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Predicting the potential for lightning activity in mediterranean storms based on the WRF model dynamic and microphysical fields
Yair, Yoav; Lynn, Barry; Price, Colin; Kotroni, Vassiliki; Lagouvardos, Konstantinos; Morin, Efrat; Mugnai, Alberto; Llasat Botija, María del Carmen
Universitat de Barcelona
A new parameter is introduced: the lightning potential index (LPI), which is a measure of the potential for charge generation and separation that leads to lightning flashes in convective thunderstorms. The LPI is calculated within the charge separation region of clouds between 0 C and 20 C, where the noninductive mechanism involving collisions of ice and graupel particles in the presence of supercooled water is most effective. As shown in several case studies using the Weather Research and Forecasting (WRF) model with explicit microphysics, the LPI is highly correlated with observed lightning. It is suggested that the LPI may be a useful parameter for predicting lightning as well as a tool for improving weather forecasting of convective storms and heavy rainfall.
Llamps
Tempestes
Previsió del temps
Models matemàtics
Mediterrània (Regió)
Lightning
Storms
Weather forecasting
Mathematical models
Mediterranean Region
(c) American Geophysical Union, 2010
Article
info:eu-repo/semantics/publishedVersion
American Geophysical Union
         

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