The unprecedented 2020 northern hemisphere #OzoneHole has come to an end. The #PolarVortex split, allowing #ozone-rich air into the Arctic, closely matching last week's forecast from the #CopernicusAtmosphere Monitoring Service.
— Copernicus ECMWF (@CopernicusECMWF) April 23, 2020
More on the NH Ozone hole➡️https://t.co/Nf6AfjaYRi pic.twitter.com/qVPu70ycn4
A polar vortex is a strong and sustained push of cold, swirling air.
The European Commission’s Copernicus satellite tracked the hole. The ozone works as a barrier protecting Earth from the sun’s harmful ultraviolet radiation.
Holes over Antarctica form seasonally. While Arctic ozone holes are more rare, this is not the first time one has formed. A similar event caused an ozone hole in 2011, CNET reported.
A hole over Antarctica is showing signs of reducing since a 2018 chemical ban, according to NASA.
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