摘要
利用大理州12个站1961~2004年的逐日气象观测资料,对雷暴的时间、空间分布特点和变化特征进行了分析。结果表明:大理州一年四季均有雷暴出现,即使在最冷的12月和1月。雷暴的出现主要集中在雨季(5月~10月),特别是6月~9月;大理州的雷暴具有空间分布不均匀的特征,但全州均属多雷暴区;20世纪60年代、70年代为多雷暴期,进入80年代后,雷暴日逐渐减少。
The spatial and temporal distribution and variation features of thunderstorm in Dali of Yunnan Province are analyzed based on daily weather datum of 12 observatories of Dali from 1961 to 2004. Results indicated that the thunderstorms occurred in the four seasons especially in June to September. The thunderstorm days were relative more from 1960 to 1970 and they showed decreasing trend since 1980.
出处
《云南地理环境研究》
2007年第3期18-20,共3页
Yunnan Geographic Environment Research
关键词
雷暴
时空分布
气候特征
thunderstorm day
distributive characteristic
climatic feature