Dual benefits ozone protocol: Ozone layer and Climate change

The 1987 Montreal Protocol - restricting the use of ozone-depleting substances - has helped both to reduce global warming and to protect the ozone layer. The benefit to climate achieved by the Montreal Protocol alone at present greatly exceeds the initial target of the Kyoto Protocol. The effects of the Montreal Protocol on climate will become smaller in the future, while emission reductions after 2012 under the Kyoto Protocol will potentially have much larger effects on climate.