The increased wave energy in the air spreads both horizontally, around the Northern Hemisphere, and vertically, up into the stratosphere and down toward the earth's surface.

空气中增加的波能沿北半球水平传播，垂直上升到同温层然后下降到地球表面。

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In stratosphere, while the strong easterly wind appears in the low latitudes over the Northern Hemisphere, it disappears in low latitudes over the Southern Hemisphere;

南半球平流层低纬度强东风的消失和北半球低纬度强东风的建立是同时发生的。

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The second one, which begins in the mid-1970s, is much more suspicious because it has been accompanied by a cooling of the stratosphere and is accentuated at high latitudes in the Northern Hemisphere and in the winter, which is what one would expect from increasing CO2.

FORBES: Global Warming Flatliners

It is a mode of atmospheric circulation in which the stratosphere is unusually warm and westerly winds, which normally bring warmth from the oceans to northern Europe, are unusually weak.

ECONOMIST: Britain��s cold snap is explained by the Arctic oscillation