招远雷暴特征分析

Analysis of the Characteristics of Thunderstorm in Zhaoyuan

利用1981～2010年招远地区地面气象观测资料，统计分析了招远地区雷暴年变化特征、季节变化特征和月分布特征。结果表明，30年来招远地区雷暴日数总体表现为缓慢减少的趋势，累计雷暴日638d，年平均雷暴日21．2d，年雷暴日最多37d，出现在1982年；一年中夏季雷暴最多，春季次之，冬季无雷暴；雷暴主要集中在4～10月，其中7月雷暴最多，占全年的28．8％。

Using the ground meteorological observation data in Zhaoyuan during 1981 -2010, the annual variation characteristics, seasonal variation characteristics and monthly distribution features of thunderstorm in Zhaoyuan were analyzed. The results showed that in recent 30 years, the number of thunderstorm days is slowly decreased, the cumulative thunderstorm days are 638, annual mean thunderstorm days are 21.2, the most annual thunderstorm days up to 37 days, appeared in 1982; thunderstorm mainly concentrates during Apr. to Oct. , especially in Jul. , accounting for 28.8%.