The causations of heavy rain in this area are convergence in the low level and intensity of cyclonic vorticity and strong upward motion.
低层辐合和气旋性涡度的加强所产生的强上升运动造成较大的降水过程。
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.
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 strongest cyclonic circulation and vorticity are at about 700 mb.
气旋性环流和气旋性涡度在对流层中层的700毫巴附近最强。
The interaction among the shearing basic flow, cyclonic vortex, and multiple vorticity lumps can change the tendency.
切变基流、低涡和多个涡块的相互作用，可以改变下降的趋势。
The interaction among the shearing basic flow, cyclonic vortex, and multiple vorticity lumps can change the tendency.
切变基流、低涡和多个涡块的相互作用，可以改变下降的趋势。
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