南极环流（The circulation）是一种寒流，处于南极洲外围之中。
综上，环流变化解释了春季发生在南极臭氧层的所有年际变化，Salby及其同事们写道。
Taken together, the two observed that circulation changes accounted for "virtually all" of the year-to-year changes in springtime Antarctic ozone, Salby and colleagues write.
这是由于被称为南极绕极环流的顺时针环流造成的。
That's because of a clockwise current of water called the Antarctic circumpolar current.
南极海冰的变化和全球大气环流关系密切。
The change of Antarctic sea ice and global atmospheric circulation are related closely.
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