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The melting of Antarctica was already really bad. It just got worse

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http://www.chicagotribune.com/news/nationworld/chi-antarctica-ice-melting-20150316-story.html

The melting of Antarctica was already really bad. It just got worse
From the ground in this extreme northern part of Antarctica, spectacularly white and blinding ice seems to extend forever. What can't be seen is the battle raging underfoot to re-shape Earth. Water is eating away at the Antarctic ice. (Associated Press)
The melting of Antarctica was already really bad. It just got worse.

A hundred years from now, humans may remember 2014 as the year that we first learned that we may have irreversibly destabilized the great ice sheet of West Antarctica, and thus set in motion more than 10 feet of sea level rise.

Meanwhile, 2015 could be the year of the double whammy — when we learned the same about one gigantic glacier of East Antarctica, which could set in motion roughly the same amount all over again. Northern Hemisphere residents and Americans in particular should take note — when the bottom of the world loses vast amounts of ice, those of us living closer to its top get more sea level rise than the rest of the planet, thanks to the law of gravity.

The findings about East Antarctica emerge from a new paper just out in Nature Geoscience by an international team of scientists representing the United States, Britain, France and Australia. They flew a number of research flights over the Totten Glacier of East Antarctica — the fastest-thinning sector of the world's largest ice sheet — and took a variety of measurements to try to figure out the reasons behind its retreat. And the news wasn't good: It appears that Totten, too, is losing ice because warm ocean water is getting underneath it.

"The idea of warm ocean water eroding the ice in West Antarctica, what we're finding is that may well be applicable in East Antarctica as well," says Martin Siegert, a co-author of the study and who is based at the Grantham Institute at Imperial College London.

The Totten Glacier covers an area of 40 miles by 18 miles. It it is losing an amount of ice "equivalent to 100 times the volume of Sydney Harbour every year," notes the Australian Antarctic Division.

That's alarming, because the glacier holds back a much more vast catchment of ice that, were its vulnerable parts to flow into the ocean, could produce a sea level rise of more than 11 feet — which is comparable to the impact from a loss of the West Antarctica ice sheet. And that's "a conservative lower limit," says lead study author Jamin Greenbaum, a PhD candidate at the University of Texas at Austin.

In its alignment with the land and the sea, the Totten Glacier is similar to the West Antarctic glaciers, which also feature ice shelves that slope out from the vast sheet of ice on land and extend into the water. These ice shelves are a key source of instability, because if ocean waters beneath them warm, they can lose ice rapidly, allowing the ice sheet behind them to flow more quickly into the sea.

The researchers used three separate types of measurements taken during their flights — gravitational measurements, radar and laser altimetry — to get a glimpse of what might be happening beneath the massive glacier, whose ice shelves are more than 1,600 feet thick in places. Using radar, they could measure the ice's thickness. Meanwhile, by measuring the pull of the Earth's gravity on the airplane in different places, the scientists were able to determine just how far below that ice the seafloor was.

The result was the discovery of two undersea troughs or valleys beneath the ice shelf — regions where the seafloor slopes downward, allowing a greater depth of water beneath the floating ice. These cavities or subsea valleys, the researchers suggest, may explain the glacier's retreat — they could allow warmer deep waters to get underneath the ice shelf, accelerating its melting.

In this particular area of Antarctica, Greenbaum says, a warmer layer of ocean water offshore is actually deeper than the colder layers above it, because of the saltwater content of the warm water (which increases its density). And the canyons may allow that warm water access to the glacier base. "What we found here is that there are seafloor valleys deeper than the depth of the maximum temperature measured near the glacier," Greenbaum says.

One of these canyons is three miles wide, in a region that was previously believed to simply hold ice lying atop solid earth. On the contrary, the new study suggests the ice is instead afloat.

The availability of warm water, and the observed melting, notes the study, "support the idea that the behaviour of Totten Glacier is an East Antarctic analogue to ocean-driven retreat underway in the West Antarctic Ice Sheet (WAIS). The global sea level potential of 3.5 m flowing through Totten Glacier alone is of similar magnitude to the entire probable contribution of the WAIS."

One limitation of the study is that the scientists were not able to directly measure the temperature of ocean water that is reaching the glacier itself. While this could be done with robotic underwater vehicles or other methods, that wasn't part of the study at this time. Thus, the conclusions are more focused on inferring the vulnerability of the glacier based on a number of different pieces of evidence — topped off by the fact that the glacier is, indeed, retreating.

For residents of the United States — and indeed, the entire Northern Hemisphere — the impact could be more dire. If Antarctica loses volumes of ice that would translate into major contributions to sea level rise, that rise would not be distributed evenly around the globe. The reason is the force of gravity. Antarctica is so massive that it pulls the ocean toward it, but if it loses ice, that gravitational pull will relax, and the ocean will slosh back toward the Northern Hemisphere — which will experience additional sea level rise.

