一次影响飞行的沙尘暴天气分析

A Case Analysis on Sand-dust Storm Weather Which Affecting Flight

从气候背景、天气形势、地形特点、沙尘暴形成的热力和动力机制等方面,对2007年3月30日发生在乌海机场沙尘暴天气进行分析。结果表明:蒙古气旋的前部有较强的辐合上升运动,卷起了沙尘,而高空急流带来了强大动力条件,使沙尘在前进中不断发展加强,所以蒙古气旋的发生、发展,以及高空急流的形成对沙尘暴的预报有一定的指示意义。

A case study was made of the sandstorm occurred on March 30,2007 in the Wuhai airport from the aspects of the climatic background,geography characteristic weather situation,dynamical and thermodynamic mechanisms of effecting the sandstorm.The results indicated that the strong convergence and upward motion in the front of the Mongolia cyclone drew dusts up;the high-level jet stream that brought strong dynamic condition made the development of sand-dusts stronger.The occurrence and development of the Mongolian cyclone and the formation of the high-level jet stream was useful for the prediction of dust storms.