2013年“西马仑”台风大气电场特征分析

利用中国气象局提供的台风定位资料和厦门市气象局测得的大气电场等资料,采用对比分析等方法分析了1308号台风"西马仑"登陆后的大气电场变化特征及其与闪电和降水的关系。分析结果表明:测站大气电场、降水和地闪的变化主要受"西马仑"台风后部云系影响。降水强度与负电场强度之间有着较好的对应关系。强降水时段地闪频次较低;地闪活动滞后于大气电场变化5~20min,地闪密集时段也是大气电场跳变最为剧烈的时段。

Characteristics analysis on atmospheric electric field of Cimaron typhoon of 2013

With the comparison analysis method, the typhoon positioning data from China Meteorological Administration and atmospheric electric field observation from Xiamen Meteorological Bureau were used to analyze the variation characteristics of atmospheric electric field and the relation with lightning and precipitation after the landing of typhoon Cimaron(No. 201308). Results show that the dramatic changes of atmospheric electric field, precipitation and ground flash were mainly affected by the rear cloud system of Cimaron typhoon. A remarkable correspondence existed between the precipitation intensity and the negative atmospheric electric field intensity. Lower frequency of ground flash happened during the strong rainfall period. The lightning activity lagged 5-20 min behind the atmospheric electric field variation, and the lightning mass outbreak period was also the most intensive transition period of atmospheric electric field.