The calculation of vorticity budgets indicates that both horizontal advection term and horizontal divergence term contributed most importantly to the strengthening of vortex.
对东北低涡涡度收支的计算可以发现,水平涡度平流项和水平辐散项对低涡的发展加强有最主要最直接的贡献。
参考来源 - 东北暴雨天气气候特征及东北低涡结构研究·2,447,543篇论文数据，部分数据来源于NoteExpress
It arises because of the horizontal divergence.
它是由于水平辐散而出现的。
The divergent lens only enlarges the Angle of horizontal divergence and not the Angle of vertical divergence.
发散透镜只增加水平发散角而不增加垂直发散角。
Positive vorticity accumulated by horizontal advection was balanced with negative vorticity made by divergence term in vorticity balance.
涡度平衡中主要是水平平流累积的正涡度与散度项制造的负涡度相平衡。
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