Posted on 11/20/2008 10:10:03 AM PST by Ernest_at_the_Beach
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Found this at Drudge....Cornell University Study:
Global warming predictions are overestimated, suggests study on black carbon
A detailed analysis of black carbon -- the residue of burned organic matter -- in computer climate models suggests that those models may be overestimating global warming predictions.
A new Cornell study, published online in Nature Geosciences, quantified the amount of black carbon in Australian soils and found that there was far more than expected, said Johannes Lehmann, the paper's lead author and a Cornell professor of biogeochemistry. The survey was the largest of black carbon ever published.
As a result of global warming, soils are expected to release more carbon dioxide, the major greenhouse gas, into the atmosphere, which, in turn, creates more warming. Climate models try to incorporate these increases of carbon dioxide from soils as the planet warms, but results vary greatly when realistic estimates of black carbon in soils are included in the predictions, the study found.
Soils include many forms of carbon, including organic carbon from leaf litter and vegetation and black carbon from the burning of organic matter. It takes a few years for organic carbon to decompose, as microbes eat it and convert it to carbon dioxide. But black carbon can take 1,000-2,000 years, on average, to convert to carbon dioxide.
By entering realistic estimates of stocks of black carbon in soil from two Australian savannas into a computer model that calculates carbon dioxide release from soil, the researchers found that carbon dioxide emissions from soils were reduced by about 20 percent over 100 years, as compared with simulations that did not take black carbon's long shelf life into account.
The findings are significant because soils are by far the world's largest source of carbon dioxide, producing 10 times more carbon dioxide each year than all the carbon dioxide emissions from human activities combined. Small changes in how carbon emissions from soils are estimated, therefore, can have a large impact.
"We know from measurements that climate change today is worse than people have predicted," said Lehmann. "But this particular aspect, black carbon's stability in soil, if incorporated in climate models, would actually decrease climate predictions."
The study quantified the amount of black carbon in 452 Australian soils across two savannas. Black carbon content varied widely, between zero and more than 80 percent, in soils across Australia.
"It's a mistake to look at soil as one blob of carbon," said Lehmann. "Rather, it has different chemical components with different characteristics. In this way, soil will interact differently to warming based on what's in it."
One would think so.
Personally, I'm expecting laws criminalizing private ownership of outdoor thermometers, or dissemination of outdoor temperature data that does not agree with the predictions of "computer models."
Look for subtle changes in the wording of your local weather report. Instead of giving the current temperature, they will call it the "apparent temperature."
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http://earthobservatory.nasa.gov/Features/OceanCooling/page1.php
"It is a cold fact: the Global Cooling presents humankind with the most important social, political, and adaptive challenge we have had to deal with for ten thousand years. Your stake in the decisions we make concerning it is of ultimate importance; the survival of ourselves, our children, our species," wrote Lowell Ponte in 1976.
Thanks for the link to an informative article.
Discovered: Cosmic Rays from a Mysterious, Nearby Object
See post #6.
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100,000-Year Climate Pattern Linked To Sun's Magnetic Cycles:
ScienceDaily (Jun. 7, 2002) HANOVER, N.H.
Thanks to new calculations by a Dartmouth geochemist, scientists are now looking at the earth's climate history in a new light. Mukul Sharma, Assistant Professor of Earth Sciences at Dartmouth, examined existing sets of geophysical data and noticed something remarkable: the sun's magnetic activity is varying in 100,000-year cycles, a much longer time span than previously thought, and this solar activity, in turn, may likely cause the 100,000-year climate cycles on earth. This research helps scientists understand past climate trends and prepare for future ones.
http://www.sciencedaily.com/releases/2002/06/020607073439.htm
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I wonder if the Models include any allowance for more than just the Sun's Rays?
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Global warming predictions are overestimated, suggests study on black carbon ^
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11/19/2008 2:58:38 PM PST · by decimon · 25 replies · 380+ views Cornell University ^ | Nov. 18, 2008 | Krishna Ramanujan |
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| Global warming predictions are overestimated, suggests study on black carbon (Cornell University) ^ |
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11/19/2008 5:09:33 PM PST · by Behind Liberal Lines · 34 replies · 660+ views Cornell Chronicle ^ | Nov. 18, 2008 | By Krishna Ramanujan |
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************************Highlighting this from the site:
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New Study Finds Greenland Ice Melt 'not changing' or 'dropping'
3 Jul 08 - A new Dutch study of 17 years of satellite measurements of ice movement in western Greenland concludes that the speedup of the ice is a transient summertime phenomenon.
See New Study Finds Greenland Ice Melt 'not changing' or 'dropping
Photo from the thread:
Global Warming Experts: Hottest October Ever (Because We Used September Temperatures)
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Major, major hoax by Nasa’s Goddard Institute for Space Studies (GISS), which is run by Al Gore’s chief scientific charlatan, Dr James Hansen.
This clown is younger than me and perhaps you....
Photo above of Dr Hansen.....
Forest fires prevent global warming???? Who'da thunk it??
Hansen has been an important figure in the global warming scam. Thanks Ernest.
Thanks Val. Global warming is the new Lysenkoism.
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Global warming predictions are overestimated,
suggests study on black carbon (Cornell University)
Cornell Chronicle | Nov. 18, 2008 | By Krishna Ramanujan
Posted on 11/19/2008 5:09:33 PM PST by Behind Liberal Lines
http://www.freerepublic.com/focus/f-news/2134998/posts
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