摘要: Data on lightning incidence are first examined. Expressions are derived relating lightning incidence to the monthly thunderstorm-day statistic,to diurnal variation of activity,and to structure height. By using these expressions th... 展开 Data on lightning incidence are first examined. Expressions are derived relating lightning incidence to the monthly thunderstorm-day statistic,to diurnal variation of activity,and to structure height. By using these expressions the number of lightning strikes to be expected over any period of time can be estimated,on a climatological basis,for a structure of known height located anywhere in the world. The following physical parameters of lightning are then discussed;peak current,time to peak current,rate of current rise,magnitude and duration of continuing currents,total charge transfer,number of strokes,and time between. 收起