阜新市雷暴发生规律及对农业造成的灾害

The Regularity of Thunderstorm and the Disaster to Agriculture in Fuxin City

利用阜新市53年雷暴等资料,通过Morlet小波分析、MK突变检验、重标极差R/S等方法对雷暴活动特征进行分析,结果表明:阜新市53年雷暴日数均呈减少趋势,趋势变化的转折时间出现在2006年;雷暴夏季最多,春季次之;雷暴的天气类型为:副高西北部、高空冷涡、高空冷槽、西北气流和局地热对流;雷暴初日4月最多,6月最少;雷暴的主周期为21~24年;雷电天气往往同时伴有短时大风、冰雹、短时强降水等强对流天气,对农业生产造成严重的危害。

Based on the statistical data of thunderstorm in 53 years in Fuxin City, the characteristics of thunderstorm activity were analyzed by Morlet wavelet analysis, MK Mutation test and rescaled range r/s. The results show that the number of days of 53 A thunderstorm in Fuxin is decreasing, the turning time of the trend change appeared in 2006, the most thunderstorms occurred in summer, followed by spring, the weather types of thunderstorms were: the northwest part of the subtropical high, the upper cold vortex, the upper cold trough, the northwest air current and the local geothermal convection, the most thunderstorms occurred in April and the least in June at the beginning of thunderstorms;The main period of thunderstorm is 21 ~ 24 years, and the thunderstorm weather is often accompanied with strong convective weather such as short-term strong wind, hail, short-term strong precipitation, which causes serious damage to agricultural production.