Previously, researchers had paid more attention to Greenland's south east and north west regions, where for some time huge chunks of ice have broken off the mainland and floated into the Atlantic.
For the study published Monday in the Proceedings of the National Academy of Sciences, the team found the rate of ice loss had accelerated to almost four times what it was in 2003 by 2012, much of that coming not from glaciers calving into the sea but from large rivers of meltwater from the ice sheet itself. The Eisverlust has increased since 2003, partly significantly, write the researchers, Michael Bevis of the Ohio State University in a study. On the Central ice mass of Greenland in the country's interior in the summer due to higher temperatures initially superficial melting water lakes and ponds on the ice.
That means that in the southwestern part of Greenland, growing rivers of water are streaming into the ocean.
"Transfer of ice mass to the oceans is the second-largest contributor to sea-level rise".
Bevis argues that we're on a very slippery slope downwards - nearly a point of no return - where irreversible changes have shifted the environment and cycles of weather, which will only continue to make Greenland's ice melt at an increasing rate.
"We knew we had one big problem with increasing rates of ice discharge by some large outlet glaciers".
According to the expert, the rising sea level caused by the fast Greenland ice meltdown is going to affect Canada's East Coast like Newfoundland and Labrador, but also the U.S. coastal cities like NY and Miami.
And there is no turning back, Bevis said.
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"This is going to cause additional sea level rise". Those researchers said the data shows that Greenland's ice could be nearing a new tipping point where slight changes in temperatures can result in massive losses of ice, leading to coastal flooding around the world.
Gravity Recovery and Climate Experiment (Grace) involves twin satellites that measure ice loss across Greenland. That amount of ice was enough to raise the global sea level by 0.03 inches a year.
Prof Bevis' team used data from GRACE and from Global Positioning System stations scattered around Greenland's coast to identify changes in ice mass.
Bevis and his team estimated that Greenland's melting is accelerating so much in light of the fact that the effects of a natural atmospheric circulation cycle, called the North Atlantic Oscillation, are being intensified by the broader warming that the planet is facing. The sensitivity "implies that we, as humans, can control how rapidly the ice sheet changes in the future", he included, alluding to the possibility that humanity can reduce greenhouse gas emissions that eventually warm the atmosphere.
"The only thing we can do is adapt and mitigate further global warming", he said.
He said: "These oscillations have been happening forever".
Global ice melt has been a major concern over the past few years and new numbers warn that Greenland's ice is melting at a rate four times that of the rate in 2003.
The ice above the Arctic Circle is disappearing far quicker than experts previously thought, and it's feared this will lead to faster sea level rises as Earth's atmosphere continues to warm.