Even the polar ozone hole.

南北极甚至出现了臭氧空洞。

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NASA says readings from UARS provided conclusive evidence that chlorine in the atmosphere, originating from human-produced chlorofluorocarbons, is at the root of the polar ozone hole.

美国宇航局称，从uars读取的数据提供了决定性证据，证明人类产生的使大气中的含氯的氯氟化合物是造成极地臭氧空洞的根源。

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They have recently been recognized as the dominant source of sea salt aerosol in Antarctica and scientists suspect they may be the main cause of tropospheric ozone depletion during the polar sunrise.

现在这些分子被认为是南极洲海盐浮粒的主要来源。科学家们猜测它们可能是导致南极附近日出时对流臭氧层耗弱的主要原因。

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Dr Solomon discovered that chemical reactions destroy ozone on surfaces such as the ice crystals within high-altitude 'polar stratospheric clouds' as well as on other atmospheric particles high in the atmosphere.

BBC: News | Sci/Tech | Ozone hole reaches record size