The massive Greenland ice sheet could be facing a point of no return, beyond which it may no longer fully regrow, permanently changing sea levels around the world, warns a new study.
The finding, published in the journal Nature Communications Earth and Environment, means that Greenland's glaciers have passed a tipping point of sorts, where the snowfall that replenishes the ice sheet each year cannot keep up with the ice that is flowing into the ocean from glaciers.
The area of the Greenland ice sheet that is showing indications of melt has been growing daily, and hit a record 56.5% for this year on Wednesday, said Ruth Mottram, a climate scientist with the Danish Meteorological Institute. She says that's expected to expand and peak on Thursday before cooler temperatures slow the pace of the melt.
Washington: Using ice-penetrating radar data, NASA scientists have built the first-ever comprehensive map of layers deep inside the Greenland ice sheet.This new map, prepared on the basis of data collected by NASA's Operation IceBridge and
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