中文摘要：

mesoscale 的进化在 2122 2008 年 6 月期间在 Dabie 山的北区域引起了强壮的降水的对流系统(MCS ) 被分析，与联系中央的进化一起 -- 放大对流旋涡(MCV ) 。本地分析和预言系统(臀部) 在水平分辨率和 1-h 时间分辨率在华南重降雨期间试验的 3-km (SCHeREX ) 产生的 mesoscale 分析数据被利用。结果证明二个过程在对流不稳定性的改进起了关键作用。首先，低级喷气加强了并且变的 mesoscale 东方，导致温暖湿的气流的集中并且在中间和底层增加对流不稳定性。第二，温暖湿的气流从北方与冷气流交往了，引起在陡峭地泼出潮湿的 isentropic 表面的附近的增加的垂直涡度。这二个过程的联合行动引起了 MCS 变日益增多地东方。与 MCS 联系的冷凝作用释放了潜伏的热并且形成了在中间的对流层加热的大 diabatic 的层，增加在这层下面的潜在的涡度。潜在的涡度的这增加为低级旋涡发行量的发展创造了有利条件。进一步与这个低级旋涡联系的垂直运动支持了传送对流的发展，创造在深传送对流和低级旋涡发行量之间的积极反馈。这反馈机制不仅支持了 MCS 的成熟，而且在 MCV 的进化起了主要作用。由于伴随了旋涡的中心和传送对流的中心一起来的积极反馈的改进形成并且发展的 MCV。积极反馈达到顶点，当这二个中心收敛了时， MCV 成熟。积极反馈变弱， MCV 开始了到二个中心分开了并且分叉的腐烂。

英文摘要：

The evolution of a mesoscale convective system （MCS） that caused strong precipitation in the northern area of Dabie Mountain during 21 22 June 2008 is analyzed, along with the evolution of the associated meso-β-scale convective vortex （MCV）. The mesoscale reanalysis data generated by the Local Analysis and Prediction System （LAPS） at a 3-km horizontal resolution and a 1-h time resolution during the South China Heavy Rainfall Experiment （SCHeREX） were utilized. The results show that two processes played key roles in the enhancement of convective instability. First, the mesoscale low-level jet strengthened and shifted eastward, leading to the convergence of warm-wet airflow and increasing convective instability at middle and low levels. Second, the warm-wet airflow interacted with the cold airflow from the north, causing increased vertical vorticity in the vicinity of steeply sloping moist isentropic surfaces. The combined action of these two processes caused the MCS to shift progressively eastward. Condensation associated with the MCS released latent heat and formed a layer of large diabatic heating in the middle troposphere, increasing the potential vorticity below this layer. This increase in potential vorticity created favorable conditions for the development of a low-level vortex circulation. The vertical motion associated with this low-level vortex further promoted the development of convection, creating a positive feedback between the deep convection and the low-level vortex circulation. This feedback mechanism not only promoted the maturation of the MCS, but also played the primary role in the evolution of the MCV. The MCV formed and developed due to the enhancement of the positive feedback that accompanied the coming together of the center of the vortex and the center of the convection. The positive feedback peaked and the MCV matured when these two centers converged. The positive feedback weakened and the MCV began to decay as the two centers separated and diverged.