A decades-old global environmental pact has averted huge amounts of sea ice loss in the Arctic, new research shows.
Banning ozone-depleting gases under the historic 1987 Montreal Protocol has delayed the first, feared ice-free Arctic summer by as much as 15 years, the study found –"While stopping [sea ice loss] was not the primary goal of the Montreal Protocol, it has been a fantastic by-product,"Aside from destroying
in the atmosphere, the CFCs outlawed under the Montreal Protocol are also heat-trapping gases. Though not as abundant as other greenhouse gases such as carbon dioxide , studies like this one show CFCs can have a real impact on global warming. England and Lorenzo Polvani, a geophysicist from Columbia University in the US, used climate models to simulate different 'worlds' the Montreal Protocol helped avoid.
"Our findings clearly demonstrate that the Montreal Protocol has been a very powerful climate protection treaty, and has done much more than healing the ozone hole over the South Pole,"What's more, most of the negative consequences that opponents of the Montreal Protocol predicted
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