Recent rise in CFC emissions could delay ozone hole healing by almost 20 years

The recently discovered increase in emissions of trichlorofluoromethane (CFC-11) may delay the recovery of the Antarctic ozone hole by over a decade if it continues, suggests a modelling study in Nature Communications. Although uncertainties exist regarding the levels of CFC-11 emissions and how they may vary, a rapid halt to their occurrence may limit the delay to only a few years.

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