Key Melting Greenland Glacier Is Growing Again
WASHINGTON—A major Greenland glacier that was one of the fastest shrinking ice and snow masses on Earth is growing again, a new NASA study finds.
The Jakobshavn glacier around 2012 was retreating about 1.8 miles (3 kilometers) and thinning nearly 130 feet (almost 40 meters) annually. But it started growing again at about the same rate in the past two years, according to a study in Monday’s Nature Geoscience. “That was kind of a surprise,” said Geological Survey of Denmark and Greenland ice and climate scientist Jason Box. Box, who wasn’t part of the study, said Jakobshavn is “arguably the most important Greenland glacier because it discharges the most ice in the northern hemisphere. For all of Greenland, it is king.”
A natural cyclical cooling of North Atlantic waters likely caused the glacier to reverse course, said study lead author Ala Khazendar, a NASA glaciologist on the Oceans Melting Greenland (OMG) project. Khazendar and colleagues say this coincides with a flip of the North Atlantic Oscillation—a natural and temporary cooling and warming of parts of the ocean that is like a distant cousin to El Nino in the Pacific. The water in Disko Bay, where Jakobshavn hits the ocean, is about 3.6 degrees cooler (2 degrees Celsius) than a few years ago, study authors said.
Is Climate Change Science Settled?
When the global warming movement started gaining momentum in the early 1990s, proponents began insisting that climate change science is irrevocably settled and the issue is not up for debate. It’s irrefutable, they said, that human-caused climate change is real, and carbon dioxide and other greenhouse gases resulting from the use of fossil fuels are an urgent threat and must be stopped. That’s still the refrain today but this rigid stance doesn’t sit well with the numerous scientists who don’t agree and who worry about the billions being spent to prevent a tiny amount of anticipated warming—efforts that may, in the end, bring about little if any change.
These so-called skeptics say the climate has historically had warm periods and cool periods and will continue to do so—that’s simply how the climate cycles—and that man-made CO2 is not a pollutant, nor is it on track to cause apocalyptic climate change, as the global warming movement maintains.
“In general, science is never settled, it’s always an ongoing organic process. But they’re trying to abuse the authority of science in order to pursue policy objectives that, for one reason or another, they think are important,” says climatologist and author Patrick Michaels, the director of the Center for Study of Science at the Cato Institute in Washington, D.C. “There has really been no recent convincing evidence that what we would call the view of cataclysmic global warming has any support. I mean, the Earth’s surface temperature continues to warm at a very modest rate. It didn’t warm at all, depending on whose record you look at, from the late 1990s to about 2014—and the only way that a warming was deduced from that record was to change the data, not the observation.”
https://www.theepochtimes.com/key-melting-greenland-glacier-is-growing-again_2853422.html