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Title: 800,000 Years of Abrupt Climate Variability: Earth's Climate Is Capable of Very Rapid Transitions
Source:
Science Daily
URL Source: http://www.sciencedaily.com/releases/2011/09/110908145109.htm
Published: Sep 9, 2011
Author: Science Daily
Post Date: 2011-09-09 16:16:38 by jwpegler
Keywords: None
Views: 9600
Comments: 16
An international team of scientists, led by Dr Stephen Barker of Cardiff University, has produced a prediction of what climate records from Greenland might look like over the last 800,000 years.
Drill cores taken from Greenland's vast ice sheets provided the first clue that Earth's climate is capable of very rapid transitions and have led to vigorous scientific investigation into the possible causes of abrupt climate change.
Such evidence comes from the accumulation of layers of ancient snow, which compact to form the ice-sheets we see today. Each layer of ice can reveal past temperatures and even evidence for the timing and magnitude of distant storms or volcanic eruptions. By drilling cores in the ice scientists have reconstructed an incredible record of past climates. Until now such temperature records from Greenland have covered only the last 100,000 years or so.
The team's reconstruction is based on the much longer ice core temperature record retrieved from Antarctica and uses a mathematical formulation to extend the Greenland record beyond its current limit.
Dr Barker, Cardiff School of Earth and Ocean Sciences said: "Our approach is based on an earlier suggestion that the record of Antarctic temperature variability could be derived from the Greenland record.
"However, we turned this idea on its head to derive a much longer record for Greenland using the available records from Antarctica."
The research published in the journal Science (Sept. 8) demonstrates that abrupt climate change has been a systemic feature of Earth's climate for hundreds of thousands of years and may play an active role in longer term climate variability through its influence on ice age terminations.
Dr Barker added: "It is intriguing to get an insight into what abrupt climate variability may have looked like before the Greenland records begin. We now have to wait until longer Greenland records are produced so that we can see how successful our prediction is."
The new predictions provide an extended testing bed for the climate models that are used to predict future climate variability.
The collaborative research was funded in part by a Leverhulme Trust Philip Leverhulme Prize awarded to Dr Barker at Cardiff University. The prize recognises the achievement and potential of outstanding researchers at an early stage in their careers but who have already acquired an international reputation for their work. The Natural Environment Research Council and National Science Foundation in the United States also funded the research.
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#1. To: All, go65 (#0) (Edited)
I love real science.
Anything that the government does today to help us can and will be used in the future to hurt us -- jwpegler
#2. To: jwpegler (#0)
The research published in the journal Science (Sept. 8) demonstrates that abrupt climate change has been a systemic feature of Earth's climate for hundreds of thousands of years and may play an active role in longer term climate variability through its influence on ice age terminations.
Another aspect to this is that such change was not brought on by a static reason but many.
America...My Kind Of Place...
"I truly am not that concerned about [bin Laden]..."
--GW Bush
"THE MILITIA IS COMING!!! THE MILITIA IS COMING!!!"
--Sarah Palin's version of "The Midnight Ride of Paul revere"
I lurk to see if someone other than Myst or Pookie posts anything...
#3. To: jwpegler (#1)
(chuckle)
Excellent.
Proxy IP's are amusing.....lmao
#4. To: Badeye (#3)
What did that article actually "say", Boofer?
America...My Kind Of Place...
"I truly am not that concerned about [bin Laden]..."
--GW Bush
"THE MILITIA IS COMING!!! THE MILITIA IS COMING!!!"
--Sarah Palin's version of "The Midnight Ride of Paul revere"
I lurk to see if someone other than Myst or Pookie posts anything...
#5. To: jwpegler (#0)
Drill cores taken from Greenland's vast ice sheets provided the first clue that Earth's climate is capable of very rapid transitions and have led to vigorous scientific investigation into the possible causes of abrupt climate change.
According to our local watermelon-environMENTALists, it's all about the evils of SUVs....
Suburbans, Ford Excursions, et al.
To:Skippy, toe-jam, old man Fred Alzheimers Mertz, _jim, loonymom/ming, e-type-jackoff, goober56, Wrek, calcon, dummy DwarF, continental op, Biff, gobsheit and meguro From: Capitalist Eric Message: You're SOCIALIST morons. ESAD. 
#6. To: Capitalist Eric (#5) (Edited)
According to our local watermelon-environMENTALists, it's all about the evils of SUVs....Suburbans, Ford Excursions, et al.
