中文摘要：

在这份报纸，在东亚的 Meiyu 摘要气候学被讨论。Meiyu 的雨乐队的地点从气候学的观点是稳定的，这被建议，尽管活跃(湿) 并且裂缝(干燥) Meiyu 被摘要的系统影响。持续时间和发作和撤退 Meiyu 展览标明日期巨大的 interannual 可变性，并且这样，他们在季节的气候预言是几乎无法预言的。Meiyu 被用作一个摘要的概念并且在东方亚洲国家由气象学的机构适用于运作的预报许多十年。作为结果，发作的预言和 Meiyu 的撤退日期为气象学的服务成为了一个重要运作的工作。这也误导公众和科学家注意。向北方巨浪与 intraseasonal 摆动联系了的东方亚洲夏天季风(EASM ) 的繁殖是仔细与有关活跃并且裂缝 Meiyu。EASM 巨浪的活动和繁殖调制 active/break Meiyu 引起集中性的严重降水过程和洪水或干旱；因此，作者建议改变 Meiyu 的当前的预报方法论。它是更有意义的从象申请观点一样科学在一年里进入 climatological Meiyu 时期建立监视并且 EASM 巨浪预报在季节的进步以后代替 Meiyu 的当前的运作的预报。

英文摘要：

In this paper,the synoptic-climatology of Meiyn in East Asia is discussed.It is proposed that the location of the rain band of Meiyu is stable from the viewpoint of climatology,even though the active （wet） and break （dry） Meiyu are influenced by synoptic systems.The duration and the onset and retreat dates of Meiyu exhibit tremendous interannual variabilities,and thus,they are almost unpredictable in seasonal climate prediction.The Meiyu has been used as a synoptic concept and applied to the operational forecast for many decades by meteorological agencies in East Asian countries.As a result,the prediction of the onset and retreat dates of Meiyu has become an important operational work for meteorological services.This has also misled the public＇s and scientists＇ attention.The northward propagation of the East Asian summer monsoon （EASM） surge associated with the intraseasonal oscillation is closely related to the active and break Meiyu.The activities and propagation of the EASM surge modulate the active/break Meiyu that cause concentrative severe precipitation processes and floods or droughts; hence,the authors suggest changing the current forecasting methodology of Meiyu.It is more meaningful from the scientific as well as application viewpoints to establish the monitoring and forecasting of the EASM surge to replace the current operational forecast of Meiyu after the seasonal progress enters the climatological Meiyu period in a year.