Navigation Links
Revised theory suggests carbon dioxide levels already in danger zone
Date:11/7/2008

New Haven, Conn. If climate disasters are to be averted, atmospheric carbon dioxide (CO2) must be reduced below the levels that already exist today, according to a study published in Open Atmospheric Science Journal by a group of 10 scientists from the United States, the United Kingdom and France.

The authors, who include two Yale scientists, assert that to maintain a planet similar to that on which civilization developed, an optimum CO2 level would be less than 350 ppm a dramatic change from most previous studies, which suggested a danger level for CO2 is likely to be 450 ppm or higher. Atmospheric CO2 is currently 385 parts per million (ppm) and is increasing by about 2 ppm each year from the burning of fossil fuels (coal, oil, and gas) and from the burning of forests.

"This work and other recent publications suggest that we have reached CO2 levels that compromise the stability of the polar ice sheets," said author Mark Pagani, Yale professor of geology and geophysics. "How fast ice sheets and sea level will respond are still poorly understood, but given the potential size of the disaster, I think it's best not to learn this lesson firsthand."

The statement is based on improved data on the Earth's climate history and ongoing observations of change, especially in the polar regions. The authors use evidence of how the Earth responded to past changes of CO2 along with more recent patterns of climate changes to show that atmospheric CO2 has already entered a danger zone.

According to the study, coal is the largest source of atmospheric CO2 and the one that would be most practical to eliminate. Oil resources already may be about half depleted, depending upon the magnitude of undiscovered reserves, and it is still not practical to capture CO2 emerging from
'/>"/>

Contact: Janet Rettig Emanuel
janet.emanuel@yale.edu
203-432-2157
Yale University
Source:Eurekalert  

Page: 1 2

Related biology news :

