Greenland's Ice Sheets Are Getting Cooked By Warm Ocean Currents
The retreat of Arctic sea
While the loss of polar sea ice is troubling, the hidden sublimation of Greenland's ice is of greater concern. That's because these continental ice sheets and
As Greenland's ice warms in the summer, it pushes its way down through fjords and towards the ocean, where some of it breaks off into the sea. This is, of course, happening at an accelerated rate, too-an iceberg the size of Manhattan calved off of Greenland last week. When the ice hits the ocean at sea level, it doesn't melt that quickly-the water is literally ice-cold. But as NASA glaciologists looked deeper beneath the water, they saw that the thicker ice sheets were being carved away faster and more dramatically than they expected by warm currents pushing up from the tropics.
Yesterday we learned that the Earth's sea levels are locked into an
inevitable 3-foot rise
[ NASA ]