ozone_depleting_gas_index_1992_2016.png

Ozone-depleting gases reached their peak concentrations in the mid-latitudes (purple) in the mid-1990s and over Antarctica (blue) in the early 2000s. Because it takes decades for chlorofluorocarbons to degrade, it will be many decades before the ozone hole recovers. NOAA Climate.gov graph, based on data from NOAA Earth System Resources Lab.