The ozone layer will also recover at different speeds in different parts of the atmosphere, says Banerjee. Ozone depletion cools the air, strengthening the winds of the polar vortex and affecting winds all the way down to the lowest layer of Earth’s atmosphere. Since 2000, parts of the ozone layer have recovered at a rate of 1-3 per cent every ten years, the latest Scientific Assessment of Ozone Depletion estimates. T he depleted protective ozone layer that has left a gaping hole over Antarctica is showing signs of recovering, a UN panel of scientists said Wednesday.. At projected rates the “Northern Hemisphere and mid-latitude ozone will heal completely by the 2030’s”, UNEP said, with the Southern Hemisphere repaired by the 2050’s, and Polar Regions in the following decade. Although some reports claim that the ozone layer over Antarctica is recovering, it’s too early to make a definitive call. Ozone recovery shock: Nasa says hole in Ozone Layer should be 'half closed in 5 years' THE INFAMOUS hole in the ozone layer discovered around 40 years ago is … Measurements at surface monitoring stations show that the amount of ozone-destroying chemicals at the surface has been dropping since about 1994-1995. The Ozone Layer is Not Recovering and We Don’t Know Why One thing we do know is that we need to keep watch over both the environment and agreements … Ozone layer is healing thanks to 'growing evidence' the Montreal Protocol works. Ozone Layer Recovery Is Being Undermined by Pollution From U.S. Companies The EPA has declined to consider the ozone-depleting potential of chemicals released by U.S. companies. The amount is now about 10-15% down on that peak.