高空急流轴倾斜以及急流出口区右侧强辐散场的出现要早于暴雨的发生。

The incline jet axis and strengthened convergence happen earlier than the rainfall does.

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不同边界层方案模拟的辐散场有一定的差别，导致了降水的不同预报效果。

With different boundary layer schemes, the simulated divergence fields differ, which affects the performance of the rainfall forecast.

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