The unexpected link between the ozone hole and Arctic warming: U of T expert
One of the earliest climate model predictions of how human-made climate change would affect our planet showed that the Arctic would warm about two to three times more than the global average. Forty years later, this “Arctic amplification” has been observed first-hand.
Record-breaking Arctic warming and the dramatic decline of sea ice are having severe consequences on sensitive ecosystems in the region.
But why has the Arctic warmed more than the tropics and the mid-latitudes?
We now know that this is due, in part, to tiny concentrations of very powerful greenhouse gases, including ozone-depleting substances such as chlorofluorocarbons (CFCs).
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