首页 | 官方网站   微博 | 高级检索  
     

北京强雷暴的地闪活动与雷达回波和降水的关系
引用本文:李建华,郭学良,肖稳安.北京强雷暴的地闪活动与雷达回波和降水的关系[J].南京气象学院学报,2006,29(2):228-234.
作者姓名:李建华  郭学良  肖稳安
作者单位:1. 南京信息工程大学,电子工程系,江苏,南京,210044;威海市气象局,山东,威海,264200
2. 中国科学院,大气物理研究所,北京,100029
3. 南京信息工程大学,电子工程系,江苏,南京,210044
基金项目:江苏省重点实验室基金;中国科学院资助项目;中国科学院方向性项目;国家科技攻关项目
摘    要:对2000-2001年发生在北京地区的8次天气过程进行了闪电与降水特征的统计分析,并针对两类典型暴雨和冰雹天气进行了详细的雷达、闪电特征分析。结果表明:降雨和降雹天气的地闪特性具有明显差异。降雹天气的正闪比例较大,特别在降雹前正闪频数增加剧烈。闪电通常发生在45dBZ以上的回波区,比目前“闪电在中纬度通常发生在30~45dBZ”等其他一些研究结果偏高。

关 键 词:地闪  强对流天气  雷达回波
文章编号:1000-2022(2006)02-0228-07
收稿时间:01 30 2005 12:00AM
修稿时间:2005-01-302005-05-10

Relationship of Cloud-Ground Lightning Activities with Radar Echo and Precipitation in Storms of Beijing
LI Jian-hua,GUO Xue-liang,XIAO Wen-an.Relationship of Cloud-Ground Lightning Activities with Radar Echo and Precipitation in Storms of Beijing[J].Journal of Nanjing Institute of Meteorology,2006,29(2):228-234.
Authors:LI Jian-hua  GUO Xue-liang  XIAO Wen-an
Affiliation:1. Department of Electronic Engineering,NUIST,Nanjing 210044,China;2. Weihai Meteorological Bureau,Weihai 264200,China; 3. Institute of Atmospheric Physics,Chinese Academy of Sciences,Beijing 10029,China
Abstract:The observational characteristics of cloud-ground lightnings and precipitation for 8 storms during 2000-2001 are investigated,and radar echo, and lightning feathures for two types of heavy-rain and hail-producing weather are analyzed detailedly. There are apparent differences of lightning features between heavy-rain and hail-producing weather. The hail-producing weather has more positive lightnings, and especially at the time just before hailfall the positive lightning frequency increases rapidly. In addition ,it is also found that lightnings often occurred within radar echoes of more than 45 dBZ in the studied cases, which is a little higher than the 30-45 dBZ in mid-latitude region suggested by previous studies.
Keywords:cloud-to-ground lightning  convective weather  radar echo
本文献已被 CNKI 维普 万方数据 等数据库收录!
设为首页 | 免责声明 | 关于勤云 | 加入收藏

Copyright©北京勤云科技发展有限公司    京ICP备09084417号-23

京公网安备 11010802026262号