According to recent studies, a large portion of the Greenland ice cap is on the verge of a turning point, beyond which rapid melting would be unavoidable even if global warming was stopped.

Boers said the Greenland ice sheet dynamics were very complex and that using today's incomplete knowledge to estimate a precise date when a tipping point is passed would give a false sense of certainty.

Beyond rising sea levels, large-scale melting of the Greenland ice sheets will have long-term environmental implications. It can stop the Gulf Stream ocean current, with ramifications for the Amazon rainforest and tropical monsoons.

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