云地之间的放电现象我们称为落雷。落雷常引起火灾、人员伤亡、建筑物塌裂、构筑物折断、树木损毁、供电通讯系统中断等灾害,落雷所造成的灾害称为雷灾。近年来,随着全球气候的变暖,我国中纬度地区强对流天气出现频率明显增多,由此而带来的雷灾也频繁发生。据不完全统计,我国中 The phenomenon of discharge between the clouds we call lightning. Frequent lightning strikes can cause fire, casualties, collapse of buildings, breakage of structures, destruction of trees and disruption of power supply and communication systems. Disasters caused by lightning strikes are called mine disasters. In recent years, as the global climate warms, the frequency of strong convective weather in mid-latitudes of our country has obviously increased, and the resulting lightning disasters have also occurred frequently. According to incomplete statistics, China