绥化市一次特大暴雪成因分析

Analysis of the cause of a heavy snowstorm in Suihua city

本文利用Micaps3.0资料,对2013年11月17-20日绥化市出现的一次大范围暴雪天气过程的环流特征和物理量场进行分析,结果表明,这次暴雪过程是由高空低涡的发展引起的,地面切变线是主要的影响系统,中低层较强的水汽辐合为暴雪提供充足水汽。暴雪产生于地面低压东风倒暖平流里。

The circulation characteristics and physical quantities of a large scale blizzard weather process occurred in Suihua from 17 to 20, November 2013 was analyzed with the Micaps 3 data. The results show that, high vortex’s development cause this snowstorm, the surface shear line is the main influence system, strong water vapor convergence in low level provide adequate moisture for the blizzard. Blizzard generate in the east wind reverse warm advection of ground low pressure.