GREENLAND'S ICE SHEET WILL LOSE ENOUGH WATER TO SUBMERGE THE UNITED STATES IN 20 YEARS, ACCORDING TO A NEW STUDY.

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According to statistics revealed this week by Danish experts, Greenland's massive ice sheet has lost enough ice in the last 20 years to drown the entire United States in half a metre of water.

According to NASA, the Arctic is warming faster than anywhere else on the planet, and melting ice from Greenland is now the primary cause of rising sea levels.

According to Polar Portal, a cooperative initiative combining multiple Danish Arctic research institutes, the Greenland ice sheet has lost around 4,700 billion tonnes of ice since observations began in 2002.

According to the Arctic monitoring website, this amounts to 4,700 cubic kilometres of melted water, which is "enough to cover the entire United States by half a metre" and has contributed 1.2 centimetres to sea level rise.

The findings of Polar Portal are based on satellite imagery from the US-German GRACE programme (Gravity Recovery and Climate Experiment), which revealed that ice melt was most severe at the Arctic territory's beaches, at the ice sheet's edge.

"Independent observations also show that the ice is thinning, that the glacier fronts in fjords and on land are retreating, and that there is a larger degree of melting from the surface of the ice" in these peripheral zones, according to the website.

According to the data, the west coast of Greenland is significantly affected.

Climate change is particularly concerning in the Arctic, which is warming at three to four times the world average, according to scientists.

The faster melting near Greenland's shores can be explained by the warming of the Arctic Ocean, according to a NASA research published in late January.

"At least as much as warm air from above is melting Greenland's glaciers," says the phenomenon.

Greenland's melting ice is currently the primary cause of global ocean rise, and the territory's glaciers are retreating six to seven times faster than they were 25 years ago, according to the US agency.

According to climate scientists, the Greenland ice sheet holds enough water to raise the oceans by more than seven metres, and the Antarctic ice sheet holds enough water to raise the oceans by almost 50 metres.

Although melting has minimal influence on sea levels, the Arctic sea ice cover has diminished significantly, shedding around 13% of its average surface area every ten years.

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