The ozone hole over Antarctica usually reopens in spring every year, but this year it has appeared several weeks earlier than usual – and the delayed effects of the Tonga volcano eruption are responsible.
NASA/Goddard Earth Observing System
The ozone hole over Antarctica has opened weeks earlier than usual and could grow to near-record size due to delayed effects of the massive Hunga Tonga-Hunga Ha’apai volcanic eruption last year.since the 1987 Montreal Protocol led to the phase-out of ozone-depleting chemicals like chlorofluorocarbons , but it opens and closes seasonally every year.Advertisement
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