Reports indicate that a large hole in the ozone layer above the Arctic has been closed. This comforting discovery was made by the European satellite system Copernicus. The huge cracks in the ozone, which is about one million square kilometers, has disappeared.
A hole was found in the ozone over the North Pole in late March. The ozone layer protects the earth from the sun's ultraviolet radiation, which causes skin cancer. The big gap has closed in recent days. The first ozone hole was discovered at the North Pole in January 2011. But it was small.
But the hole has nothing to do with the lockdown that is part of the fight against Covid or the lack of air pollution. Instead, the ozone rupture and changes are caused by the polar vortex phenomenon, which brings cold air to the polar region.
Most ozone depletion takes place where the air temperature drops below minus 42 degrees. This is why the ozone rupture first appears above the South Pole. The temperature at the South Pole is minus 62 degrees. However, the polar vortex phenomenon in the North Pole has led to a decrease in temperature and ozone depletion.
Polar vortex temperatures are typically about 20 degrees higher than normal. This year, the Polar Vortex was stronger and more cold. This leads to strong ozone depletion. But as the polar vortex weakens over the past few days, ozone depletion and holes have been reduced.