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SOURCE: Climate Central

DATE: December 13, 2017

SOURCE: Antarctic ice sheet models double the sea-level rise expected this century if global emissions of heat-trapping pollution remain high, according to a new study led by Dr. Robert Kopp of Rutgers University and co-authored by scientists at Climate Central.

The new study, “Evolving understanding of Antarctic ice-sheet physics and ambiguity in probabilistic sea-level projections,” projects a range of potential levels of sea rise under different greenhouse gas emissions scenarios. Even the lowest levels of projected sea-level rise would require heavy investments in adaptation efforts and could require residents and businesses to relocate. Greater levels of sea-level rise increase economic and social impacts.

The median projection for sea-level rise from 2000 to 2050 in the study was roughly 30 cm (one foot) under RCP8.5. The research indicated that sea levels in 2050 will be affected little by the amount of greenhouse gas pollution that’s released during the coming years.

The new projections warn of runaway risks during the second half of the century, with those risks substantially higher if current levels of greenhouse gas emissions continue.