Published: Fri, December 07, 2018
Research | By Jody Lindsey

The Greenland shield is melting at a record pace - the scientists

The Greenland shield is melting at a record pace - the scientists

Ice loss from Greenland is one of the key drivers of global sea level rise, according to the study.

Greenland's ice sheet is melting at a scale "off the charts" compared with the previous four centuries, warns a new study.

In a paper published in the journal Nature, scientists from the United States, Belgium and the Netherlands analysed melt layers in ice cores in western Greenland to develop a record spanning 350 years. It suggests that if the trend of warmer summers continues causing unprecedented rates of melting it could accelerate the already fast pace of sea level rise. At lower heights melt water directly runs off the ice sheet, but at escalated heights some percolates down porous compressed snow vociferated firn prior to refreezing to constitute layer not as same as the growth layers discovered in trees.

To determine the acceleration of the melt, researchers used a drill the size of a traffic-light pole to extract samples from the ice sheet more than 6,000ft above sea level. Greenland experiences seasonal melt during the warm summer days, and at low elevations, the melting is more intense.

While huge chunks of ice popping off Greenland's margins get more attention, the steady runoff of water from its surface is now the largest contributor to Greenland's rapid slim-down.

The genuine final message is its just two last decades we have observed the unparalleled rise in runoff said Sarah Das, a glaciologist at Woods Hole Oceanographic Institution and co-author on the study.

A team of scientists to reconstruct the melting of glaciers over the last 364 years.

Rising seas threaten low-lying cities, islands and industries worldwide. Another noteworthy aspect of the findings is how little additional warming it now takes to cause huge spikes in ice sheet melting. They were able to go back as far as the 17th century.

Super Smash Bros. Ultimate: How to get Piranha Plant
As revealed before, Persona 5's Joker will be the first character as part of the post-launch plans for Super Smash Bros . Ultimate , teased that the downloadable characters for the forthcoming fighting game would be huge, he was not kidding.

In General, noted a fifty percent increase in the total volume of melt water in the ice cover since the start of the industrial era. Instead of escaping the ice sheet, the short-lived meltwater forms icy bands that stack up layers of densely packed ice over time.

Scientists say the amount of meltwater running off of the Greenland ice sheet has increased in modern times because of climate change, and rapid increases could be ahead.

"We have had a sense that there's been a great deal of melting in recent decades, but we previously had no basis for comparison with melt rates going further back in time", he said.

Researchers from the MIT-WHO Joint Program, University of Washington, Wheaton College, University of Leige, Desert Research Institute, and Utrecht University also worked on the study.

"To be able to answer what might happen to Greenland next, we need to understand how Greenland has already responded to climate change", he said.

"We find that for every degree of warming, melting increases more and more - it outpaces the warming", added Luke Trusel, a geologist from Rowan University and also an author of the study.

"Warming means more today than it did in the past", Trusel said in the statement.

Like this: