【摘要】 利用1986～2000年成都地区的雷暴资料,分析得到:成都地区的多年平均雷暴日数在24～30之间,属雷暴较多的地区之一。季节性显著,冬季无雷暴,盛夏雷暴日数占全年雷暴日数的2/3左右。地域性强,大城市的热岛效应对雷暴的发生有促进作用。雷暴天气过程的分析为作好雷暴发生时空域预报提供了好的思路。更多还原

【Abstract】 Using the observational thunderstorm data between 1986 and 20000 the spatial and temporal distribution of the thunderstorms in Chengdu area are analyzed. The results show that the annual average number of thunderstorm days is between 24 and 30 in Chengdu area which is among those with more thunderstorms. About 2/3 thunderstorms occur in summer and none in winter. Urban heat island effect plays a positive role in triggering the thunderstorms. Practically the analysis of the thunderstorms weather provides a forecast idea when and where thunderstorms take place.更多还原