Greenland Ice Sheet More Vulnerable To Climate Change Than Previously Thought

[ScienceRocks]

Greenland Ice Sheet more vulnerable to climate change than previously thought

[TBODY] [/TBODY]

A new model developed by researchers at the University of Cambridge has shown that despite its apparent stability, the massive ice sheet covering most of Greenland is more sensitive to climate change than earlier estimates have suggested, which would accelerate the rising sea levels that threaten coastal communities worldwide.

In addition to assessing the impact of the increasing levels of meltwater created and spilled into the ocean each year as the climate continues to warm, the new model also takes into account the role that the soft, spongy ground beneath the ice sheet plays in its changing dynamics. Details are published today (29 September) in the journal Nature Communications.

The Greenland Ice Sheet, which is the second-largest ice sheet in the world, covers 1.7 million square kilometres - an area roughly eight times the size of the United Kingdom - and contains enough ice to raise sea levels by more than seven metres if it were to be lost altogether.

Currently, due to surface melting alone, it is losing ice at a net annual rate of 200 gigatonnes, equating to 0.6 millimetres of sea level rise. A similarly large, but ultimately more uncertain source of sea level rise is tied to a net annual ice loss caused by increased movement of the ice sheet, which results in more ice being discharged into the ocean. Globally, sea levels are rising at three millimetres annually.

Large ice sheets such as in Greenland are far from stationary. Different parts of the ice often move at different speeds, causing ice to shear, a phenomenon known as ice flow.

Greenland Ice Sheet more vulnerable to climate change than previously thought

Not even warming either. Holy shit!

 

[Billy_Bob]

I was wondering when this pile of crap was going to appear..

And Here it is...

In 2008 the ADO went cold and the ice loss subsided. It is now growing again... All i can do is laugh at the shear desperation of the alarmists..

And I forgot... ITS MODELED LOSS its not even real...

 

[Billy_Bob]

And their model is acting 180 degrees out of phase with reality...


Holy Shit... Its fake melting.... That sucking sound is alarmists being sucked in...

 

[SSDD]

Another model based on the same misunderstanding of physics that has resulted in the failure of all the other models...Isn't it about time to go back to the drawing board and work on a new hypothesis that isn't politically based on a hatred for capitalism?

 

[IanC]

hey Matt....why dont you post up the recent paper that actually drilled down under Antarctic Ice Sheets only to find that the reality was significantly different than what the models predicted.

 

[Kosh]

The AGW cult will post whatever they need to in order to uphold their religion.

Certainly there is zero real science being posted by the cult.

 

[westwall]

Greenland Ice Sheet more vulnerable to climate change than previously thought

[TBODY] [/TBODY]

A new model developed by researchers at the University of Cambridge has shown that despite its apparent stability, the massive ice sheet covering most of Greenland is more sensitive to climate change than earlier estimates have suggested, which would accelerate the rising sea levels that threaten coastal communities worldwide.

In addition to assessing the impact of the increasing levels of meltwater created and spilled into the ocean each year as the climate continues to warm, the new model also takes into account the role that the soft, spongy ground beneath the ice sheet plays in its changing dynamics. Details are published today (29 September) in the journal Nature Communications.

The Greenland Ice Sheet, which is the second-largest ice sheet in the world, covers 1.7 million square kilometres - an area roughly eight times the size of the United Kingdom - and contains enough ice to raise sea levels by more than seven metres if it were to be lost altogether.

Currently, due to surface melting alone, it is losing ice at a net annual rate of 200 gigatonnes, equating to 0.6 millimetres of sea level rise. A similarly large, but ultimately more uncertain source of sea level rise is tied to a net annual ice loss caused by increased movement of the ice sheet, which results in more ice being discharged into the ocean. Globally, sea levels are rising at three millimetres annually.

Large ice sheets such as in Greenland are far from stationary. Different parts of the ice often move at different speeds, causing ice to shear, a phenomenon known as ice flow.

Greenland Ice Sheet more vulnerable to climate change than previously thought

Not even warming either. Holy shit!

A new "model". Goody, more science fiction for the faithers to latch onto.

 

[CrusaderFrank]

And planet Earth continues to be the biggest DENIER!!!!!!!!!!!!!!

