基于闪电监测定位仪资料的江门地区闪电特征分析  

A STUDY ON LIGHTNING CHARACTERISTICS OF JIANGMEN REGION BASED ON LIGHTNING DETECTION AND LOCATION SYSTEM

作　　者：林卓宏[1,2] 梁敏妍[2] 于东海[1] 梁军[1] 林国生[1] 黄嘉佑[3] 

机构地区：[1]江门市新会区气象局,广东江门529100 [2]江门市气象局,广东江门529030 [3]北京大学物理学院大气与海洋科学系,北京100871

出　　处：《热带气象学报》2013年第3期524-528,共5页Journal of Tropical Meteorology

基　　金：广东省江门市气象局课题资金(2011001)资助

摘　　要：基于闪电监测定位仪数据资料,对广东省江门市2008—2011年的逐日闪电数据进行相关、因子和序列突变等统计分析研究。得到结论:闪电物理量中的总闪数序列能够较好地代表闪电频数物理量;总闪数和日雷电小时的候际、月际变化序列能较好地反映雷暴数和降水量的候际、月际变化的主要特征,反映对流活动的情况;利用总闪数的候突变,可以作为华南夏季风爆发时间的预测指标之一;日雷电小时的突然增加,可以作为江门地区汛期开始时间的预测指标之一。The data of daily lightning in Jiangmen city during 2008--2011 based on a lightning detection and location system are used to analyze relevant statistics, factors and the abrupt change of sequences. The results of the study are shown as follows. The total lightning number best represents the physical quantity of lightning frequency. The total lightning number best represents the lightning frequency and the pentad and monthly variations of the total lightning number and daily lightning hours represent the characteristics of these variations as well as convective activity. We can diagnose the onset time of the South China summer monsoon through analyzing the abrupt change of total lightning number in pentad sequences, and predict the starting time of flood seasons in Jiangmen region through the sudden increase of daily lightning hours.

关 键 词：应用气象 闪电气候特征 总闪数 日雷电小时 突变分析 

分 类 号：P427.3[天文地球—大气科学及气象学]