【摘要】 通过对2003年7月8日发生在长江中游的一场大暴雨进行中尺度分析,初步研究了暴雨的形成及发展过程,总结了暴雨的产生与中小尺度系统的关系,着重阐述了低空急流在暴雨形成中的作用,以及在低空急流左侧强正涡度中心附近形成中尺度涡旋,激发暴雨云团等。更多还原

【Abstract】 By mesoanalysis of a precipitation that occurred in the middle reaches of the Changjiang River, 8th Jul. in 2003, the formation and development of the event, its relation with the meso-microscale system are studied, it is emphasized that the low-level jet would cause favorable thermodynamic, moisture and dynamic conditions for the heavy rainfall in the middle reaches of the Changjiang River and that the mesoscale vortex formed in the left of the low-level jet would stimulate strong convective clouds and cause the heavy rain.更多还原