Dramatic Turnabout: 2020's Antarctic Ozone Hole Is Large, Deep, and Persistent

It's half as large as last year's, but it would have been much worse without the ban on ozone-depleting chemicals.

Oct 30, 2020 7:15 PMOct 30, 2020 7:49 PM

The Antarctic ozone hole on Sept. 20, 2020, when concentrations of the gas reached their lowest extent for the year. Purple and blue is where ozone is lowest. (Credit: NASA)

This year's stratospheric ozone hole over Antarctica grew by 3.3 million square miles over last year's.

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