Study shows that the process is caused by cold vortex in the east of Mongolia and subtropical high,and meso-scale convective cloud cluster is the direct reason of the local severe heavy rainfall.

• 发现本次过程是由蒙古东部的低涡与副热带高压共同作用发生的,而局地大暴雨的直接原因是中尺度对流云团所造成的。