Physical Modeling of Positive Multistrike Lightning Formation

The first results of the physical modeling positive multistrike lightning formation processes using positively charged artificial thunderstorm cells are presented. Experimental studies have shown a significant influence number and groups model hydrometeors introduced into them on probability initiation repeated strikes. It was found that with an increased hydrometeors, discharges increases several times. When second group has been cell, or when increased, discharge almost in three four times respectively. revealed that, depending arrangement hydrometeor thundercloud cells, from may proceed both “connection” uncharged areas lower cell upper cell. parameters impulse current pulses between ground were determined. increasing groups, value charge neutralized during stages increases. forming 20–30% more cloud than single discharge. observed about half cases, radiation power amplitude at higher This article discusses some possible reasons for such ratio discharges. is assumed discovered large characteristics indicate key hail arrays strikes bipolar lightning. obtained show polarity, together prospects investigation