太平洋副热带高压大而强，位置偏南，脊点偏西。南半球冷空气活动比常年少而弱。
The Pacific subtropical anticyclone appears strong and large, its position leans toward south, and its ridge extends to west.
这样，来自北半球和南半球的冷空气就会不断地涌入赤道附近，补充由于热空气上升造成的真空。
But from both the northern and southern hemispheres, cold air is constantly pouring towards the equator in order to fill the vacuum thus produced.
通过改变设在赤道的南边界条件，设计系列数值试验反映南半球不同强度冷空气的入侵。
A number of numerical experiments were designed by changing lateral boundary conditions to denote different intensity of cold surges from southern hemisphere.
南半球澳洲附近、南太平洋、南印度洋的热带气旋数的变化与北半球亚洲大陆的冷空气活动有密切的联系。
On the other hand the change of frequences of tropical cyclone on the southern hemisphere is associated with the strength of the cold air in northern hemisphere.
一种可能的机制是由于从南半球侵入西北太平洋的冷空气随着南半球气候的变暖而减弱。
The possible mechanism of the phenomenon is that the cold air from the Southern Hemisphere weakens with the climatic warming in Southern Hemisphere.
一种可能的机制是由于从南半球侵入西北太平洋的冷空气随着南半球气候的变暖而减弱。
The possible mechanism of the phenomenon is that the cold air from the Southern Hemisphere weakens with the climatic warming in Southern Hemisphere.
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