2010年11月新丰秋季暴雨成因分析

Analysis of the heaviest rainfall in the autumn of Xinfeng Country at Nov.2010 of Urban

通过对2010年11月12日发生在新丰的秋季暴雨的环流特征和影响系统、水汽输送特征、涡度、散度、垂直速度等物理量的分析，发现此次暴雨过程实际生命史较长，降水强度和对流特征也不如夏季明显，为切变线冷锋暴雨；高低空急流较强，有利的热力水汽条件和动力条件是暴雨产生和维持的机制。

After analyzed the circulation characteristics , water vapor transfer characteristics, vorticity, divergence, vertical velocity and other physical quantity of the heaviest rainfall in the autumn of Xinfeng country on 12 Nov.2010, we found that this heaviest rainfall process lasted longer, the precipitation intensity and the convection characteristics were weaker than rainstorm in summer, and it is a cold front rainstorm. The heaviest rainfall was emerged and sustain by the strong jet of high and low, the advantaged water vapor transfer and atmospheric motion.