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Path to recovery of ozone layer passes a significant milestone

9/1/2022

 
An annual analysis of air samples collected at remote sites around the globe that is tracking a continued decline in the atmospheric concentration of ozone-depleting substances shows the threat to the ozone layer receding below a significant milestone in 2022, NOAA scientists have announced.  In early 2022, the overall concentration of ozone-depleting substances in the mid-latitude stratosphere had fallen just over 50 percent back to  levels observed in 1980, before ozone depletion was significant. This slow but steady progress over the past three decades was achieved by international compliance with controls on production and trade of ozone-depleting substances in the Montreal Protocol on Substances that Deplete the Ozone Layer.  - NASA

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