澳大利亚东南部持续性降水的成因

Analysis on Sustained Raifall Events in the Southeast of Australia

利用热带天气图、日本ＧＭＳ卫星云图、ＥＣＭＷＦ格点风场资料，对澳大利亚东南部持续性降水的两类主要天气过程：热带云涌－冷锋尾流气旋锋生过程和阻塞反气旋北侧回流降水过程进行了分析，从云型演变、环流形势、热带流场等方面揭示了澳大利亚东南部持续性降水天气过程的基本特征，为业务预报提供参考。

Using tropical weather charts,GMS satellite cloud pictures and ECMWF grid point wind data,two kinds of typical sustained raifall events in the southeast of Australia:cyclonic frontogenesis process caused by tropical cloud surge cold front wake interaction and return flow rainfall process in the north side of blocking anti cyclone,were analysed with different methods.The basic features of the two cases were given in terms of cloud patterns,circulation and tropical flow field.The results can be used as reference in the operational prediction.