中文摘要：

江淮切变线是中国东部特有的天气系统,与梅雨期降水密切相关,为江淮流域地区夏季降水最主要的天气系统。为了提高夏季中国东部降水的预报能力,深化对江淮切变线认识和研究,本文较为系统地回顾了江淮切变线的相关研究,包括江淮切变线的定义、分类、结构、形成发展机制、影响作用、与其他天气系统相互作用以及研究技术手段等方面,并梳理其研究成果,从经典定义和预报业务实际出发,指出江淮切变线结构的多样性和多尺度特性。同时,在回顾研究成果的基础上,展望了在多源大气探测资料不断出现的当今,江淮切变线值得进一步深入研究。

英文摘要：

The Yangtze-Huaihe shear line is a specific weather system in the East China,which is closely related to the heavy rain during the Meiyu period. Therefore,a comprehensive understanding of the Yangtze-Huaihe shear line is significant to improve the ability of weather forecast in East China. This paper reviews the recent advances on the researches of the Yangtze-Huaihe shear line related to the definition,classification,structure,mechanism of formation and development,the impacts and the interaction with other weather systems. The shear lines,including warm shear line,cold shear line,quasi-static shear line and vortex shear line have differences as for the weather systems distribution of different levels. The position and intensity of other systems have strong impact on the formation and development of shear line and shear line torrential rain. The diversity of the structure and the multi-scale property about the Yangtze-Huaihe shear line are released focusing on the classical definition and the operational needs. Moreover,the further investigation aspects,such as 3-dimensional dynamical structure,thermal structure and other multiformity feature,associated with the Yangtze-Huaihe shear line are given under the background of the increasing observational dataset.