For the United States, the amount of sea level rise could be 25 percent or more than the global average.

Much as with the ocean-abutting glaciers of West Antarctica, just because a retreat has been observed — and because the entirety of the region implies a sea level rise of 11 or more feet were all ice to end up in the ocean — does not mean that we'll see anything near that much sea level rise in our lifetimes. These processes generally are expected to play out over hundreds of years or more. They would reshape the face of the Earth — but we may never see it.

The problem, then, is more the world we're leaving to our children and grandchildren — because once such a gigantic geophysical process begins, it's hard to see how it comes to a halt. "With warming oceans, it's difficult to see how a process that starts now would be reversed, or reversible, in a warming world," Siegert says.

Washington Post

The melting of Antarctica was already really bad. It just got worse.

A hundred years from now, humans may remember 2014 as the year that we first learned that we may have irreversibly destabilized the great ice sheet of West Antarctica, and thus set in motion more than 10 feet of sea level rise.

Meanwhile, 2015 could be the year of the double whammy — when we learned the same about one gigantic glacier of East Antarctica, which could set in motion roughly the same amount all over again. Northern Hemisphere residents and Americans in particular should take note — when the bottom of the world loses vast amounts of ice, those of us living closer to its top get more sea level rise than the rest of the planet, thanks to the law of gravity.

The findings about East Antarctica emerge from a new paper just out in Nature Geoscience by an international team of scientists representing the United States, Britain, France and Australia. They flew a number of research flights over the Totten Glacier of East Antarctica — the fastest-thinning sector of the world's largest ice sheet — and took a variety of measurements to try to figure out the reasons behind its retreat. And the news wasn't good: It appears that Totten, too, is losing ice because warm ocean water is getting underneath it.

"The idea of warm ocean water eroding the ice in West Antarctica, what we're finding is that may well be applicable in East Antarctica as well," says Martin Siegert, a co-author of the study and who is based at the Grantham Institute at Imperial College London.

The Totten Glacier covers an area of 40 miles by 18 miles. It it is losing an amount of ice "equivalent to 100 times the volume of Sydney Harbour every year," notes the Australian Antarctic Division.

That's alarming, because the glacier holds back a much more vast catchment of ice that, were its vulnerable parts to flow into the ocean, could produce a sea level rise of more than 11 feet — which is comparable to the impact from a loss of the West Antarctica ice sheet. And that's "a conservative lower limit," says lead study author Jamin Greenbaum, a PhD candidate at the University of Texas at Austin.

In its alignment with the land and the sea, the Totten Glacier is similar to the West Antarctic glaciers, which also feature ice shelves that slope out from the vast sheet of ice on land and extend into the water. These ice shelves are a key source of instability, because if ocean waters beneath them warm, they can lose ice rapidly, allowing the ice sheet behind them to flow more quickly into the sea.

The researchers used three separate types of measurements taken during their flights — gravitational measurements, radar and laser altimetry — to get a glimpse of what might be happening beneath the massive glacier, whose ice shelves are more than 1,600 feet thick in places. Using radar, they could measure the ice's thickness. Meanwhile, by measuring the pull of the Earth's gravity on the airplane in different places, the scientists were able to determine just how far below that ice the seafloor was.

The result was the discovery of two undersea troughs or valleys beneath the ice shelf — regions where the seafloor slopes downward, allowing a greater depth of water beneath the floating ice. These cavities or subsea valleys, the researchers suggest, may explain the glacier's retreat — they could allow warmer deep waters to get underneath the ice shelf, accelerating its melting.

In this particular area of Antarctica, Greenbaum says, a warmer layer of ocean water offshore is actually deeper than the colder layers above it, because of the saltwater content of the warm water (which increases its density). And the canyons may allow that warm water access to the glacier base. "What we found here is that there are seafloor valleys deeper than the depth of the maximum temperature measured near the glacier," Greenbaum says.

One of these canyons is three miles wide, in a region that was previously believed to simply hold ice lying atop solid earth. On the contrary, the new study suggests the ice is instead afloat.

The availability of warm water, and the observed melting, notes the study, "support the idea that the behaviour of Totten Glacier is an East Antarctic analogue to ocean-driven retreat underway in the West Antarctic Ice Sheet (WAIS). The global sea level potential of 3.5 m flowing through Totten Glacier alone is of similar magnitude to the entire probable contribution of the WAIS."

