars gave valuable insights that helped to develop regional conceptual models for initiation of deep convection. However, some particularities remained unexplained with the classic conceptual models used in forecasting and nowcasting severe weather. Our study underpins the need to improve the knowledge of Mediterranean and Black-Sea systems, possibly introducing new regional conceptual models and/or refining the current ones.The most difficult cases presented some tropical features that are shown here. We analyze the vertical structure of the systems, the precipitation type and vertical cross section characteristics of radar reflectivity and radial velocity together with other atmospheric parameters. All these tropical-like storms produced destructive flash-floods, tornadoes and severe hail. In this presentation we will focus on the radar tropical-like structures and unusual behavior of these storms, rather than in the associated phenomena, in order to better describe the particularities of these storms initiation and evolution. We hope to bring important information for the operational service that has to early identify these structures and we make correlation with similar situations in different coastal regions around the world.
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