The Arctic could see all of its sea ice melt in the summer much sooner than expected, according to a new study.
The Nature Communications study analyzed Arctic sea ice changes from 1979 to 2019. The ice builds in the winter and progressively melts throughout the summer, regularly reaching its lowest point each September.
Once the Arctic becomes ice-free, it will be tougher to build back, Min said. Without ice already there, it will take longer for ice to build up through the winter before temperatures warm up again. The effects of an ice-free Arctic could have further climate implications across the planet, too. Melted ice would give the ocean more heat exposure, causing additional warming. It would also create more shipping trade routes near the Arctic, further expanding the opportunities for emissions.
“This would affect human society and the ecosystem both within and outside the Arctic, through changing Arctic marine activities as well as further accelerating the Arctic warming and thereby altering Arctic carbon cycling,” the study said in regards to an ice-free Arctic.
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