Greenland ice sheet set to raise sea levels by nearly a foot, study finds

Human-driven climate change has set in motion massive ice losses in Greenland that couldn’t be halted even if the world stopped emitting greenhouse gases today, according to a new study published Monday.

The findings in Nature Climate Change project that it is now inevitable that 3.3 percent of the Greenland ice sheet will melt — equal to 110 trillion tons of ice, the researchers said. That will trigger nearly a foot of global sea-level rise.

The predictions are more dire than other forecasts, though they use different assumptions. While the study did not specify a time frame for the melting and sea-level rise, the authors suggested much of it can play out between now and the year 2100.

“The point is, we need to plan for that ice as if it weren’t on the ice sheet in the near future, within a century or so,” William Colgan, a study co-author who studies the ice sheet from its surface with his colleagues at the Geological Survey of Denmark and Greenland, said in a video interview.

“Every study has bigger numbers than the last. It’s always faster than forecast,” Colgan said.