开封市近60年雷暴气候的统计分析

利用开封市1951—2010年60年的雷暴观测资料,用数理统计、线性分析等方法分析了开封雷暴的气候特征.结果表明,60年来开封年平均雷暴日数较多,属中雷区;年雷暴日数有减少的变化趋势.一年12个月都有可能出现雷暴,但多集中出现在4—9月,以7月出现最多,12月和1月极少出现.

Statistical Analysis of Nearly 60 Years of Thunderstorm Climate in Kaifeng

Using the thunderstorm observed date and and according to the methods of mathematical statistis and linear analysis,we made an assay of the climate characteristics of thunderstorm in the last 60 years,namely from 1951 to 2010.It shows that Kaifeng belongs to the mined area which has a higher average thunderstorm,while it trends to decreasing about the days that occurr thunderstorm.Although it is possible to appear thunderstorms in each month of one year,according to the statisticals,it is most likely to happen during April to September,especially in July.Moreover,it seldom take place in December and January.