At the end of July, 40% of the 4,000-year-old Milne Ice Shelf, located on the north-western edge of Ellesmere Island, calved into the sea.Canada’s last fully intact ice shelf was no more.
On the other side of the island, the most northerly in Canada, the St Patrick’s Bay ice caps completely disappeared.
Two weeks later, scientists concluded that the Greenland Ice Sheet may have already passed the point of no return.Annual snowfall is no longer enough to replenish the snow and ice loss during summer melting of the territory’s 234 glaciers.Last year, the ice sheet lost a record amount of ice, equivalent to 1 million metric tons every minute.The Arctic is unravelling.And it’s happening faster than anyone could have imagined just a few decades ago. Northern Siberia and the Canadian Arctic are now warming three times faster than the rest of the world.In the past decade, Arctic temperatures have increased by nearly 1C.If greenhouse gas emissions stay on the same trajectory, we can expect the north to have warmed by 4C year-round by the middle of the century.
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