Rapidly disappearing Arctic sea ice is about to set a new record after an “absurdly warm” winter at the top of the world. For the second year running, it will have grown to cover less of the Arctic Ocean than ever before.
The revelation comes as scientists are increasingly worried that the heating of the region could escalate out of control, as growing numbers of “feedback mechanisms” – which reinforce and accelerate the process – are being discovered.
Most attention on the melting sea ice so far has been focused on the increasingly low minimum levels it reaches each September. Its nine smallest-ever extents have all occurred in the last nine years, with the record being reached in 2012, when it covered only 3.41 million square kilometres – 44 per cent less than the average of the previous three decades, and a full 16 per cent lower than the…
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