利用与非静力平衡中尺度气象模式完全耦合的区域沙尘数值模式，模拟研究这次强沙尘天气过程中沙尘浓度的空间分布结构和时间演变趋势。
The spatial and temporal distribution and development of dust concentration and structure were simulated by a coupled dust model with non-hydrostatic mesoscale model.
作者从干旱气候背景、环流状况、沙尘源、沙尘路径及天气系统等方面进行了分析，并集中对引发强沙尘暴的蒙古气旋进行了诊断分析。
This study was conducted in the aspects, such as, dry climatic background, circulation conditions, possible sand-dust sources, paths of sand transportation, and synoptic systems.
中国每年遭受的强沙尘暴天气由50年代的5次增加到了90年代的23次。
Every year China suffered strong sandstorm weather increased from 50 s five times in the 90 s of the 23 times.
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