【摘要】 2007年3月3日,商丘市受高空低槽的影响,出现了历史上极为罕见的区域性暴雨,达到暴雨的县有3个,其他县均出现大到暴雨天气,此次暴雨是商丘市1961年以来3月份第一次区域性暴雨。通过高空形势和物理量特征等方面分析可知,高空低槽和低空急流是此次暴雨的主要影响系统,低空急流造成的暖湿空气辐合上升是产生此次暴雨的触发机制。更多还原

【Abstract】 By the impact of high-altitude low-trough,an extremely rare regional heavy rain fell in history on March 3,2007 in Shangqiu city.There are three counties were heavy rainfalls,and other counties were big-heavy rainfalls,and the rains are the first regional rainstorm on March after 1961 in Shangqiu city.From the analysis of the situation and physical characteristics of high-altitude areas,the high-altitude low-trough and low-level jet are the main impact system of the rain,the warm wet air convergence rising caused by low-level jet is the trigger mechanism of the rainstorm.更多还原