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Post by graywolf on Feb 24, 2015 10:43:11 GMT
Looks like another warm outbreak into the basin over the coming days ( from both our side and the Pacific). This will not help extent/area to make up any ground ( though baffin should be putting on ice still?).
Was watching Alley having one of his maniacal lectures last night!, i do like the guy, both his 'style' and his take on things? He appeared a bit concerned about the rapid loss of land ice via loss of ice shelfs/glaciers so the Jakobshavn calve will have him paying attention? Jason box seems to think that the space made by the calve will rapidly fill in as the glacier now accelerates ( in winter!) due to the reduction in friction now that big chunk has gone? He also expects thinning and rapid retreat so we may see the ocean make it over the lip and into the basin beyond over the coming summers? Should this occur then expect to see some frightening stats coming from there as the glacier rapidly retreats and the land ice accelerates into the new Fjord?
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Post by nautonnier on Feb 24, 2015 11:36:10 GMT
Looks like another warm outbreak into the basin over the coming days ( from both our side and the Pacific). This will not help extent/area to make up any ground ( though baffin should be putting on ice still?). Was watching Alley having one of his maniacal lectures last night!, i do like the guy, both his 'style' and his take on things? He appeared a bit concerned about the rapid loss of land ice via loss of ice shelfs/glaciers so the Jakobshavn calve will have him paying attention? Jason box seems to think that the space made by the calve will rapidly fill in as the glacier now accelerates ( in winter!) due to the reduction in friction now that big chunk has gone? He also expects thinning and rapid retreat so we may see the ocean make it over the lip and into the basin beyond over the coming summers? Should this occur then expect to see some frightening stats coming from there as the glacier rapidly retreats and the land ice accelerates into the new Fjord? People who talk about "rapid loss" as if Greenland or the Antarctic are going to melt away have zero grasp of the size of the ice there and less grasp of the size of the planet. The Greenland ice sheet was in existence throughout the Eemian which was significantly warmer than the Holocene has ever been.
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Post by sigurdur on Feb 24, 2015 14:06:39 GMT
Looks like another warm outbreak into the basin over the coming days ( from both our side and the Pacific). This will not help extent/area to make up any ground ( though baffin should be putting on ice still?). Was watching Alley having one of his maniacal lectures last night!, i do like the guy, both his 'style' and his take on things? He appeared a bit concerned about the rapid loss of land ice via loss of ice shelfs/glaciers so the Jakobshavn calve will have him paying attention? Jason box seems to think that the space made by the calve will rapidly fill in as the glacier now accelerates ( in winter!) due to the reduction in friction now that big chunk has gone? He also expects thinning and rapid retreat so we may see the ocean make it over the lip and into the basin beyond over the coming summers? Should this occur then expect to see some frightening stats coming from there as the glacier rapidly retreats and the land ice accelerates into the new Fjord? People who talk about "rapid loss" as if Greenland or the Antarctic are going to melt away have zero grasp of the size of the ice there and less grasp of the size of the planet. The Greenland ice sheet was in existence throughout the Eemian which was significantly warmer than the Holocene has ever been. Nautonnier: Most of the Greenland ice sheet melted during the Eemian. The ice in the current ice sheet is as old as 110,000 years.[3 The 3 is a reference to Alley 2000 ice core. Reason Greenland Ice cores only show climate back aprox 110-120 years before present is there is no more ice to core. They are trying some new idea, lipping it or such, to infer older conditions.
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Post by sigurdur on Feb 24, 2015 14:42:57 GMT
Looks like another warm outbreak into the basin over the coming days ( from both our side and the Pacific). This will not help extent/area to make up any ground ( though baffin should be putting on ice still?). Was watching Alley having one of his maniacal lectures last night!, i do like the guy, both his 'style' and his take on things? He appeared a bit concerned about the rapid loss of land ice via loss of ice shelfs/glaciers so the Jakobshavn calve will have him paying attention? Jason box seems to think that the space made by the calve will rapidly fill in as the glacier now accelerates ( in winter!) due to the reduction in friction now that big chunk has gone? He also expects thinning and rapid retreat so we may see the ocean make it over the lip and into the basin beyond over the coming summers? Should this occur then expect to see some frightening stats coming from there as the glacier rapidly retreats and the land ice accelerates into the new Fjord? Graywolf: IF ice sheet loss doubled, how many millennium would it take to melt Greenland's ice to Eemian levels?
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Post by sigurdur on Feb 24, 2015 15:02:39 GMT
www.scienceworldreport.com/articles/22624/20150223/past-greenland-ice-sheet-melting-reveal-future-sea-level-rise.htmPast Greenland Ice Sheet Melting May Reveal Future Sea-Level Rise 0 comments Text Size - + Print E-mail Catherine Griffin First Posted: Feb 23, 2015 07:51 AM EST Greenland Ice Sheet Greenland is melting, so what does this mean for the future? In order to find out, a team of scientists looked to the past and quantified how the Greenland Ice Sheet reacted to a warm period that occurred 8,000 to 5,000 years ago. (Photo : Reuters) Greenland is melting, so what does this mean for the future? In order to find out, a team of scientists looked to the past and quantified how the Greenland Ice Sheet reacted to a warm period that occurred 8,000 to 5,000 years ago.
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Post by douglavers on Feb 25, 2015 8:55:18 GMT
I keep reading articles about the Greenland Ice Sheet melting.
Being simplistic, I have a bit of a problem imagining how much melting can really occur on a vast deep frozen plateau mostly over 1000 metres in altitude. Its probably below, or vastly below, freezing for 9 months of the year. Snow accumulation each year must be large.
Some planes which crashed during the Second World War were eventually found under about 100 metres of ice. Does'nt sound like a melting environment!
Surely there are some satellite altimetry measurements which someone has graphed?
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Post by sigurdur on Feb 25, 2015 12:31:48 GMT
There is Doug. Satellite as well. At the present rate melt it will take several thousand years melt.
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Post by sigurdur on Feb 25, 2015 12:33:41 GMT
In fact, melt rate doubled, it would still take several thousand years melt.
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Post by acidohm on Feb 25, 2015 18:04:50 GMT
Won his Nobel alongside the IPCC......
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Post by sigurdur on Feb 25, 2015 18:17:48 GMT
Not surprising is it? Near the end of interglacials, the temperature spikes rapidly. We are long in the tooth on this one, unless it is truly a MIS-11 mimic. Even in MIS-11, resolution issues not withstanding, there was a bump near this time frame in temps. Leveled for awhile, then fell a bit again. Interesting times, as always we live in. Code will have to move to New England to ski as well.
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Post by walnut on Feb 25, 2015 18:20:28 GMT
Total polar ice extent near historic high levels.
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Post by walnut on Feb 25, 2015 19:06:04 GMT
There is an old Annenberg media documentary about climate change on a local college channel right now. It is from about 1980. Something I would have taken at face value back then. never questioned things like that. Now I am cynical about the whole scam, and this relatively ancient documentary has a sinister spookiness to it. I think I recognize the narrator as the same voice from an old 'Bigfoot' documentary from the 70's.
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Post by nonentropic on Feb 25, 2015 19:28:47 GMT
So if the arctic temps are rising 4 times faster than the aggregate of the rest of the planet and they are barely rising, four times B all is just about the same.
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Post by sigurdur on Feb 25, 2015 21:15:55 GMT
nonentropic: You are suppose to be shaking in your boots. After all, this has NEVER happened before during this interglacial has it?
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Post by neilhamp on Feb 26, 2015 7:45:56 GMT
Artic temperatures rose just as quickly from 1915 to 1935 Levels of CO2 well below 300ppm back then
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