人工引发雷电对雷暴特性可能影响的观测与分析  

OBSERVATION AND ANALYSIS OF INFLUENCES OF ARTIFICIALLY TRIGGERED LIGHTNING ON CHARACTERISTICS OF THUNDERSTORM

作　　者：张义军[1] 言穆弘[1] 郄秀书[1] 张鸿发[1] 董万胜[1] 刘欣生[1] 

机构地区：[1]中国科学院兰州高原大气物理研究所

出　　处：《高原气象》1998年第4期412-419,共8页Plateau Meteorology

基　　金：国家自然科学基金项目;中国科学院重大项目;中国科学院"西部之光"计划

摘　　要：利用地面电场、地面降雨和雷达资料就人工引发雷电对雷暴特性的可能影响进行了初步分析和讨论。结果表明：就分析个例而言，人工引发雷电有可能影响雷暴的电特征，在人工引发雷电后约２０ｍｉｎ时间内没有闪电发生，地面电场减弱，极性发生变化；人工引发雷电后地面降雨有短时间的增强，大约６ｍｉｎ地面降雨率达到峰值；雷暴云的微物理结构也发生变化，高ＺＨ值由云中层移向底部，高负ＺＤＲ中心区随之下移，范围减小并分成云底和中层两个高负中心。讨论了产生这种可能影响的物理原因。The ground electric field, precipitation and radar data were analyzed and the influences of artificially triggered lightning on characteristics of thunderstorm were discussed. The results indicate that electric characteristics of thunderstorm may be influenced by artificially triggered lightning. For this thunderstorm, there was not any lightning during 20min and electric field on the ground was reduced after two artificially triggered lightning. The precipitation increased after artificially triggered lightning and maximum value of precipitation lag the artificially triggered lightning by a time of about 6min. From the radar data, we know that higher Z H areas moved from middle to bottom of thunderstorm and higher Z DR areas with maximum value of -1.6dB moved toward the bottom of thunderstorm after artificially triggered lightning. The reason which caused these changes were discussed.

关 键 词：人工引发雷电 雷暴 降雨 影响观测 

分 类 号：P427.322[天文地球—大气科学及气象学] P446