【作者】 杨宗波； 康桂红； 邢建忠； 杨瑞峰；

【Author】 Yang Zongbo Kang Guihong XingJianZhong Yang RuiFeng (Shandong Province Taian Meteorological Office,Shangdong Province, 271000)

【机构】 山东省泰安市气象局；

【摘要】 在分析了泰安市夏季大暴雨产生前后高空环流形势和影响系统的基础上,归纳出形成大暴雨的环流形势和影响系统特征;通过对物理量的诊断分析,得出暴雨发生时相关物理量场分布特征以及中小尺度云团的演变特征,揭示泰安夏季大暴雨形成和发展的一些特点。在对物理量场进行诊断分析后发现,大暴雨发生时不同层次上的水汽通量、流场、垂直速度、涡度等物理量的变化有明显的特征,尤其是物理量的突变(24小时增量)对产生暴雨有较强的指示意义;得出中小尺度影响系统是造成暴雨的重要原因。更多还原

【Abstract】 Based on the analysis before and after summer rainstorm in Tai’an City, the characteristics of circumfluence and influence systems which causing the rainstorm have been concluded. At the same time, from the diagnosis of physics quantum, the distribution of relative physics quantum fields and the evolvement of small and medium-sized clouds during rainstorm have been obtained and consequently the form and development characteristic of rainstorm in Tai’an City has been discovered. While from the diagnosis of various physics quantum field, remarkable variety of hydrometeor circulation, flowing field, vertical velocity, and eddy status at different levels during the rainstorm have been found, therefore, it become to be known that the sudden change of physics quantum (increment of 24 hours) make great sense in indicating the form of rainstorm, and the small and medium-sized influence systems are important factors for the cause of rainstorm.更多还原