Is there a hole in the O zone?
Is there a hole in the O zone?
Antarctic ozone hole is 13th largest on record and expected to persist into November. The 2021 Antarctic ozone hole reached its maximum area on October 7 and ranks 13th largest since 1979, scientists from NOAA and NASA reported today.
Did the ozone hole over Antarctica close in 2020?
Scientists from the Copernicus Atmosphere Monitoring Service (CAMS) are ending 2021 with an announcement worth celebrating: the 2021 Antarctic ozone hole has finally closed. This ozone hole was once larger than Antarctica and reached its maximum size on October 7th.
Is the Antarctic ozone hole still there?
Today, the ozone hole still exists, forming every year over Antarctica in the spring. It closes up again over the summer as stratospheric air from lower latitudes is mixed in, patching it up until the following spring when the cycle begins again.
Is there still a hole in the ozone layer 2021?
Scientists from the Copernicus Atmosphere Monitoring Service confirm that the 2021 Antarctic ozone hole has almost reached its end, following a season with a considerably large and prolonged ozone hole. Its closure will occur only a few days earlier than in 2020, which was the longest lived since 1979.
Why don’t we talk about the ozone hole anymore?
We don’t hear much about the hole in the ozone layer anymore. That’s because we’ve all but fixed it, thanks to consumer choices and a massive international agreement called the Montreal Protocol.
Where is the world’s largest ozone hole located?
The 2020 Antarctic ozone hole grew rapidly from mid-August and peaked at around 24.8 million square kilometres on 20 September 2020, spreading over most of the Antarctic continent. It was the longest-lasting and one of the largest and deepest holes since the ozone layer monitoring began 40 years ago.
How long before the ozone is destroyed?
The latest WMO /UN Environment Programme Scientific Assessment of Ozone Depletion, issued in 2018, concluded that the ozone layer on the path of recovery and to potential return of the ozone values over Antarctica to pre-1980 levels by 2060. This is because of the long lifetime of the chemicals in the atmosphere.
Why did the ozone hole close?
The ozone hole in 2019 was very different. Development of the 2019 hole was stalled by a sudden stratospheric warming (SSW) over the Antarctic, which disrupted the polar vortex (a swirl of cold air in the stratosphere that affects ozone depletion) and restricted the ozone hole’s development, with the result that it was …
How long does the ozone layer have left?
