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What A Week It Was: Apocadocuments from
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ApocaDocuments (4) matching "carbon emissions" from this week
[see full week] ~ [see all stories tagged "carbon emissions"]
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Thu, Feb 3, 2011
from Discovery:
Amazon Drought of 2010 Sign of Forest Fatigue
The tropical forests of Amazonia may be giving up their role as buffers against the continuing buildup of carbon dioxide in the atmosphere, scientists report, a circumstance that could accelerate climate change. The warning comes in the new issue of the journal Science, where an international research team reports that the drought in the Amazon during 2010 was even worse than what scientists called the "once-in-a-century" drought of 2005.... "The two recent Amazon droughts demonstrate a mechanism by which remaining intact tropical forests of South American can shift from buffering the increase in atmospheric carbon dioxide to accelerating it," the scientists write. Growing trees absorb CO2 from the atmosphere. Dying trees give it back. ...
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How can a carbon sink become a carbon faucet?
ApocaDoc
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Wed, Feb 2, 2011
from EnvironmentalResearchWeb:
Planet is 'more sensitive to carbon dioxide than we thought'
... Kiehl describes how he examined the relationship between global temperatures and high levels of carbon dioxide in the atmosphere tens of millions of years ago. Global temperatures then averaged about 16 deg C above pre-industrial levels.
The article pulls together several recent studies that look at various aspects of the climate system, while adding a mathematical approach by Kiehl to estimate average global temperatures in the distant past.
The study found that carbon dioxide may have two times or more the effect on global temperatures than currently projected by computer models of global climate. The world's leading computer models generally project that a doubling of carbon dioxide in the atmosphere would have a climate feedback factor (ratio of change in surface temperature to radiative forcing) in the range of 0.5 to 1.0 deg C per watts per square metre.
However, the published data show that the comparable climate feedback factor of carbon dioxide 35 million years ago amounted to about 2 deg C per watt per square metre.... Because carbon dioxide is being pumped into the atmosphere at a rate that has never been experienced, Kiehl could not estimate how long it would take for the planet to fully heat up. However, a rapid warm-up would make it especially difficult for societies and ecosystems to adapt, he says. He estimates that global temperatures may take centuries or millennia to fully adjust in response to the higher carbon dioxide levels. ...
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Planet, if you want our respect, you'll need to toughen up.
ApocaDoc
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Mon, Jan 31, 2011
from New York Times:
Once Popular, Car Pools Go the Way of Hitchhiking
Remember the 1970s? Watergate, disco, oil embargoes and, of course, car-pooling. Many big companies organized group rides for their employees, and roughly one in four Americans who drove to work shared a ride with others. But now far more people are driving alone, as companies have spread out, Americans are wealthier and cars have become cheaper to own. The percentage of workers who car-pool has dropped by almost half since 1980, the first time the Census Bureau started systematically tracking the numbers, according to new data from the bureau. ...
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And thus we shall drive / one person per vehicle / unto our ruin
ApocaDoc
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Mon, Jan 31, 2011
from Guardian:
World carbon dioxide emissions data by country: China speeds ahead of the rest
A reduction in global greenhouse gas emissions is not only the decided goal of environmentalists but also of pretty much every government in the world. Currently 191 countries have adopted the Kyoto protocol with the aim of collectively reducing greenhouse gas emissions by 63.9 percent of the 1990 levels by 2012.... * China emits more CO2 than the US and Canada put together - up by 171 percent since the year 2000
* The US has had declining CO2 for two years running - the first time this has happened, certainly since these records began. ...
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C'mon America! This is a Sputnik moment! Consume!
ApocaDoc
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