朝阳地区一次大暴雪过程分析

从大尺度环流背景、云图、数值预报着手,对2007年3月4日朝阳全区大暴雪天气过程进行分析,探讨此类灾害性天气过程的天气成因及发生、发展机理。结果表明,此次大暴雪的产生是在稳定的天气尺度环流背景下,高空槽与地面倒槽相互作用的结果。西南—华北东北部—东北地区南部有低空急流,是形成大暴雪天气的主要条件之一,为这次暴雪提供了充足的水汽供应。日本降水预报产品准确率较高,对朝阳地区强降雪天气的预报有一定的指导意义。

Analysis on A Big Blizzard Process in Chaoyang Region

A big blizzard process in Chaoyang on Mar.4th,2007 was analyzed from large scale circulation background,satellite image,numerical forecast,the cause,occurrence and development mechanism were discussed.The results showed that the blizzard is the interaction result of high-level trough and ground inverted trough under stable weather scale circulation background.The low-level current in southwest-northeast part of north China-south part of northeast is one of the main causes,which provide sufficient water vapo...