One limitation of the study is that the scientists were not able to directly measure the temperature of ocean water that is reaching the glacier itself. While this could be done with robotic underwater vehicles or other methods, that wasn't part of the study at this time. Thus, the conclusions are more focused on inferring the vulnerability of the glacier based on a number of different pieces of evidence — topped off by the fact that the glacier is, indeed, retreating.

For residents of the United States — and indeed, the entire Northern Hemisphere — the impact could be more dire. If Antarctica loses volumes of ice that would translate into major contributions to sea level rise, that rise would not be distributed evenly around the globe. The reason is the force of gravity. Antarctica is so massive that it pulls the ocean toward it, but if it loses ice, that gravitational pull will relax, and the ocean will slosh back toward the Northern Hemisphere — which will experience additional sea level rise.

For the United States, the amount of sea level rise could be 25 percent or more than the global average.

Much as with the ocean-abutting glaciers of West Antarctica, just because a retreat has been observed — and because the entirety of the region implies a sea level rise of 11 or more feet were all ice to end up in the ocean — does not mean that we'll see anything near that much sea level rise in our lifetimes. These processes generally are expected to play out over hundreds of years or more. They would reshape the face of the Earth — but we may never see it.

The problem, then, is more the world we're leaving to our children and grandchildren — because once such a gigantic geophysical process begins, it's hard to see how it comes to a halt. "With warming oceans, it's difficult to see how a process that starts now would be reversed, or reversible, in a warming world," Siegert says.

Washington Post

By Chris MooneyWashington Post

The content available on a site dedicated to bringing folks to America should not be promoting racial discord, euro-supremacy, discrimination based on religion , exclusion of groups from immigration based on where they were born, disenfranchisement of voters rights based on how they might vote.

horsey-change.jpg?w=336&h=265

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The way I see it, it will wipe out all the old capitalist established equity in beach front towns, and establish new ocean front land that common people could own.

This is a liberal win win.

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(Weird, the climate has been changing for billions of years. Before lefties were around to tax carbon dioxide)

Today’s Antarctic region once as hot as California, Florida

Edited by Hilarious Clinton

"The fact that we are here today to debate raising America’s debt limit is a sign of leadership failure. It is a sign that the U.S. Government can’t pay its own bills. It is a sign that we now depend on ongoing financial assistance from foreign countries to finance our Government’s reckless fiscal policies."

Senator Barack Obama
Senate Floor Speech on Public Debt
March 16, 2006



barack-cowboy-hat.jpg
90f.JPG

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We are going to die!!! Florida is going to be underwater soon!!!

Buy your carbon credits, buy them now before it is to late. We are all going to die, our children will die and our children's children will die!!!!

The end is near. The only way to save ourselves is to join the Religion of Man Made Global Warming. (luckily some vj people are members. Ask them for guidance)

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(Weird, the climate has been changing for billions of years. Before lefties were around to tax carbon dioxide)

Today’s Antarctic region once as hot as California, Florida

Does the study say how many people lived in cities at low lying elevations during the Eocene?


QCjgyJZ.jpg

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ted cruz is much better with the climate change lol's than yous guys..

Texas Senator Ted Cruz declared on "Late Night with Seth Meyers" that science doesn't support the "alarmists on global warming."

Cruz extinguished any hope that a recent comment, "the whole world's on fire" — which he told a three-year-old while speaking Sunday in New Hampshire — had a basis in climate science.

Host Seth Meyers took the opportunity to mock Cruz's climate change denial.

"First, I got excited, because I thought maybe you were coming around on global warming, but that's not the case, right?" Meyers said. "Because I think the world's on fire, literally — hottest year on record — but you're not there, right?"

No, Cruz isn't...

https://news.vice.com/article/watch-a-weeks-worth-of-senator-ted-cruz-denying-climate-change

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This scam again. Strange how I have just read that the ice sheets are getting larger and not less. Nice try but this scam is old already and has been debunked years ago. smh

Yes science, what a scam...not like the Oil and Gas PR machine..patriots and true visionaries


The content available on a site dedicated to bringing folks to America should not be promoting racial discord, euro-supremacy, discrimination based on religion , exclusion of groups from immigration based on where they were born, disenfranchisement of voters rights based on how they might vote.

horsey-change.jpg?w=336&h=265

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Friend of Pres. Obama buys Magnum P.I. home in Hawaii

HONOLULU— A sprawling beachfront home used in the filming of the 1980s television show “Magnum, P.I.” has been sold for $8.7 million.

An attorney for President Barack Obama’s close friend Marty Nesbitt said Thursday that his client bought the property. Seth Madorsky says Nesbitt didn’t have any partners or co-investors in the deal.

