摘要
分析了农七师气象局1994～1996年71次闪电频数资料。结果表明，利用SD型闪电计数仪对闪电的时空分布特性进行连续监测，可识别炮点周围40km范围内的雷雨云和冰雹云。当雷暴天气系统移动时，闪电频数在50次／5min以上、闪击脉冲在10次／5min以上可作为识别雷雨云和冰雹的作业指标；冰雹云的峰前升度和峰后陡度均较大，闪电活动较活跃且维持时间较长，说明闪电发生频数与降雹之间存在密切联系。
71 time lightning frequency data from seventh agricultural division weather bureau between in 1994- 1996 was analyzed. The results showed that when SD lightning counter was used to continuously monitor the temporal and spatial distribution of lightning, the thunder cloud and hail cloud around 40 km of shot point all could be recognized. When the thunderstorm system moved, the lightening frequency of more than 50 times/5 min and lightning pulse of more than 10 time/5 min could be used as the operating index of recognizing thunder cloud and hail cloud.
出处
《安徽农业科学》
CAS
北大核心
2009年第15期7085-7087,共3页
Journal of Anhui Agricultural Sciences
关键词
闪电频数
冰雹云
雷雨云
Lightning frequency
Hail cloud
Thunder cloud
