青岛地区电场仪资料在一次雷暴天气过程中的应用分析

利用大气电场仪资料，结合天气实况、天气雷达和闪电定位仪等资料，对2013年7月1日青岛地区一次雷暴天气过程进行了综合分析。结果表明，当地面电场强度曲线在几十到几百毫秒量级内发生极性反转，变化幅度在2 kV/m以上，且完成后电场值会迅速回到极性反转前的电场值附近时，可以判断为发生了一次地闪。单站电场强度曲线可以反映出雷暴云与测站间距离的变化，闪电发生前电场强度的增加可为雷电预警提供时间。大气电场仪组网监测资料可以对雷暴云的移动路径做出判断。综合分析大气电场仪组网数据、天气雷达以及闪电定位资料等多源资料，可以更好地判断雷暴云的活动状况，提高雷电的预警准确率和时间提前量。

A case study of forewarning with atmospheric field mill for thunderstorm weather in Qingdao

By using data of atmospheric electric field mills,weather radars and lighting position indicators,a thunderstorm on 1 July 2013 in Qingdao was studied.The results show that on the curve of measured earth surface electric intensity,when a polarity reversal greater than 2 kV/m within tens to hundreds of milliseconds is observed,and followed by an electric intensity swift falling back to the previous data value range,one occurrence of cloud-to-ground lighting can be confirmed.As measured electric intensity curve presents the change of the distance between the thunder cloud and the observation point, lighting forecasting and warning can be made via measuring the rise of the atmospheric electric intensity in advance.Using atmospheric electric field observation network, the track of the thunder cloud can be deduced. By comprehensive analysis of data of atmospheric electric field observation network, weather radars and lighting location systems, the activity of the thunder cloud can be better captured, and lighting forecasting and warning can be improved.