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A mediterranean nocturnal heavy rainfall and tornadic event. Part II: total lightning analysis
Pineda Ruegg, Nicolau; Bech, Joan; Rigo, Tomeu; Montañá Puig, Juan
Universitat Politècnica de Catalunya. Departament d'Enginyeria Elèctrica
On the night from 1st to 2nd of November 2008, a multi-cell storm coming from theMediterranean produced severe weather in the coastal area of Catalonia (NE Spain): groundlevelstrong damaging wind gusts, a tornado – which caused F2 damage – and heavy rainfall. Ageneral overview of the synoptic framework, damage observed and a radar analysis is given inthe first part of the study. This second part is mostly centered on the detailed analysis of thetotal lightning behavior, its relationship with radar-derived storm parameters, and totallightning correlation with hazardous weather. The purpose is to bring more evidence about theoutstanding role of total lightning in severe weather surveillance tasks. The analysis of thestorm cells life cycle has showed similar trends between the total lighting flash rates and radarderivedparameters like the area of reflectivity above 30 dBZ at 7-km. Regarding lightningtrends, a lightning “jump” pattern – an abrupt increase of the total lightning rate in a shortperiod of time – has been related to severe weather. On the contrary, cloud-to-ground lightningdata did not show any pattern related to severe weather. In comparison to other parameters,like the IC:CG ratio, the lightning “jump” pattern seems more robust to forecast in a short-termbasis the possible occurrence of severe weather.
2012-05-11
Àrees temàtiques de la UPC::Enginyeria agroalimentària::Ciències de la terra i de la vida::Climatologia i meteorologia
Àrees temàtiques de la UPC::Energies::Energia elèctrica::Electricitat
Tornadoes
Lightning
Tornados
Llamps
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