Posted on 07/25/2012 5:39:15 PM PDT by Ernest_at_the_Beach
The paper states its claims by suggesting other ice-core-based assessments of the correlation between CO2 prevalence and global temperature use samples from a region of Antarctica where ice accumulates slowly, making conclusions on the age of air bubbles difficult. This new research uses several ice core samples from several locations in Antarctica and Greenland, compares the results to what the researchers feel is a robust model of Antarctic climate, carries the three* and produces a result that the authors feel offers a more comprehensive assessment of just what happens during those moments in time with lots of CO2 makes it into the atmosphere.
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Their conclusion is that when the CO2 arrives, things change – fast – as southern climates respond to events in the northern hemisphere and vice-versa.
As the paper states:
“... we show that the increase in CO2 likely lagged the increase in regional Antarctic temperature by less than 400 yr and that even a short lead of CO2 over temperature cannot be excluded.”
The paper appears far, therefore, from a smoking gun for those who would say CO2 is tipping us over a climactic cliff any year now. Indeed, the authors are careful to state that their work suggests that things move pretty quickly in the climate, but declient to comment on current anthropogenic CO2 emissions and what they may mean for the planet's climate. ®
* We have no idea if the authors really carried a three, but it is probably necessary to point out that it is just a rhetorical flourish in case someone takes it seriously in their rebuttal of this research.
Well maybe....if there was any....but there isn’t.
Since the temp is going down, we need more Co2 to get the planet warmer, and to produce more forests. This is a self balancing system after all.
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Clim. Past, 8, 1213-1221, 2012
www.clim-past.net/8/1213/2012/
doi:10.5194/cp-8-1213-2012
© Author(s) 2012. This work is distributed
under the Creative Commons Attribution 3.0 License.
Tightened constraints on the time-lag between Antarctic temperature and CO2 during the last deglaciation
1Antarctic Climate & Ecosystems Cooperative Research Centre, University of Tasmania, Hobart, Tasmania, Australia
2Institute of Marine and Antarctic Studies, University of Tasmania, Hobart, Tasmania, Australia
3Centre for Ice and Climate, University of Copenhagen, Copenhagen, Denmark
4Australian Antarctic Division, Kingston, Tasmania, Australia
Abstract. Antarctic ice cores provide clear evidence of a close coupling between variations in Antarctic temperature and the atmospheric concentration of CO2 during the glacial/interglacial cycles of at least the past 800-thousand years. Precise information on the relative timing of the temperature and CO2 changes can assist in refining our understanding of the physical processes involved in this coupling. Here, we focus on the last deglaciation, 19 000 to 11 000 yr before present, during which CO2 concentrations increased by ~80 parts per million by volume and Antarctic temperature increased by ~10 °C. Utilising a recently developed proxy for regional Antarctic temperature, derived from five near-coastal ice cores and two ice core CO2 records with high dating precision, we show that the increase in CO2 likely lagged the increase in regional Antarctic temperature by less than 400 yr and that even a short lead of CO2 over temperature cannot be excluded. This result, consistent for both CO2 records, implies a faster coupling between temperature and CO2 than previous estimates, which had permitted up to millennial-scale lags.
Final Revised Paper (PDF, 463 KB) Discussion Paper (CPD)
Citation: Pedro, J. B., Rasmussen, S. O., and van Ommen, T. D.: Tightened constraints on the time-lag between Antarctic temperature and CO2 during the last deglaciation, Clim. Past, 8, 1213-1221, doi:10.5194/cp-8-1213-2012, 2012. Bibtex EndNote Reference Manager XML
So when it’s record cold winters that’s just “weather” and not climate thus irrelevant to the debate. But just one record hot summer and it’s all “The Day After” time again and Vegas being beachfront property in 5 years. We’ve seen this movie already.
These guys will never learn that when you use weasel words in your apocalypse, it takes all of the import right out of it .
Kinda like the Greenland ice falling into the ocean and almost sinking a boat in the summertime. CO2 reflects the sunlight as all things in the atmosphere does. I f there is any warming it is because there is less stuff up there not more.
lets parse this correctly
“My grant is running out faster than I thought”
Maybe all that ridiculous sun activity has something to do with all this? /rhetorical.
See text and video linked at #9.
from http://www.americanthinker.com/2012/01/al_gores_last_theorem.html
I conclude therefore with a little syllogism of my own, which I tentatively name Al Gore’s Last Theorem:
1. Warmist Climate Scientist claim AGW climate model predicts impending global doom, prevention of which requires All of Mankind to make substantial sacrifices
2. Warmist Climate Scientists will not make substantial sacrifices i.e. publishing their proprietary computer codes.
3. “All of Mankind” contains the entire subset, “Warmist Climate Scientists”.
Therefore: Given 3, statements 1 and 2 are logically incompatible. Statement 1 is false.
QED
There’s too much exhaling going on out there. People need to knock it off!
Surprised nobody noted the money quote:
“we show that the increase in CO2 likely lagged the increase in regional Antarctic temperature by less than 400 yr and that even a short lead of CO2 over temperature cannot be excluded”
In short, previous estimates were 800-1200 year lag; this indicates 400 years.
Either way, CO2 LAGS temperature; CO2 does NOT drive temperature, which is the whole flawed premise underlying AGW theory
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