中文摘要：

利用雷暴云偶极性电结构理论,结合卫星和雷达资料分析了不同荷电结构下地面电场。结果表明：当正电荷中心高度越高、负电荷中心高度越低,形成的地面负电场越大,越有利于地闪的形成;负地闪发生后或云砧下方,地面电场成正极性,易引发正地闪;地闪分布与雷达回波、卫星云图中雷暴云位置基本一致,结合雷达和卫星资料可初步判断正/负地闪发生位置。

英文摘要：

Based on the positive dipole structure of thunderstorm, combining with satellite data and radar data,this paper analyses the electric fields on the ground aroused by different electricity structures of thunderstorm. Results show that the higher center position of the positive charge and the lower ones of the negative charge will lead to stronger induced negative electric field,all of these will make the occurrence of cloud-to-ground lightning easier. When the cloud-to-ground lightning happens,the negative cloud-to-ground lightning takes place first and consumes some negative charges, then the positive ones will distribute in the plume, which will easily cause the occurrence of the positive cloud to-ground lightning. Through analyzing radar data and satellite image the cloud-to-ground lightning location can be seen.