摘要
文章利用呼伦贝尔市1960—2012年逐日雷暴资料,对雷暴的时空分布特征进行总结分析。结果表明:呼伦贝尔市雷暴每年集中发生在4—10月份,6月份最多;雷暴的日分布主要集中在13—19时,占总数59.8%,14—17时为峰值,占主要集中时段(13—19时)的65%。年际变化不大。空间分布是大兴安岭东部雷暴日多于西部地区。EOF分解的第一特征向量表明呼伦贝尔市雷暴日的变化呈现一致性,从1988年雷暴日呈减少趋势,第二特征向量表明以大兴安岭为界,东西呈现相反的变化趋势。
The article using the daily thunderstorm data of Hulun Buir city from 1960 to 2012 , , space-time distribution characteristics of thunderstorm was analysised.. The results show that the Hulun Buir city thunderstorms occurred from April to October, most of June; Thunderstorm day distribution mainly concentrates in the time period from 13:00 to 19:00, accounted for 59.8% ,of the total number of 14:00 to 17:00 as a peak, for concentrated period of time (13:00 to 19:00) 65%; 03:00-11:00 fewer thunderstorms occur, accounted for 13.2%. Interannual variability. Spatial distribution is a severe thunderstorm in the east than in the western region.
出处
《内蒙古气象》
2017年第2期31-34,共4页
Meteorology Journal of Inner Mongolia
关键词
呼伦贝尔
雷暴
时空分布
总结分析
Hulun Buir city
thunderstorm
space-time distribution
Summary analysis