Greenland's growing 'ice slabs' intensify meltwater runoff into ocean

Thick, impenetrable ice slabs are expanding rapidly on the interior of Greenland's ice sheet, where the ice is normally porous and able to reabsorb meltwater. These slabs are instead sending meltwater spilling into the ocean, according to a new assessment, threatening to increase the country's contribution to sea level rise by as much as 2.9 inches by 2100.

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