摘要
利用2000～2003年闪电定位资料，对广州地区雷电时空变化的分析表明，广州地区的雷电主要发生在4～10月，电闪有准双峰的日变化，其中13：00～21：00雷电发生最频繁。广州市区是雷电的高发区，其次是其东北部山区。正电闪的空间分布中心偏于市区的南侧。对相关环流形势和影响系统进行统计，结果表明导致频闪的天气类型主要有西风槽类、副热带高压类和热带系统类等3类6型，在不同的季节频闪天气型的系统配置有所不同。
Based on the lightning data from 2000 to 2003, the temporal and spatial characteristics of lightning in Guangzhou are analyzed. It is shown that lightning occurs frequently from April to October with quasi-bimodal daily variation, most frequently from afternoon to midnight. Lightning occurs the most frequently in the urban area, secondly in the northeast part of the city. The positive lightning center is located to the south of the urban area. The related circulation patterns and synoptic systems are also studied. The synoptic patterns of severe lightning can be divided into three categories and six types, which are affected by the westerly trough, under the control of the subtropical high or related to tropical systems, respectively. The disposition of each type varies in different seasons.
出处
《气象科技》
2006年第6期679-683,共5页
Meteorological Science and Technology
基金
广州市科技攻关项目"广州市雷电灾害监测与预警技术"(2004Z3-E0011)资助
关键词
广州雷电
时空特点
天气学分型
Guangzhou, lightning, temporal-spatial characteristics, synoptic pattern
