贵州夏季一次暴雨过程的中尺度特征分析
Analysis of Mesoscale Characteristics of a Summer Rainstorm Case in Guizhou

利用常规观测资料、区域自动站降水资料及Fy2G卫星云图等资料，对2019年7月6日贵州南部的一次暴雨过程的成因进行诊断分析，结果表明：此次暴雨过程主要是由于东北低涡发展东移、副热带高压维持(以下简称副高)、高原槽东移、中低层切变线、地面辐合线共同影响，低空急流的建立，为贵州南部提供充足的水汽和动力条件，地面中尺度辐合线触发了此次对流系统的发展，在贵州西南部形成中尺度对流复合体(MCC)并不断东移影响南部。
Using conventional observation data, precipitation data of regional automatic stations and Fy2G satellite data, the causes of a rainstorm process in Southern Guizhou, on July 6, 2019 were analyzed. The results show that the rainstorm process is mainly due to the joint influence of the development of the Northeast Vortex moving eastward, the maintenance of the subtropical high, the eastward movement of the plateau trough, the middle and low-level shear line and the ground convergence line, and the establishment of the low-level jet, providing sufficient water vapor and dynamic conditions for the Southern of Guizhou. The mesoscale convergence line in the surface triggered the development of the convective system, a mesoscale convective complex (MCC) in the southwest of Guizhou was formed on southwest Guizhou and moving eastward to affect the south.