The MM5 model has enough ability to simulate the precipitation area,precipitation intensity as well as inner structure of vortex,and the positive potential vorticity area move toward east as the vortex move toward east.
MM5模式能较好地模拟出低涡的降水落区、强度以及内部结构,正位涡区随着低涡的东移而东移。
参考来源 - 一次高原低涡过程的数值模拟与结构特征分析·2,447,543篇论文数据，部分数据来源于NoteExpress
湿位涡对西南涡的斜压性加大有重要的贡献。
Wet potential vorticity had a great contribution to the stronger baroclinicity of the southwest vortex.
当近地面出现负的位涡扰动时，降水随之也减弱。
When near ground arises negative potential vorticity disturbance, precipitation also weaken.
暴雨与湿位涡呈反位相相关，且在暴雨较强时相关性更好。
Rainstorm phase is the inverse of humidity potential vorticity, especially in severe rainstorm.
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