Greenland Ice Dome Collapse Sheds Light on Future Sea-Level Rise
A study released Monday in the journal Nature revealed that Greenland’s Prudhoe Dome—comparable in size to Luxembourg—vanished roughly 7,000 years ago. Researchers reached this conclusion after drilling a deep ice core that uncovered sun-bleached sand, evidence of a warmer post-glacial era.
Experts explained that the region endured summer conditions 3–5°C hotter than today, a scenario that could return by 2100 due to human-driven climate change.
The ongoing loss of Greenland’s ice sheet could raise sea levels by several tens of centimeters, potentially reaching up to 1 meter (3.2 feet) within this century. This has led scientists to refine projections by examining how quickly different parts of the ice sheet may disappear.
The Prudhoe Dome findings add to scarce evidence beneath Greenland’s ice sheet, showing that the area was ice-free hundreds of thousands of years ago and that the entire sheet melted as recently as 1.1 million years ago.
Although researchers cautioned that current melting differs from ancient events caused by natural orbital variations, they emphasized that these insights can strengthen climate models used to predict Greenland’s response to modern warming.
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