This year, the hole in the ozone layer is more worrying than the previous ones. Scientists claim it is larger than Antarctica.
Each year, a hole forms in the ozone layer during spring in the southern hemisphere. But this year it is much bigger than the other years.
Scientists from the Copernicus Atmosphere Monitoring Service announced on Thursday that the ozone hole is now larger than Antarctica, 75% larger than the largest size it has ever been. achieved in recent years.
Copernicus director Vincent-Henri Peuch announced that “this year, the ozone hole has developed as expected at the start of the season.” But very quickly, things changed:
“Now our forecast shows that this year’s hole has evolved into a larger hole than usual.”
No return to normal before 2060 or 2070
A similar phenomenon had already occurred last year, with a development of the size of the normal hole in September, which turned into “one of the most extensive holes in the ozone layer over time in our data “, again according to Copernicus.
Copernicus monitors the ozone layer, which protects the planet from ultraviolet rays, using computer models and satellite observations. If signs of recovery are visible, scientists estimate that the ozone layer will not be fully recovered until 2060 or 2070.
The hole in the ozone layer is caused by chemical particles like chlorine and bromine, moving in the stratosphere, creating catalytic reactions during the Antarctic winter. During this period, a polar vortex forms and it allows these chemical particles to deplete the ozone layer, according to NASA and Copernicus. But when it weakens and breaks down as temperatures warm, ozone levels return to normal.