Depletion of the Ozone Layer in the 21st Century

A paper in Angewandte Chemie suggests that models predict that climate change will lead to an accelerated recovery of the ozone layer. However, reliable predictions are complicated by the ozone-depleting effect of N2O. If emissions of this greenhouse gas remain at current levels, by 2050 they could account for 30% of the ozone-destroying effects of chlorofluorocarbons at their peak.1

It is concluded that "the regulation of N2O levels in the atmosphere is not only important for the protection of Earth's climate (Kyoto Protocol) but also for the future evolution of the stratospheric ozone layer (Montreal Protocol). A reduction of N2O emissions would decrease the anthropogenic greenhouse effect and it would have a positive impact on the recovery of the ozone layer."

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