| 云南中部一次雷暴过程的多普勒雷达和电场特征分析 |
| |
| 引用本文： | 马芳,张腾飞,尹丽云. 云南中部一次雷暴过程的多普勒雷达和电场特征分析[J]. 云南大学学报(自然科学版), 2011, 0(Z1) |
| |
| 作者姓名： | 马芳 张腾飞 尹丽云 |
| |
| 作者单位： | 云南大学大气科学系;云南省大气探测技术保障中心;云南省气象台; |
| |
| 基金项目： | 云南省科技计划项目资助(2009CA014) |
| |
| 摘 要： | 利用闪电定位系统、大气电场仪和多普勒雷达等多种探测资料,对2009年7月20日导致云南省中部地区发生5起雷电灾害事故的1次雷暴过程进行了分析.结果表明:在雷暴天气过程中,无论是大气电场仪范围内还是雷达回波内的地闪都是以负地闪占绝对主导地位;雷暴期间电场值在-12.540～13.907 kV/m之间剧烈变化,且不断向正向或负向突变;负地闪主要发生在强回波区,对应着径向速度场上的逆风区,成熟阶段增加的正地闪分散地出现在弱回波区中;整个雷暴过程中-10℃层回波强度维持在40 dBz以上,-20℃层回波强度在35 dBz以上,-10℃层和-20℃层雷达回波强度的每一次跳跃变化都对应着地闪频数的跳跃发展,且总在地闪频数变化之前11～30 min;回波顶高均大于9 km,地闪最密集时段,回波顶高保持在14 km左右.
|
| 关 键 词： | 地闪 大气电场 雷达对流回波 |
An application analysis of the diverse detection data about a thunderstorm in central Yunnan |
| |
| MA Fang,,ZHANG Teng-fei,YIN Li-yun. An application analysis of the diverse detection data about a thunderstorm in central Yunnan[J]. Journal of Yunnan University(Natural Sciences), 2011, 0(Z1) |
| |
| Authors: | MA Fang ZHANG Teng-fei YIN Li-yun |
| |
| Affiliation: | MA Fang1,2,ZHANG Teng-fei3,YIN Li-yun3(1.Department of Atmospheric Science,Yunnan University,Kunming 650091,China,2.Yunnan Atmospheric Sounding Technical Security Center,Kunming 650034,3.Yunnan Meteorological Observatory,China) |
| |
| Abstract: | Using many detection data such as the lightning location system,the atmospheric electric field instrument and Doppler Radar.A thunderstorm which caused five lightning disasters in central Yunnan on July 20,2009 are analyzed.The result shows that the negative lightning makes up the leading position whether it is in the atmospheric electric field instrument or in the echo.The electric field during thunderstorms ranges from-12.540 kV/m to 13.907 kV/m and it jumps from positive direction to negative direction c... |
| |
| Keywords: | cloud to ground lighing atmospheric electric field radar convective echo |
| 本文献已被 CNKI 等数据库收录！ |
|
