Why Earth's ozone hole is pretty big this year

The ozone hole grew pretty large this year — but that's expected.

Researchers from the European Union's Copernicus Atmosphere Monitoring Service announced Tuesday that the ozone hole — a big zone of depleted ozone over the Antarctic region — reached its maximum extent for the year. It swelled to some 23 million square kilometers in size, or 8.9 million square miles, one of the largest and deepest holes of the last 15 years. That's well over twice the size of the U.S.

It's an above-average sized hole, but certainly not extreme or unprecedented, explained Richard Engelen, the deputy director of the Copernicus Atmosphere Monitoring Service. Read more...

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from Mashable https://ift.tt/3jziRzH