西太平洋台风最大风速与闪电活动特征  

Relationship between the maximum winds and lightning activity of 55 typhoons over the western Pacific during 2005 and 2010

作　　者：杨宁[1,2] 张其林[1,2] 

机构地区：[1]南京信息工程大学气象灾害省部共建教育部重点实验室,江苏南京210044 [2]南京信息工程大学大气物理学院,江苏南京210044

出　　处：《大气科学学报》2012年第4期415-422,共8页Transactions of Atmospheric Sciences

基　　金：国家自然科学基金资助项目(40975002);公益性行业科研专项(GYHY200806014;GYHY2007622)

摘　　要：利用全球闪电定位网(World Wide Lightning Location Network,WWLLN)获取的闪电定位资料和中国气象局上海台风所提供的台风路径数据,统计分析了2005—2010年在西太平洋洋面上发生的55次台风过程中闪电活动特征及闪电频数与最大风速的相关性。结果表明,在西太平洋地区台风系统中发生的闪电大致有3个高发区,分别位于距台风中心20～40km的云墙区、280～340km与440～580km的外云带中。台风中心出现最大风速的时刻往往滞后于闪电频数峰值出现时刻,滞后时间一般在0～24h内,平均滞后时间为26.6h。因此,台风中闪电活动的频繁程度对24h内的台风强度发展具有一定的指示意义。Based on the lightning data by the World Wide Lightning Location Network（WWLLN） and the typhoon data from Typhoon Institute of Shanghai Meteorological Bureau, the paper presents the lightning activity characteristics and the relationship between the lightning frequency and the maximum winds of 55 typhoons occurring over the western Pacific during 2005 and 2010. The results show that o-ver the west Pacific, there are three distinct lightning flash regions in mature typhoons. One significant maximum in the eyewall regions about 20-40 km away from the center;the other two are located in outer rainbands （280-340 km and 440-580 km from the center）. Most typhoons have lightning activ-ity peaks before the maximum winds. The lag times ranges from 0 to 24 hours and the average lag times is 26.6 h. Therefore, the frequency of lightning activity is, to some degree, an indicator for the typhoon intensity development within 24 h.

关 键 词：WWLLN 台风 闪电频数 滞后时间 

分 类 号：P427.32[天文地球—大气科学及气象学] P444