New Study Warns Doomsday Glacier Could Raise Sea Levels Twice As Much As Estimated

Thwaites Glacier in Antarctica may contribute up to 30 millimeters of global sea-level rise by 2100, twice previous estimates, according to a study published in Nature Communications.

Researchers from the University of California, Irvine, and NASA’s Jet Propulsion Laboratory developed an updated ice-sheet model that accounts for changes across the glacier’s grounding zone. The model reconstructed historical changes four times more pronounced than those indicated by traditional approaches.

Co-author Eric Rignot warned that the findings point to greater coastal flooding risks than previously anticipated as warming seawater erodes the glacier from below.

However, British Antarctic Survey marine geophysicist Robert Larter said further research is needed for reliable predictions. Scientists plan a 2028 expedition to collect direct observations and improve understanding of the glacier’s behavior.

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Scientists find Doomsday Glacier is melting ‘more aggressively’ than thought, with big impacts for sea level rise https://t.co/NEsgL9OuRn

— CTV News (@CTVNews) October 15, 2026

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tippinsightsTIPP Staff