Climate change key driver of record-low Antarctic sea ice

Climate change played a key role in last year's record-low levels of Antarctic sea ice, a study found.

Scientists from the British Antarctic Survey found that human-caused global warming resulted in a once-in-2 000-year low in ocean surface around the continent blanketed by ice. Scientists, having analysed 18 distinct climate models, found that climate change quadrupled the likelihood of such large and rapid melting events.

But when highly reflective snow and ice give way to dark blue ocean, the same amount of the Sun's energy that was bounced back into space is absorbed by water instead, accelerating the pace of global warming.Unlike the Arctic, where sea ice has been declining since satellite records began in the 1970s, the melt trend in Antarctica is a more recent phenomenon.But 2017 brought a sharp decline, followed by several years of low ice levels.

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