埃尔尼诺与反埃尔尼诺期间亚洲夏季风环流系统的特征差异

The Different Characteristics of the Summer Monsoon Circulation Systems over Asia in the EI Ni(?)o and Anti-EI Ni(?)o Years

本文对最近三次埃尔尼诺及三次反埃尔尼诺年7月份850hPa风的资料分别进行了合成分析。结果发现,在这两类不同的海洋事件中,亚洲夏季风主要环流系统(低空越赤道气流、盛行风、西太平洋副高及澳大利亚高压等)均表现出不同的特征,其中北半球环流系统特征与以前的研究结果一致,但澳大利亚高压则不然。

In this paper, the resultant analysis is made respectively of the wind data at 850 hPa in July of the last three El Nifio and three Anti-El Nino years. The results show that the major summer monsoon circulation systems over Asia (the low-level cross-equatorial flows, the prevailing wind, the sub-tropical high over the Western Pacific and the Australia high) are indicative of different characteristics in the two kinds of marine events. The characteristic of the atmospheric circulation systems in the northern hemisphere coincides with the results of the early researches, but the Australia high does not.