可从图中风暴运动向量清楚看到与森姆相关的气旋式环流。
The cyclonic circulation associated with Sam is well depicted by the storm motion vectors. Fig.
结果该区域产生了垂直上升运动及负的涡度强迫源，对应着异常强烈的反气旋环流。
This generates ascent as well as negative vorticity source, which corresponds to a strongly anomaly anticyclone center appearing to the north of the heating region.
气旋性涡柱和上升运动及深厚湿舌的耦合是暴雪形成的一种重要动力机制。
The coupling of cyclonic vorticity column and ascending motion as well as deep moist tongue is one of the important dynamical mechanisms for the formation of the snowstorm.
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