Observations revealed a rapid thinning of this ice sheet that could contribute more to sea level rise than previously thought.
Yellow areas are where the simulation shows the greatest amount of thinning, adding up over the years to more than 200 meters in places. Model results indicate that by the end of the century, areas where ice is thinning by 2 to 4 meters per year will have spread up to 250 kilometers inland.
“Our simulations suggest that the Northeast Greenland Ice Stream will contribute between 13.5 to 15.5 millimeters to sea level rise by 2100,” Khan said. “This is mainly because of inland thinning and speed-ups, which were not captured in previous models. Thinning and speed-ups are not limited to ice marginal regions but propagate deep into the interior.”stream’s speed and acceleration.
“GPS data together with satellite data to detect inland flow accelerations could be useful to improve our understanding of how the ice sheets are affected by climate change and reduce the uncertainty in sea level rise projections,” Khan added.
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