It is pointed out that the rainstorm center is under the wind shear, above which convergencecenter and the maximum positive vorticity exist.
指出暴雨中心位于风速切变的下方，同时上空也伴随辐合中心，以及正涡度极大值。
2
The rain storm activities relate to the mesosynoptic systems such as the mesoscale shear line, the mesoscale convergence line and the mesoscale convergencecenter.
雨团活动与中尺度切交线、辐合中心、辐合线等中尺度天气系统相配合。
3
In addition, a thought of how to use the mesoscale convergencecenter, TBB of convective cloud and the radar echo for rainfall rate to predict the mesoscale rain cluster is presented.