Of course, can you image how big the SUVs that the Dinosaurs drove were? They must have been Gargantuan! No wonder why they are extinct.
Anything that the government does today to help us can and will be used in the future to hurt us -- jwpegler
#7. To: jwpegler (#0)
The research published in the journal Science (Sept. 8) demonstrates that abrupt climate change has been a systemic feature of Earth's climate for hundreds of thousands of years and may play an active role in longer term climate variability through its influence on ice age terminations.
abrupt climate change in past records ranges from a few hundred to a few thousand year. For example the Younger Dryas event took 700 years.
The change we're seeing over the last 30-40 is unprecedented. BTW, there are some who believe that the rapidly rising global temps could trigger a shutdown in the Atlantic thermohaline cycle.
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#8. To: go65, jwpegler, Capitalist Eric, A K A Stone (#7)
The change we're seeing over the last 30-40 is unprecedented. BTW, there are some who believe that the rapidly rising global temps could trigger a shutdown in the Atlantic thermohaline cycle.
With the economy still in the dumper -- maybe permanently? -- and full-time jobs becoming as scarce as rain during a drought, huge percentages of Americans have had their (misplaced) faith in the American dream shaken, the upper-middle-class consumerist lifestyle is exposed as a mirage for anybody who plays by the rules. Capitalism and the America that embraced it as a way of life is now and forever more a failure. It does me good to know that the generation that voted in Reagan and his ideology will see their America die from that ideology before their very own eyes and knowing they had a hand in its destruction.
#9. To: Godwinson (#8)
Science by itself can't prove anything about the age of the earth. It has to assume something.
#10. To: A K A Stone (#9)
Science by itself can't prove anything
Science is all about the proof.
With the economy still in the dumper -- maybe permanently? -- and full-time jobs becoming as scarce as rain during a drought, huge percentages of Americans have had their (misplaced) faith in the American dream shaken, the upper-middle-class consumerist lifestyle is exposed as a mirage for anybody who plays by the rules. Capitalism and the America that embraced it as a way of life is now and forever more a failure. It does me good to know that the generation that voted in Reagan and his ideology will see their America die from that ideology before their very own eyes and knowing they had a hand in its destruction.
#11. To: Godwinson (#10)
Science is all about the proof.
Which is why evolution and the theory that the earth is billions of years old isn't science at all. It is circular reasoning. It is assumption piled on assumptions to make more assumptions.
#12. To: A K A Stone (#11)
Which is why evolution and the theory that the earth is billions of years old isn't science at all.
This is why the GOP should not be allowed anywhere near the seats of power.
With the economy still in the dumper -- maybe permanently? -- and full-time jobs becoming as scarce as rain during a drought, huge percentages of Americans have had their (misplaced) faith in the American dream shaken, the upper-middle-class consumerist lifestyle is exposed as a mirage for anybody who plays by the rules. Capitalism and the America that embraced it as a way of life is now and forever more a failure. It does me good to know that the generation that voted in Reagan and his ideology will see their America die from that ideology before their very own eyes and knowing they had a hand in its destruction.
#13. To: Godwinson (#12)
If you believe your evolution nonsense. Then it is all the reason to you know, to put your beliefs into practice. Go buy some bananas and fuck a monkey. See if it gets you pregnant.
#14. To: A K A Stone (#13)
Like I said, people like you join and or vote for the GOP and thus make you a danger to the Republic and your party should not be voted into power.
With the economy still in the dumper -- maybe permanently? -- and full-time jobs becoming as scarce as rain during a drought, huge percentages of Americans have had their (misplaced) faith in the American dream shaken, the upper-middle-class consumerist lifestyle is exposed as a mirage for anybody who plays by the rules. Capitalism and the America that embraced it as a way of life is now and forever more a failure. It does me good to know that the generation that voted in Reagan and his ideology will see their America die from that ideology before their very own eyes and knowing they had a hand in its destruction.
#15. To: jwpegler (#1)
I love real science.
Somewhat like a horror story isn't it?
#16. To: go65 (#7) (Edited)
The change we're seeing over the last 30-40 is unprecedented.
You keep repeating that, yet there isn't any evidence to support it.
I was born March, 27 1959.
While I was growing up in Michigan, my birthday saw summer-like weather, 2 feet of snow, and something in between.
Short term variations don't equate to long term cycles.
There is no evidence that humans are causing either the short term variations or the long term cycles.
Anything that the government does today to help us can and will be used in the future to hurt us -- jwpegler
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