 

[Old Rocks]

Incredible rate of polar ice loss alarms scientists Environment The Observer


The planet's two largest ice sheets – in Greenland and Antarctica – are now being depleted at an astonishing rate of 120 cubic miles each year. That is the discovery made by scientists using data from CryoSat-2, the European probe that has been measuring the thickness of Earth's ice sheets and glaciers since it was launched by the European Space Agency in 2010.

Even more alarming, the rate of loss of ice from the two regions has more than doubled since 2009, revealing the dramatic impact thatclimate change is beginning to have on our world.

The researchers, based at Germany's Alfred Wegener Institute Helmholtz Centre for Polar and Marine Research – used 200m data points across Antarctica and 14.3m across Greenland, all collected by CryoSat, to study how the ice sheets there had changed over the past three years. The satellite carries a high-precision altimeter, which sends out short radar pulses that bounce off the ice surface and then back to the satellite. By measuring the time this takes, the height of the ice beneath the spacecraft can be calculated.

The Alfred Wegener Institute has a rather good reputation for credibility.

 

[Old Rocks]

Greenland Ice Sheet more vulnerable to climate change than previously thought

[TBODY] [/TBODY]

A new model developed by researchers at the University of Cambridge has shown that despite its apparent stability, the massive ice sheet covering most of Greenland is more sensitive to climate change than earlier estimates have suggested, which would accelerate the rising sea levels that threaten coastal communities worldwide.

In addition to assessing the impact of the increasing levels of meltwater created and spilled into the ocean each year as the climate continues to warm, the new model also takes into account the role that the soft, spongy ground beneath the ice sheet plays in its changing dynamics. Details are published today (29 September) in the journal Nature Communications.

The Greenland Ice Sheet, which is the second-largest ice sheet in the world, covers 1.7 million square kilometres - an area roughly eight times the size of the United Kingdom - and contains enough ice to raise sea levels by more than seven metres if it were to be lost altogether.

Currently, due to surface melting alone, it is losing ice at a net annual rate of 200 gigatonnes, equating to 0.6 millimetres of sea level rise. A similarly large, but ultimately more uncertain source of sea level rise is tied to a net annual ice loss caused by increased movement of the ice sheet, which results in more ice being discharged into the ocean. Globally, sea levels are rising at three millimetres annually.

Large ice sheets such as in Greenland are far from stationary. Different parts of the ice often move at different speeds, causing ice to shear, a phenomenon known as ice flow.

Greenland Ice Sheet more vulnerable to climate change than previously thought

Not even warming either. Holy shit!

A new "model". Goody, more science fiction for the faithers to latch onto.

The cryosat measurements are not models.

 

[BlackFlag]

Don't worry conservative maniacs. Matthew is a gigantic racist. He's on your side. Let him have his weird global warming eccentricities.

 

[Billy_Bob]

The cryosat measurements are not models.

A new model developed by researchers at the University of Cambridge has shown that despite its apparent stability, the massive ice sheet covering most of Greenland is more sensitive to climate change than earlier estimates have suggested,.....

nothing to see here....

 

[skookerasbil]

Notice the phrase that frequently accompanies bomb thrower statements from the AGW climate crusaders these days?

"more than previously thought"

Its always more than previously thought.....just part of the new established narrative.....and all engineered crap!!!

 

[Billy_Bob]

How convenient. Let’s ignore Crater Glacier on Mount
St. Helens, which is not only growing but is now larger
than it was prior to the 1980 eruption that entirely
obliterated it.

How convenient. Let’s ignore the fact that the Nisqually
Glacier on Mount Rainier - the most continuously monitored
glacier in the northern hemisphere - is growing.

How convenient. Let’s ignore the fact that the glaciers
are growing on Washington’s Mount Shuksan.
(See http://www.iceagenow.com/Growing_Glaciers.htm)

How convenient. Let’s limit our discussion to the
continental U.S. That way we can ignore the glaciers
in Alaska that are advancing a third of a mile per year.
(See www.iceagenow.com/Alaskan_Glaciers_Advance_One_Third_Mile.htm)

I think its time to check in on the growing glaciers around the world.

source

 

[westwall]

Greenland Ice Sheet more vulnerable to climate change than previously thought

[TBODY] [/TBODY]

A new model developed by researchers at the University of Cambridge has shown that despite its apparent stability, the massive ice sheet covering most of Greenland is more sensitive to climate change than earlier estimates have suggested, which would accelerate the rising sea levels that threaten coastal communities worldwide.

