摘要
通过统计分析海南省澄迈县1959-2004年逐日雷暴资料,找出雷暴发生时空分布特征,统计1995-2004年10a雷暴发生的影响天气系统,计算出各天气系统影响下雷暴发生的概率。分析结果表明：澄迈县雷暴日46a平均雷暴频次437次,年际变化呈波动减少趋势,5-8月是雷暴发生的高发期,占全年雷暴的53%,16-17时是一天中发生雷暴的最高期,西南方向发生的雷暴略多于其他方向,澄迈县受西南低压槽、南海低压槽和副热带高压等天气系统影响时发生雷暴的概率较大。
Using the data of the thunderstorm days of Chengmai county stations in Hainan province from 1959 to 2004, the basic climatic characteristics of thunderstorm are analyzed. The main results are as follows ： the annual averaged times of thunderstorm in Chengmai county are 437. The general trend of the annual mean thunderstorm have been reducing in the last 46 years. Thunderstorm mainly occurs at 4-5pm in a day from May to August. The southwest trough, South China Sea trough, subtropical high are very important systems influencing the thunderstorm.
出处
《气象研究与应用》
2007年第3期50-52,46,共4页
Journal of Meteorological Research and Application
关键词
雷暴
气候特征
防御
thunderstorm climatic characteristic
distributions
prevention
