Greenland's ice melting rate increases four times in nine years

Greenland's ice melting faster than scientists previously thought – study

Greenland's Melting Ice Sheet Nears Tipping Point

However, the fact that the ice is melting faster and faster, even inland, and running out as a river of water, "that is a surprise", he included.

If Greenland's entire ice sheet, which is 3km thick in parts, were to melt it would lead to the world's seas to rise by 20ft.

The study, published in Proceedings of the National Academy of Sciences, used data from Nasa's gravity recovery and climate experiment (known as Grace) and Global Positioning System stations scattered across Greenland to analyze changes in ice mass.

"Transfer of ice mass to the oceans is the second-largest contributor to sea-level rise".

Which leads to the entire point of this post: Regardless of where scientists look they see the unequivocal fact that humans are warming our climate to unsafe levels.

Most recent research on Greenland's melting has focused on the island's southeast and northwest regions, where outlying glaciers calve large icebergs into the Atlantic Ocean.

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"The only thing we can do is adapt and mitigate further global warming - it's too late for there to be no effect", the study's lead author, Michael Bevis, told CNN.

"We knew we had one big problem with increasing rates of ice discharge by some large outlet glaciers", said Prof.

The outcome of this finding is that south-west Greenland, which had not been considered a serious threat, now looks as if it will become a major future contributor to sea-level rise.

"This is going to cause additional sea level rise".

Greenland's ice sheet is melting at an accelerated rate, faster than previously estimated.

"These oscillations have been happening forever", he said. "It had to be the surface mass - the ice was melting inland from the coastline", PTI quoted Michael Bevis, a professor at The Ohio State University in the USA, as saying.

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The researchers analyzed data that were obtained in the framework of the mission GRACE (Gravity Recovery and Climate Experiment), and stated that the ice sheet of Greenland is melting faster than was thought before. 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.

Cities like NY and Miami will bear the brunt of the damage but island nations will be particularly vulnerable to the damage.

The Greenland ice sheet covers nearly the entire island and extends over 1.7 million square kilometers. They also found this acceleration largely took place in Greenland's southwest.

The North Atlantic Oscillation is an irregular movement of air currents, and it tends to bring warm air to Greenland. "But suddenly, because of this global warming, this relatively small fluctuation can push you over the top [and cause] a degree of melting we haven't seen before".

Between year 2002 and 2016 Greenland lost about 280 gigatonnes of ice per year.

While the amount varies from region to region, sea levels rose worldwide by an average of 20 centimetres (about eight inches) in the 20th century.

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Bevis and his team hypothesize that Greenland's melting is accelerating so much because the effects of a natural atmospheric circulation cycle, called the North Atlantic Oscillation, are being amplified by the broader warming that the planet is facing.

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