In addition to assessing the impact of the increasing levels of meltwater created and spilled into the ocean each year as the climate continues to warm, the new model also takes into account the role that the soft, spongy ground beneath the ice sheet plays in its changing dynamics. Details are published today (29 September) in the journal Nature Communications.

The Greenland Ice Sheet, which is the second-largest ice sheet in the world, covers 1.7 million square kilometres - an area roughly eight times the size of the United Kingdom - and contains enough ice to raise sea levels by more than seven metres if it were to be lost altogether.

Currently, due to surface melting alone, it is losing ice at a net annual rate of 200 gigatonnes, equating to 0.6 millimetres of sea level rise. A similarly large, but ultimately more uncertain source of sea level rise is tied to a net annual ice loss caused by increased movement of the ice sheet, which results in more ice being discharged into the ocean. Globally, sea levels are rising at three millimetres annually.

Large ice sheets such as in Greenland are far from stationary. Different parts of the ice often move at different speeds, causing ice to shear, a phenomenon known as ice flow.

Greenland Ice Sheet more vulnerable to climate change than previously thought

Not even warming either. Holy shit!

A new "model". Goody, more science fiction for the faithers to latch onto.

The cryosat measurements are not models.

No, they're not. However they are open to interpretation and massaging. Use one algorithm and you get one result. Use another and you get a different result etc. More importantly it doesn't actually measure "loss". It measures height. Ice flows, and could merely be advancing again which would lower the height of the ice on top of the glaciers. The evidence of increased sea ice around Antarctica actually supports that supposition. It's not melting, it's merely moving elsewhere.

 

[Crick]

Where do all things on continents that flow in response to gravity end up? Think about this REAL hard.

 

[Mustang]

Greenland Ice Sheet more vulnerable to climate change than previously thought

[TBODY] [/TBODY]

A new model developed by researchers at the University of Cambridge has shown that despite its apparent stability, the massive ice sheet covering most of Greenland is more sensitive to climate change than earlier estimates have suggested, which would accelerate the rising sea levels that threaten coastal communities worldwide.

In addition to assessing the impact of the increasing levels of meltwater created and spilled into the ocean each year as the climate continues to warm, the new model also takes into account the role that the soft, spongy ground beneath the ice sheet plays in its changing dynamics. Details are published today (29 September) in the journal Nature Communications.

The Greenland Ice Sheet, which is the second-largest ice sheet in the world, covers 1.7 million square kilometres - an area roughly eight times the size of the United Kingdom - and contains enough ice to raise sea levels by more than seven metres if it were to be lost altogether.

Currently, due to surface melting alone, it is losing ice at a net annual rate of 200 gigatonnes, equating to 0.6 millimetres of sea level rise. A similarly large, but ultimately more uncertain source of sea level rise is tied to a net annual ice loss caused by increased movement of the ice sheet, which results in more ice being discharged into the ocean. Globally, sea levels are rising at three millimetres annually.

Large ice sheets such as in Greenland are far from stationary. Different parts of the ice often move at different speeds, causing ice to shear, a phenomenon known as ice flow.

Greenland Ice Sheet more vulnerable to climate change than previously thought

Not even warming either. Holy shit!

A few years ago I watched a documentary about some of the people investigating ice sheets. I think they were in the northern hemisphere. At any rate, a group of them were camped near a relatively newly-formed fairly large lake on the ice. Then one night, they heard a roar that brought them all awake. They weren't sure what it was, but with no other humans within hundreds of miles, and no animal life, and no place to go for shelter, they were pretty shaken up.

Sometime after first light, they walked to the lake to find all the water drained. Apparently, there were holes in the bottom of the lake that must have led all the way to the bottom of the ice sheet, and along with a recently completed air vent of some kind, the water completely drained out overnight. I don't think most scientists had foreseen that as a possibility. What was worse is they now knew that the ice sheet was melting from underneath as well with the addition of the warmer water. It would also act as a lubricant to assist in any movement of the ice sheet.

This is one of the reasons it's important to keep studying what's happening. Unfortunately, it seems like all the news is bad news when it comes to the speed of the melt and the processes around melting.

NOVA Extreme Ice

 

[Mustang]

http://www.pbs.org/wgbh/nova/earth/extreme-ice.html

 

[Mustang]

I might as well add Nova's Secrets Beneath the Ice even though it's about the Antarctic and this thread is about Greenland.

Video Secrets Beneath the Ice Watch NOVA Online PBS Video