Sountherly lower level jet of exit region on the south side of upper level jet enhances the inflow intensity of storm which provide the plenty of vapor for the convective systems.
高空急流出口区南侧的偏南风低空急流加强了风暴的入流强度，为风暴提供了有利的风场环境和水汽条件。
The evolution and enhancement of occluded frontal circulation in upper-level westerly jet and lower-level southerly jet are discussed by using a dry primitive equation model.
利用原始方程模式探讨了高空西风急流和低空南风急流中锢囚锋环流的演变和增强机制。
A seldom snow process in Turpan in February 2000 is analysised. It is shown that the snow have been brought by strong ascending motion of lower troposphere and abrupt enhancement of low- level jet.
对“2000·2”罕见降雪天气过程分析表明，低层强烈的辐合上升运动和低空急流的突然增强是产生降雪的关键。
A seldom snow process in Turpan in February 2000 is analysised. It is shown that the snow have been brought by strong ascending motion of lower troposphere and abrupt enhancement of low- level jet.
对“2000·2”罕见降雪天气过程分析表明，低层强烈的辐合上升运动和低空急流的突然增强是产生降雪的关键。
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