Greenland temperatures are warmer than before 1,000 years, study finds

The co-author of a study that reconstructed conditions by drilling deep into the ice sheet told AFP on Friday that temperatures in parts of Greenland are warmer than they have been in 1,000 years. It is clear that we need to get this warming under control in order to stop the melting of the Greenlandic ice sheet, according to associate professor Bo Mollesoe Vinther of the University of Copenhagen.

Scientists were able to reconstruct temperatures from north and central Greenland from the year 1000 AD to 2011 by drilling into the ice sheet to retrieve samples of snow and ice from hundreds of years ago.

The results, published in the scientific journal Nature, show that the warming registered in the decade from 2001 -- 2011 exceeds the range of pre-industrial temperature variability in the past millennium with virtual certainty During that decade, the temperature was 1.5 degrees Celsius warmer than the 20th century the study found.

The melting of the Greenland ice sheet is already leading to rising sea levels, threatening millions of people living along coasts that could be underwater in the decades or centuries to come.

Greenland's ice sheet is currently the main factor in swelling the Earth's oceans, according to NASA, with the Arctic region heating at a faster rate than the rest of the planet.

In a landmark 2021 report on climate science, the Intergovernmental Panel on Climate Change IPCC said that the Greenland ice sheet would contribute up to 18 cm to sea level rise by 2100 under the highest emissions scenario.

The massive ice sheet, 2 km thick, contains enough frozen water to lift global seas by over 7 m 23 feet in total.

Countries have agreed to limit warming to well under 2 degrees Celsius under the Paris climate deal.

The global warming signal that we see all over the world has found its way to these very remote locations on the Greenland Ice Sheet, Vinther said.

He warned that we need to stop this before we reach the point where we get this vicious cycle of a self-sustaining melting of the Greenland ice.