The causations of heavy rain in this area are convergence in the low level and intensity of cyclonicvorticity 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。
2
The coupling of cyclonicvorticity 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。
3
The strongest cyclonic circulation and vorticity are at about 700 mb.