Abstract
AbstractIn this study, we have performed an analysis of lightning, precipitation, and visibility and numerical modeling to elucidate the relationship between air pollution and thunderstorms and to quantify the aerosol indirect effects on cloud development, precipitation, and lightning over the PRD area. Seven year measurements of precipitation, lightning flashes, and visibility from 2000 to 2006 have been analyzed in this area. To assess the effects of aerosols on cloud processes, precipitation, lightning activity, a WRF model with a two-moment bulk microphysical scheme has been employed to simulate a mesoscale convective system in this area. Sensitivity experiments have been performed to reflect aerosol conditions characteristic of both polluted and clean cases to further reveal the physical mechanism for the precipitation and lightning enhancement under the polluted aerosol condition. Note that the present modeling work only focuses on the indirect effect of aerosols, by which aerosols serve as CCN and hence affect precipitation and lightning activities of the thunderstorm event.KeywordsAerosolsThunderstormHeavy precipitationLightning
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