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Greenland Sees Record Early Ice Sheet Melting
People, Environment

Greenland Sees Record Early Ice Sheet Melting

Greenland’s massive ice sheet has experienced such an early and extensive melt that scientists this week thought their models were broken when they saw the data.
Summer-like warm temperatures and rain resulted in about 12% of the ice sheet surface area - 1.7 million square kilometers - showing signs of melting ice on Monday, scientists at the Danish Meteorological Institute said.
“We had to check that our models were still working properly,” climate scientist Peter Langen told DMI’s Polar Portal website.
Such a melt is normal for late May, but not mid-April, according to Al Jazeera.
Before now, the top three dates for reaching that milestone were previously: May 5, 2010; May 8, 1990; and May 8, 2006.
“Something like this wipes out all kinds of records, you can’t help but go, ‘This could be a sign of things we’re going to see more often in the future,’” Langen said.
-- More Extreme, More Common
A weather system is bringing warm temperatures to Greenland and funneling lots of warmer-than-normal rain up from the south.
Scientists said that this is part of a natural weather system, but man-made climate change has worsened it.
“Things are getting more extreme and they’re getting more common,” said NASA ice scientist Walt Meier.
Greenland’s ice sheet melting is one of the more visible and key signs of man-made global warming from the burning of fossil fuels because it is causing seas to rise, and putting coastal areas at risk, Meier said.
If the entire Greenland ice sheet melted, which would take centuries, it could add six meters or more to the global sea level, Meier added.
But within the next century, Greenland ice melt alone could raise it by a meter or so, he said. “The concern is things are moving faster than we thought,” Meier said.

 

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