Greenland's fastest-thinning glacier has stopped retreating for the first time in 20 years, NASA found. Jakobshavn Glacier grew 100 feet in height between 2016 and 2017. Researchers suspect the change was brought about by colder water temperatures, causing the glacier to melt more slowly. Temperatures in the North Atlantic Ocean oscillate between warm and cold every five to 20 years. A glacier in Greenland that has been rapidly thinning for the past two decades has stopped retreating, and started to thicken again, a report from researchers at NASA has found . Jakobshavn Glacier has been the fastest thinning glacier in Greenland for around 20 years, but is now thickening once again. "Jakobshavn is now flowing more slowly, thickening, and advancing toward the ocean instead of retreating farther inland," NASA said. "The glacier is still adding to global sea level rise - it continues to lose more ice to the ocean than it gains from snow accumulation - but at a slower rate." Scientists suspect that the rate of shrinkage has slowed because a current brought colder water to the North Atlantic Ocean.
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