Greenland ice sheet melting may soon pass point of no return, study warns. ‘We might be seeing the beginning of a large-scale destabilisation,’ scientist warns. Part of the Greenland ice sheet could soon cross the point of no-return after which the rate of melting outpaces the rate of snow fall, scientists have warned. Scientists analysing arctic data said the situation could soon reach a “tipping point” and warned that they “urgently” need to understand how the effects of melting affect each other. The Greenland ice sheet contains enough water to raise the global sea level by seven metres, a change which would displace millions of people.
Independent 18th May 2021 read more »
While U.S. Secretary of State Antony Blinken draws attention to climate change in the Arctic at meetings with other national officials this week in Iceland, an even greater threat looms on the other side of the planet. New research shows it is Antarctica that may force a reckoning between the choices countries make today about greenhouse gas emissions and the future survival of their coastlines and coastal cities, from New York to Shanghai. That reckoning may come much sooner than people realize. The Arctic is losing ice as global temperatures rise, and that is directly affecting lives and triggering feedback loops that fuel more warming. But the big wild card for sea level rise is Antarctica. It holds enough land ice to raise global sea levels by more than 200 feet (60 meters) – roughly 10 times the amount in the Greenland ice sheet – and we’re already seeing signs of trouble.
The Conversation 17th May 2021 read more »