中文摘要：

先进研究 WRF (天气研究并且预报) 模型被用来模仿 mesoscale 的进化在 Meiyu 前面上形成了并且持续了超过二天的对流旋涡(MCV ) 。模拟被用来为 MCV 的开始，增强，和垂直扩大调查内在的原因。这 MCV 具有经常在 mesoscale 的层状的区域开发对流系统的中间水平的 MCV 的一种类型。加强并且到达它的最大的紧张和垂直程度的旋涡(从表面到上面的层次) 当第二等的组织传送对流在中间水平的发行量以内发展了时。控制 MCV 的运动、热的结构的进化的因素通过涡度，温度，和精力的预算的分析被检验。变丑的本地 Rossby 半径的进化揭示 MCV 和它的父母 mesoscale 的互连的性质对流系统。

英文摘要：

The Advanced Research WRF（Weather Research and Forecasting） model is used to simulate the evolution of a mesoscale convective vortex（MCV） that formed on the Meiyu front and lasted for more than two days. The simulation is used to investigate the underlying reasons for the genesis, intensification, and vertical expansion of the MCV. This MCV is of a type of mid-level MCV that often develops in the stratiform regions of mesoscale convective systems. The vortex strengthened and reached its maximum intensity and vertical extent（from the surface to upper levels） when secondary organized convection developed within the mid-level circulation. The factors controling the evolution of the kinetic and thermal structure of the MCV are examined through an analysis of the budgets of vorticity, temperature, and energy. The evolution of the local Rossby radius of deformation reveals the interrelated nature of the MCV and its parent mesoscale convective system.