超强台风“玛莉亚”闪电活动特征分析

Analysis of Lightning Activity Characteristics of Super Typhoon Maria

采用中国气象局提供的台风数据,全球闪电定位系统、福建省三维闪电定位系统提供的闪电数据以及福建省气象局提供的雷达数据,分析直接登陆福建的最强台风1808号超强台风“玛利亚”的闪电活动特征。结果表明,闪电活动主要发生在气旋稳定期与消散期的内核与外雨带,在台风强度迅速增强期间内核闪电活动最活跃,内核闪电的突然爆发对气旋强度加强有一定指示作用,台风登陆前闪电活动锐减,登陆一段时间后闪电陡增而后快速减少。闪电活动区域与雷达回波高于35 dBZ区域存在较好一致性。

Adopting the typhoon data provided by China Meteorological Administration,the lightning data afforded by world-wide lightning location network(WWLLN)and 3-dimensional lightning location system,and the radar data provided by Fujian Meteorological Information Center,the lightning activity characteristics of super typhoon Maria(No.1808)which directly landed in Fujian province were analyzed.The results show that the lightning activities mainly in cyclone stability and dissipation of kernel and outside rain belt,during the period of typhoon strength rapidly boost the kernel’s most active lightning activity,the kernel of lightning played a certain role in sudden burst strength of cyclone strengthen,to decrease the lightning activities before the typhoon,landing after a period of time the lightning surge and then shrinking fast.There is a good consistency between the lightning activity area and the radar echo area higher than 35 dBZ.