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.
Biden to Give Prime-Time Speech on ‘Soul of the Nation' as Voters Prepare to Cast Midterm BallotsOne of the study authors said that more than 120 trillion tons of ice is already doomed to melt from the warming ice sheet’s inability to replenish its edges. When that ice melts into water, if it were concentrated only over the United States, it would be 37 feet deep.
Pennsylvania State University glaciologist Richard Alley, who wasn’t part of the study but said it made sense, said the committed melting and sea level rise is like an ice cube put in a cup of hot tea in a warm room. Although 10 inches doesn't sound like much, that's a global average. Some coastal areas will be hit with more, and high tides and storms on top of that could be even worse, so this much sea level rise “will have huge societal, economic and environmental impacts,” said Ellyn Enderlin, a geosciences professor at Boise State University.
Time is the key unknown here and a bit of a problem with the study, said two outside ice scientists, Leigh Stearns of the University of Kansas and Sophie Nowicki of the University of Buffalo. The researchers in the study said they couldn't estimate the timing of the committed melting, yet in the last sentence they mention, “within this century,” without supporting it, Stearns said.
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'Zombie ice' from Greenland will raise sea level 10 inchesA new study finds that Greenland has more than 120 trillion tons of ice that can be thought of as zombie ice that's going to raise sea level globally by at least 10 inches.
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