【摘要】 利用地闪定向仪（ＤＦ）和时间到达法（ＴＯＡ）定位技术，１９９７年３月～１９９８年６月在研 究范围内共计得到４０４４３１次地闪资料。分析了地闪的雷电流强度、回击数的气候概率 分布特征以及雷电参数的日变化及其空间分布的气候规律。正闪占总闪的比例仅为 ５．０３％，正负闪密度的高值中心均在（１１４°Ｅ，２３°Ｎ）附近。总体日变化特征明显，全天 有两个高值时段，分别为００～０６时和１２～１８时。与北方地区的雷电特征不同。结果表 明：雷电活动特征可以基本揭示本地区天气活动的时空分布的规律。更多还原

【Abstract】 Based on the lightning flash data in 1997 and 1998 in Guangdong area, the climatological probabilities of the strength and stroke number, the diurnal and the spatial distribution are studied respectively for negative and positive cloud-to-ground lightning in this paper. The ratio of positive to total lightning is 5.03 %, which is far lower than in the northern China. The results show that the climatological characteristics of lightning could exhibit the of climatological regularity of the convective activity.更多还原