Beneath the ocean waters off Antartica, massive buried shelves of ice function like buttresses, supporting the continent’s massive ice sheets.
If those buttresses fail, Richard Alley told science writers at a recent conference in State College, Pa., global sea levels will not rise by inches, as predicted by recent climate reports—but instead by as much as 186 feet.
Alley, professor of geosciences at Penn State University, discussed the perilous consequences of rising sea levels, and society's options in the face of an uncertain future, on Oct. 27 during the New Horizons in Science briefing organized by the Council for the Advancement of Science Writing, part of the ScienceWriters2019 conference.
“We can either treat climate change science like a tweet—pretending like it’s an evil liar—or we can use knowledge,” Alley said.
As climate changes, rising sea levels are a concern for countries that border the world’s oceans. According to the Intergovernmental Panel on Climate Change—also known as the IPCC—sea levels will continue to rise for the foreseeable future.