中文摘要：

在冬季海表面温度(SST ) 之间的关系在长江山谷和可能相关的物理机制的澳大利亚和夏天降水的东方用观察数据被调查。澳大利亚的冬季 SST 东方在长江山谷断然被相关到夏天降水，这被发现。当澳大利亚的 SST 东方在冬季变得更温暖时，西方的和平的副热带的高度和东方亚洲西的喷气趋于变向南方下列夏天，有在东方中国上的低级西南的异例的同时发生的事件。这些条件在长江山谷赞成降水增加，而相反的条件赞成降水减少。在东方亚洲夏天的澳大利亚的冬季 SST 东方的影响大气的发行量可以以二个方法发生。首先，由在冬季的澳大利亚的异常 SST 信号东方，那整个下列夏天坚持，因此经由内部半球的 teleconnection 影响东方亚洲大气的发行量。第二，当澳大利亚的 SST 东方在冬季是更温暖的时，更高的 SST 在西南印度洋同时出现并且随后发展由本地由空至海的相互作用东方。作为结果，在海上的大陆的 SST 在夏天增加，它可以在东方亚洲夏天导致一个异常变化通过它传送对流上的影响的大气的发行量。

英文摘要：

The relationship between winter sea surface temperature （SST） east of Australia and summer precipitation in the Yangtze River valley and a possibly related physical mechanism were investigated using observation data. It is found that winter SST east of Australia is correlated positively to summer precipitation in the Yangtze River valley. When the SST east of Australia becomes wanner in winter, the western Pacific subtropical high and the East Asian westerly jet tend to shift southward the following sum- mer, concurrent with low-level southwesterly anomalies over eastern China. These conditions favor precipitation increase in the Yangtze River valley, whereas the opposite conditions favor precipitation decrease. The influence of winter SST east of Australia on East Asian summer atmospheric circulations may occur in two ways. First, by an anomalous SST signal east of Australia in winter that persists through the following summer, thus affecting East Asian atmospheric circulations via the inter-hemispheric teleconnection. Second, when the SST east of Australia is wanner in winter, higher SST appears simultaneously in the southwest Indian Ocean and subsequently develops eastward by local air-sea interaction. As a result, the SST in the Maritime Continent increases in summer, which may lead to an anomalous change in East Asian summer atmospheric circulations through its impact on convection.