Greenland glacier growing again NASA

Greenland glacier growing again NASA Fastest Melting Glacier Is Growing Again the calving front of Jakobshavn Glacier, one of the fastest shrinking ice and snow masses on Earth, that was found to be growing again at least at its edge.

Greenland glacier growing again NASA
Greenland glacier growing again NASA

In 2015, Greenland’s largest ice mass lost AN iceberg the dimensions of Manhattan. But the Jakobshavn ice mass, one in all the quickest shrinking ice and snow lots on Earth is growing again, according to a new NASA study.

In the study, which was published Monday in Nature Geoscience, researchers from NASA’s Oceans Melting Greenland (OMG) mission report that since 2016, Jakobshavn’s ice has enlarged insignificantly due to moderately cool ocean waters at its core, which have provoked the glacier to reduce down its melt.

Water temperatures in the vicinity of the glacier are now colder than they have been since the mid-1980s, according to NASA.“At 1st we tend to didn’t believe it,” Ala Khazendar of NASA’s reaction propulsion Laboratory aforementioned.

“We had just about assumed that Jakobshavn would simply keep occurring because it had over the last twenty years.” However, the OMG mission has recorded cold water close to Jakobshavn for three years in a row.

Greenland glaciers melting
Greenland glacier growing again NASA

The growth reverses the glacier’s 20-year trend of thinning and shrinking in 2012, it was retreating about 1.8 miles and thinning nearly 130 feet annually. But the study’s authors and other scientists think this is temporary.

The researchers assume that frozen water did set in movement by a weather pattern designated the [North Atlantic Oscillation NAO], which begins the arctic Atlantic Ocean to change moderately between warm and cold every {5 to 20 years].

The climate pattern settled into a replacement part recently, cooling the Atlantic generally. This change was among some additional cooling in 2016 of the waters on Greenland’s southwest coast, that flowed up the geographic area, eventually reaching Jakobshavn.

Wide view of the calving front of Jakobshavn Glacier from the window of a NASA research plane. When the climate pattern flips once more Jakobshavn can possibly begin fast and cutting once more.

And even with the Jakoshavn’s surprising growth, the study stresses the importance of looking at what is happening with the whole Greenland ice sheet itself and the overall climate outlook the whole Greenland ice sheet is still losing lots of ice

Greenland glacier growing NASA
Greenland glacier growing again NASA

Jakobshavn drains only about 7percent of the entire ice sheet, so mass loss from the rest of the ice sheet would still outweigh the glacier’s slight expansion. Jakobshavn is obtaining a brief break from this climate pattern.

But in the long run, the oceans are warming and seeing the oceans have such a large impact on the glaciers is dangerous news for Greenland’s ice sheet, said Josh Willis chief investigator of the OMG mission.

A vessel navigates past icebergs that stone-broke aloof from the Jakobshavn ice mass in July 2013. Researchers hypothesized that the speedy retreat of the ice mass began with the first 2000s loss of the ice mass’s shelf ice a floating extension of the glacier that slows its flow.

When ice shelves disintegrate, glaciers usually speed up in response. Jakobshavn has been fast every year since losing its shelf ice and its front (where the ice reaches the ocean) has been retreating. It lost most ice between 2003 and 2016 that its thickness top to bottom shrank by 500 feet (152 meters).

The research team combined earlier data on ocean temperature with data from the OMG mission, which has measured ocean temperature and salinity around the entire island for the last three summers.

They found that in 2016, water in Jakobshavn’s recess cooled to temperatures not seen since the Nineteen Eighties. The team suspects that widespread Atlantic cooling and the dramatic cooling of the waters.

That reached the glacier were driven by a shift in the North Atlantic Ocean climate pattern the cooling is temporary and warm waters will return when the North Atlantic Ocean shifts to a warm phase once again.

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