气象科学2009，Vol.29Issue(5)：657-663,7.
电场时序差分在雷电预警中的有效性分析
Validity analysis of electric field temporal difference in thunderstorm warning
摘要
Abstract
At present, threshold method is commonly applied in thunderstorm warning with ground atmospheric electric field mill in China. Multi-threshold of electric field observations is used to give early warning directly. But it easily makes mistake and gives failure reports in application. Temporal difference electric field on the ground, which represents changing rate electric field with time, can reflect the intensity of atmospheric electric field change. The basic characteristic of electric field temporal difference was found with analyzing electric field data of fair weather and thunderstorm weather. Electric field temporal difference of typical thunderstorm processes was analyzed with the lightning positioning data of SAFIR3000. Two warning cases, one with thunderstorm and the other without thunderstorm, were selected to analyze validity of electric field temporal difference in thunderstorm warning. Result showed that electric field temporal difference can help to improve efficiency of thunderstorm warning.关键词
大气电场/雷电预警/时序差分Key words
Electric field/Thunderstorm warning/Temporal difference分类
天文与地球科学引用本文复制引用
王强,王建初,顾宇丹..电场时序差分在雷电预警中的有效性分析[J].气象科学,2009,29(5):657-663,7.基金项目
上海市科委项目(08dz050900),上海市气象局面上课题(ms200807) （08dz050900）