The 3-acre property is in Waimanalo, next to the town of Kailua where the Obama family has spent the winter holidays in recent years.

http://fox4kc.com/2015/03/20/friend-of-pres-obama-buys-magnum-p-i-home-in-hawaii/

Guess he did not get the message


If more citizens were armed, criminals would think twice about attacking them, Detroit Police Chief James Craig

Florida currently has more concealed-carry permit holders than any other state, with 1,269,021 issued as of May 14, 2014

The liberal elite ... know that the people simply cannot be trusted; that they are incapable of just and fair self-government; that left to their own devices, their society will be racist, sexist, homophobic, and inequitable -- and the liberal elite know how to fix things. They are going to help us live the good and just life, even if they have to lie to us and force us to do it. And they detest those who stand in their way."
- A Nation Of Cowards, by Jeffrey R. Snyder

Tavis Smiley: 'Black People Will Have Lost Ground in Every Single Economic Indicator' Under Obama

white-privilege.jpg?resize=318%2C318

Democrats>Socialists>Communists - Same goals, different speeds.

#DeplorableLivesMatter

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Statement by Dr. Willie Soon

screen-shot-2015-02-22-at-11-17-18-am-32Via Heartland press release:

Dr. Willie Soon of the Harvard-Smithsonian Center for Astrophysics released the following statement through The Heartland Institute in response to repeated attacks on his character and scientific integrity.

All media inquires should be directed to Heartland Institute Director of Communications Jim Lakely at jlakely@heartland.org, 312/377-4000 or (cell) 312/731-9364. For more information about Dr. Willie Soon see this page: Heartland.org/willie-soon. To see a previous statement about Willie Soon by Heartland Institute President Joseph Bast, click here.

“In recent weeks I have been the target of attacks in the press by various radical environmental and politically motivated groups. This effort should be seen for what it is: a shameless attempt to silence my scientific research and writings, and to make an example out of me as a warning to any other researcher who may dare question in the slightest their fervently held orthodoxy of anthropogenic global warming.

“I am saddened and appalled by this effort, not only because of the personal hurt it causes me and my family and friends, but also because of the damage it does to the integrity of the scientific process. I am willing to debate the substance of my research and competing views of climate change with anyone, anytime, anywhere. It is a shame that those who disagree with me resolutely decline all public debate and stoop instead to underhanded and unscientific ad hominem tactics.

“Let me be clear. I have never been motivated by financial gain to write any scientific paper, nor have I ever hidden grants or any other alleged conflict of interest. I have been a solar and stellar physicist at the Harvard-Smithsonian Center for Astrophysics for a quarter of a century, during which time I have published numerous peer-reviewed, scholarly articles. The fact that my research has been supported in part by donations to the Smithsonian Institution from many sources, including some energy producers, has long been a matter of public record. In submitting my academic writings I have always complied with what I understood to be disclosure practices in my field generally, consistent with the level of disclosure made by many of my Smithsonian colleagues.

“If the standards for disclosure are to change, then let them change evenly. If a journal that has peer-reviewed and published my work concludes that additional disclosures are appropriate, I am happy to comply. I would ask only that other authors-on all sides of the debate-are also required to make similar disclosures. And I call on the media outlets that have so quickly repeated my attackers’ accusations to similarly look into the motivations of and disclosures that may or may not have been made by their preferred, IPCC-linked scientists.

“I regret deeply that the attacks on me now appear to have spilled over onto other scientists who have dared to question the degree to which human activities might be causing dangerous global warming, a topic that ought rightly be the subject of rigorous open debate, not personal attack. I similarly regret the terrible message this pillorying sends young researchers about the costs of questioning widely accepted “truths.”

“Finally, I thank all my many colleagues and friends who have bravely objected to this smear campaign on my behalf and I challenge all parties involved to focus on real scientific issues for the betterment of humanity.

Dr. Wei-Hock “Willie” Soon

Harvard-Smithsonian Center for Astrophysics

No room for debate with liberals .


If more citizens were armed, criminals would think twice about attacking them, Detroit Police Chief James Craig

Florida currently has more concealed-carry permit holders than any other state, with 1,269,021 issued as of May 14, 2014

The liberal elite ... know that the people simply cannot be trusted; that they are incapable of just and fair self-government; that left to their own devices, their society will be racist, sexist, homophobic, and inequitable -- and the liberal elite know how to fix things. They are going to help us live the good and just life, even if they have to lie to us and force us to do it. And they detest those who stand in their way."
- A Nation Of Cowards, by Jeffrey R. Snyder

Tavis Smiley: 'Black People Will Have Lost Ground in Every Single Economic Indicator' Under Obama

white-privilege.jpg?resize=318%2C318

Democrats>Socialists>Communists - Same goals, different speeds.

#DeplorableLivesMatter

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