The Antarcticozonehole is more severe this year than ever before, and ozone levels over temperate? Regions are dipping as well.
南极洲臭氧层破洞今年更趋严重,而且温带地区上空的臭氧含量也在下降。
2
The formation of Antarcticozonehole is mainly related to the polar stratospheric clouds and the processes of heterogeneous chemistry.
南极臭氧洞的形成与南极平流层云及其非均相化学过程有很大关系。
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However, CFCs can persist for decades in the stratosphere-the Antarcticozonehole is still there, though it's expected to grow smaller in coming decades.