There was a good consistency between the location of the center of heavy rainfall and lower-level convergence, upper-level divergence and vertical ascent motion.
强降雨中心出现的位置跟低层辐合高层辐散出现的位置和最大垂直速度上升区有很好的一致性；
Severe convergence brought by Low-level jet pulsation, and severe divergence brought by upper-level jet is directly trigger mechanism of this intense rainstorm.
低层低空急流脉动产生的强辐合，高空急流诱发的高层强辐散是本次东北地区暴雨天气的直接触发机制。
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