There are mesoscale low level convergence and high level divergence in the thunderstorm area.
同时又存在明显的低层辐合高层辐散的中尺度流场。
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。
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。
There is convergence at low-level and high-level, respectively, with divergence in between.
低层和高层有弱的辐合，中层是辐散；
The cold and warm currents meet at the southern side of the shear line and the left side of the low-level jet stream to produce an upward movement of intensive convergence and trigger the rainstorm.
冷暖气流在切变线南侧、低空急流左侧交汇，产生强烈辐合上升运动，触发了强降水。
Low level flush water vapor condition, strong frontal zone and vapor convergence are the main course of the rainstorm.
低层充沛的水汽条件、较强的锋区和水汽辐合是此类暴雨产生的主要原因。
Low level flush water vapor condition, strong frontal zone and vapor convergence are the main course of the rainstorm.
低层充沛的水汽条件、较强的锋区和水汽辐合是此类暴雨产生的主要原因。
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