内蒙古赤峰地区沙尘暴的天气学特征

Synoptic characters of dust storm process occurring in Chifeng Administrative Region in Inner Mongolia

分析了1960-2003年内蒙古赤峰地区69次沙尘暴天气过程的环流形势,重点讨论了高低层系统的相互配置;根据沙尘暴的观测资料,以造成内蒙古赤峰地区沙尘暴的主要地面环流系统为依据,通过综合分析归纳,将形成沙尘暴的环流系统划分为蒙古气旋、高压前偏北大风、冷锋过境、东低西高和南高北低型等5种环流形势,供本地沙尘暴天气过程的预报参考。

69 cases of dust storm processes occurring in Chifeng Region of Inner Mongolia during 1960 to 2003 were analyzed and this paper focus attention on the mutual collocation between higher layer system and lower one. Based on the observed data from dust storm weather processes, and according to analyzing the surface circulation system which bring on those dust storms in Chifeng Region, five circulation styles are expounded, The circulation styles inelude Mongolia cyclone, north wind before anti-cyclone, passing cold-front, anticyclone in south part when cyclone in north, and anticyclone in west part when cyclone in east, respectively. The result gives a reference to foresting the local dust storm weather processes.