Greenland’s rapidly melting ice sheet will eventually raise global sea level by at least 10.6 inches, according to a new study. That's because of zombie ice.
A boat navigates at night next to large icebergs in eastern Greenland on Aug. 15, 2019. Zombie ice from the massive Greenland ice sheet will eventually raise global sea level by at least 10 inches on its own, according to a study released Monday. Zombie or doomed ice is still attached to thicker areas of ice, but it’s no longer getting fed by those larger glaciers.
“It’s dead ice. It’s just going to melt and disappear from the ice sheet,” Colgan said in an interview. “This ice has been consigned to the ocean, regardless of what climate scenario we take now.” What scientists did for the study was look at the ice in balance. In perfect equilibrium, snowfall in the mountains in Greenland flows down and recharges and thickens the sides of glaciers, balancing out what’s melting on the edges. But in the last few decades there’s less replenishment and more melting, creating imbalance. Study authors looked at the ratio of what’s being added to what’s being lost and calculated that 3.
Icebergs are seen through a window of an airplane carrying NASA scientists as they fly on a mission to track melting ice in eastern Greenland on Aug. 14, 2019.
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