Quantcast
Connect with us

Greenland ice sheet melting faster than thought: study

Published

on

Greenland’s ice sheet may have completely melted within the next millennium if greenhouse gas emissions continue at their current rate, according to a new study with implications for sea-level rise around the world.

The Greenland ice sheet holds the equivalent of seven meters (yards) of sea level.

“If we continue as usual, Greenland will melt,” said lead author Andy Aschwanden, a research associate professor at the University of Alaska Fairbanks’ Geophysical Institute.

It is the most recent warning about warming in the world’s coldest regions.

“What we are doing right now in terms of emissions, in the very near future, will have a big long-term impact on the Greenland ice sheet, and by extension, if it melts, to sea level and human society,” Aschwanden said.

ADVERTISEMENT

The study, which used data from NASA’s Operation IceBridge airborne campaign and was published in Science Advances, is the latest to suggest a much greater rate of melt than was estimated by older models.

The model relies on more accurate representations of the flow of “outlet glaciers,” river-like bodies of ice that connect to the ocean.

“Outlet glaciers play a key role in how ice sheets melt, but previous models lacked the data to adequately represent their complex flow patterns,” NASA said in a statement about the study.

ADVERTISEMENT

“The study found that melting outlet glaciers could account for up to 40 percent of the ice mass lost from Greenland in the next 200 years.”

As ocean waters have warmed over the past two decades, they have melted the floating ice that once shielded the outlet glaciers.

As a result, “the outlet glaciers flow faster, melt and get thinner, with the lowering surface of the ice sheet exposing new ice to warm air and melting as well.”

ADVERTISEMENT

In the next 200 years, the ice sheet model shows that melting at the present rate could contribute 48 to 160 centimeters (19 to 63 inches) to global sea level rise, 80 percent higher than previous estimates.

In October, the UN’s Intergovernmental Panel for Climate Change (IPCC) reported that avoiding global climate chaos will require a major transformation of society and the world economy that is “unprecedented in scale,” and warned time is running out to avert disaster.


Report typos and corrections to [email protected].
READ COMMENTS - JOIN THE DISCUSSION
Continue Reading

Facebook

‘This is his plan to pit us against each other — to continue to enrich his friend’: Ilhan Omar demands Trump’s impeachment

Published

on

Rep. Ilhan Omar (D-MN) ripped President Donald Trump on Monday for his "blatantly racist" attacks on the four young women of color known as "The Squad."

Omar made her remarks in a press conference with Reps. Alexandria Ocasio-Cortez (D-NY), Ayanna Pressley (D-MA), and Rashida Tlaib (D-MI).

"This country was founded on the radical idea that we are created equal and endowed by our creator with inalienable rights. And, yes, we have a long way before we fully live up to those values. It is for this reason precisely that we have to take action when a president is openly violating the oath he took to the Constitution of the United States and the core values we aspire to," Omar said.

Continue Reading

Breaking Banner

Trump tries to change the subject by blaming Obama — then accidentally admits he’s putting kids in ‘cages’

Published

on

President Donald Trump was the target of a Democratic press conference with four Congresswomen of color who were calling him out for racist tweets telling them to go back to their countries.

The women attacked every policy that Trump seems to be losing on. Trump seemed to try and pivot to another issue entirely, blaming former President Barack Obama for building the cages that he's putting children in after he takes them from their parents.

The Obama Administration built the Cages, not the Trump Administration! DEMOCRATS MUST GIVE US THE VOTES TO CHANGE BAD IMMIGRATION LAWS.

Continue Reading
 

CNN

CNN reporter slams Trump with a devastating roundup of his most racist statements

Published

on

On Monday's edition of CNN's "The Situation Room," as fallout continues from President Donald Trump's racist attacks on four progressive black and Hispanic women lawmakers, White House correspondent Jim Acosta showed viewers a supercut of some of the president's most racist behavior in recent years.

"President Trump is doubling down on his racist tweet aimed at four Democratic women of color in Congress," said Acosta. "The president is dumping more fuel on the firestorm he touched off by telling those members of Congress, if they aren't happy in this country, they can leave. President Trump is defending his racist attacks on Twitter, not concerned that his tweets aimed at four women of color in Congress may appeal to white nationalists."

Continue Reading
 
 
 

Copyright © 2019 Raw Story Media, Inc. PO Box 21050, Washington, D.C. 20009 | Masthead | Privacy Policy | For corrections or concerns, please email [email protected]

close-image