The C3S (Copernicus Climate Change Service) and CAMS (Copernicus Atmosphere Monitoring Service) confirmed that the hole in the Ozone layer has healed itself.
The main reason for the hole to heal by itself is the polar vortex.
According to the scientists the closure of the hole is not due to the reduced pollution levels due to COVID-19 lock down.
The hole was 1 million square kilometres wide above the Arctic.
It was the largest pole that was found in the history of Ozone layer.
It was formed due to unusual climatic conditions.
The Polar Vortex is a winter phenomenon.
The polar vortex has been recorded to be extremely powerful, and temperatures inside it have been very cold.
Polar Vortex is cyclonic circular winds that blow in the stratosphere from west to east.
Polar Vortex extends from tropopause through the stratosphere and into the mesosphere.
When the vortex is strongest, cold air is less-likely to plunge deep into North America or Europe.
Ozone layer is found mainly in the upper atmosphere, an area called the stratosphere, between 10 and 50 km from the earth’s surface.