NASA has published a new video. It shows how a huge ozone hole over Antarctica has grown in 2021.

In a new video, NASA showed how the giant ozone hole over Antarctica has grown in size this year, setting a new record. Now its area is comparable to that of North America. The hole is not expected to close until late November this year.

The cold winter in the Southern Hemisphere and the possible effects of global warming have led to the fact that the hole has grown to a colossal size – now it covers an area of ​​24.8 million km². In the video, you can see how the ozone layer is depleted. This process is monitored by three satellites – Aura, Suomi-NPP and NOAA-20, their data is used by NASA and the US National Oceanic and Atmospheric Administration.

NASA noted that if the Montreal Protocol had not come into force, the ozone hole would have been larger by about 4 million km². It was developed in 1987 with the goal of protecting the ozone layer by phasing out some of the chemicals that deplete the ozone layer. When countries signed the protocol, scientists assumed that the ozone layer would recover by 2060. But this process is happening much slower than expected.