北京和东北地区雷暴与太阳活动的关系

太阳活动对于大气电性能可能会产生影响,而大气电性能在雷暴形成过程中可能会起着重要作用.因此,太阳活动对于大气电性能的影响,最终将有可能影响到雷暴的形成.本文用1957年到1978年北京地区和东北地区的10个气象站的13000多个雷暴资料,用时序迭加法分析了雷暴数与太阳磁扇形界面通过、太阳耀斑及太阳黑子11年周期变化等的关系.结果表明,有些年分的雷暴数当行星际磁场方向由指向太阳变为离开太阳的磁扇形界面扫过地球时有相关影响,在界面通过前后3天内或7天后雷暴数明显增大.从季节来看,上半年的界面通过比下半年的界面通过对雷暴的影响大.在各种太阳耀斑分类统计分析中,看到出现在日面上西区特别是西一区(0°-30°)的耀斑对雷暴的影响显著.雷暴数与太阳黑子11年周期变化则没有很显著的相关关系. 

Relationship Between Solar Activities and Thunderstorm Activities in Beijing Area and Northeast Region

Solar activities may influence atmospheric electric properties, Atmospheric electric properties may play a critical role in the formation of thunderstorm. The effects of solar activities on atmospheric electricity may at last .influence the formation of 'thunderstorm. The analysis of the relationship between IMF section boundary crossing, solar flare, sun spot eleven year cycle variation and thunderstorm index is given using superposition epoch merthod for more than 13000 thunderstorm data from 10 metero-logy stations in Beijing area and Northeast region during 1957 to 1978. The results show that for some year's there exists correlationship between thunderstorm index and positive IMF sectiofn boundary crossing. The thunderstom index increases obviously within three days near crossing and on the seventh day after the crossing. The influence of the crossing on thunderstorm is stronger in the former half year than the latter half year. For different classes of solar flares, the influenced are not equally obvious The solar flares appeared on the weat side, especially in westen region, one (from0° to 30°) have most obvious influence. There is no discernible correlationship between thunderstorm index and sun spot eleven year cycle.