Damages to the ozone layer have been happening across our planet for a long time, such as the holes forming from the layer. This can be caused by human activity and sometimes natural. Luckily, one such hole that was located over the Arctic has closed up on its own. The hole first formed in March and it was recorded to be one of the largest ozone holes over the area. Ozone is responsible for the absorption of UV sun rays, meaning that it is vital to remain healthy for our planet. This is why it’s such a huge relief that these holes can close down by themselves.
Unlike other ozone holes, this hole’s appearance and repairing were not due to human activity. Copernicus Atmosphere Monitoring Service’s scientists were monitoring the area. The scientists claimed that the ozone hole appeared from something natural. A strong polar vortex, or a large low-pressure area created from swirling cold air, was recorded for several weeks in March. This resulted in cold air to remain trapped in the North Pole which formed high-altitude clouds, causing chemical reactions that stimulated the ozone to a depletion once the sunlight returned.
As of now, the polar vortex is starting to break down and the air from the depleted and rich ozone layers are mixing. This caused the hole to heal itself and the levels of ozone began to rise. It’s very unlikely for the Arctic to have depleted ozone layers compared to the Antarctic ozone layer, so the self-healing is incredible news. The Antarctic area is what most people know as scientists discovered in 1985 of a hole above the South Pole’s ozone layer which resulted in enormous changes in aerosols and refrigerants.
Surprisingly, there’s also good news about the Antarctic ozone hole. Measures were taken as part of the Montreal Protocol in 1987 accord which phased out the chemicals created by humans that were harmful to the ozone. Since then, the Antarctic ozone hole is shrinking. By making several changes along with the variations in the Southern Hemisphere’s air pattern, the hole slowly started closing.