1. New and revised limits ensure safety in the workplace
2. Interacting protein theory awaits test from new neutron analysis tools
3. St. Jude identifies the specific cell that causes eye cancer, disproving long-held theory
4. Study proposes new theory of how viruses may contribute to cancer
5. Group selection, a theory whose time has come...again
6. Breakthrough technology observes synapse in real time, supporting theory of vesicular recycling
7. Innovative model connects circuit theory to wildlife corridors
8. Model connects circuit theory to wildlife corridors
9. Zoologists challenge longstanding theory that eyespots mimic the eyes of predators enemies
10. Researchers offer new theory for dogfish and skate population outburst on Georges Bank
11. Woolly-mammoth gene study changes extinction theory
Post Your Comments:
*Name:
*Comment:
*Email:
Related Image:
Revised theory suggests carbon dioxide levels already in danger zone
(Date:10/16/2014)... Melbourne researchers have challenged conventional thinking on how the ... new mechanism for how bowel cancer starts. , The ... maintaining and regenerating the ,crypts, that are a feature ... are involved in bowel cancer development, a controversial finding ... existence. , Using 3D imaging technologies, Dr Chin Wee ...
(Date:10/16/2014)... 2014 NXT-ID, Inc. (NASDAQ: NXTD ... authentication company focused on the growing mobile commerce market ... Wocket™, the Smart Wallet, at the 13 th ... leading global conference on the intersection of technology and ... Anderson , founder and publisher of the Strategic News ...
(Date:10/15/2014)... Gauß-Allianz has admitted Johannes Gutenberg University Mainz (JGU) ... science hub continues to maintain a significant nationwide ... , "The acceptance of Johannes Gutenberg University Mainz ... a milestone in the national and international competition ... state of Rhineland-Palatinate can be proud that Mainz ...
Breaking Biology News(10 mins):Cryptic clues drive new theory of bowel cancer development 2NXT-ID Inc. to Present at 13th Annual FiRe Conference 2NXT-ID Inc. to Present at 13th Annual FiRe Conference 3Johannes Gutenberg University Mainz joins Germany's Gauss-Allianz as a full member 2Johannes Gutenberg University Mainz joins Germany's Gauss-Allianz as a full member 3
... differences seen among patients with schizophrenia may be explained by ... risk genes. These findings appear in a new imaging-genetics study ... The study revealed that people with schizophrenia who had ... to develop the illness at a younger age and had ...
... like a bomb shelter, Perry Gerakines makes something ordinary yet truly ... No, this ice needs such intense cold and low pressure to ... Earth. And when Gerakines makes the ice, he must keep the ... pollen. These ultrathin layers turn out to be perfect for ...
... cells during puberty to help navigate the complex social world ... current issue of the Proceedings of the National Academy ... cells you,re born with are all you get. After studies ... wisdom held that such growth was limited to two brain ...
Cached Biology News:Single gene might explain dramatic differences among people with schizophrenia 2NASA Goddard lab works at extreme edge of cosmic ice 2NASA Goddard lab works at extreme edge of cosmic ice 3NASA Goddard lab works at extreme edge of cosmic ice 4Brain adds cells in puberty to navigate adult world 2
(Date:10/22/2014)... Shimadzu Scientific Instruments introduces its Open Solution QuantAnalytics(TM) ... management and clinical markets. The software increases the speed ... users to highlight and review results that are of ... to filter results by group or based on a ... need to sift through analytes of no interest. In ...
(Date:10/22/2014)... WriteResult, LLC – a premier provider of ... a team of researchers from Yale University’s School of ... to provide electronic questionnaire data collection through use of ... in May, aims to evaluate the impact of a ... and participation in urban agriculture to impact their consumption ...
(Date:10/22/2014)... Grace Century, a private equity consultancy ... the addition of Dr. Yousef “Josh” Siddiqui , ... Dr. Siddiqui will provide further healthcare expertise to its ... University College Medical School in the late ... 2001. With further certification as a General Practitioner (GP), ...
(Date:10/22/2014)... According to new market research report "Cloud Professional ... & Support), by Service Model (SaaS, PaaS, IaaS), ... & Community)) - Global Forecast to 2019", published ... Services Market into various sub-segments with an in-depth ... the drivers and restraints for this market with ...
Breaking Biology Technology:Shimadzu Releases QuantAnalytics Open Access LCMS Software Package for Clinical Applications 2myPROpad™ Topic of Panel Discussion at the Yale Food Systems Symposium 2myPROpad™ Topic of Panel Discussion at the Yale Food Systems Symposium 3Dr. Yousef Siddiqui joins the Grace Century Advisory Team 2Cloud Professional Services Market by Public, Private, Hybrid & Community Expected to Reach $34.41 Billion by 2019 - New Report by MarketsandMarkets 2Cloud Professional Services Market by Public, Private, Hybrid & Community Expected to Reach $34.41 Billion by 2019 - New Report by MarketsandMarkets 3Cloud Professional Services Market by Public, Private, Hybrid & Community Expected to Reach $34.41 Billion by 2019 - New Report by MarketsandMarkets 4Cloud Professional Services Market by Public, Private, Hybrid & Community Expected to Reach $34.41 Billion by 2019 - New Report by MarketsandMarkets 5
... 2011 During a ,Day of Science, more than 30 ... what it was like to be scientists for a day ... Inc. (S2S). The "A Day in the Life of a ... programs offered by S2S that seeks to address the fact ...
... (Nasdaq: DNDN ) today announced that management will present ... in New York City, NY on May 25, 2011 at 1:00 ... Palos Verdes, CA on June 7, 2011 at 2:00 p.m. PT ... available for replay from Dendreon,s website, www.dendreon.com .  If you ...
... BRISBANE, Calif., May 19, 2011 InterMune, Inc. (NASDAQ: ... of its 2011 Analyst Day presentations on Thursday, May ... in New York.  Presentations by InterMune,s executive management team ... and a comprehensive update of InterMune,s commercial and scientific ...
Cached Biology Technology:Local Partnership Addresses Lagging Scores and Interest in Science and Math Among Students 2Local Partnership Addresses Lagging Scores and Interest in Science and Math Among Students 3InterMune to Webcast 2011 Analyst Day Presentations 2
... SPA Screening Assay, 5 x ... eliminate lengthy sample extraction procedures and ... 1.32-84.28 ng/ml (4-256 pmol/ml).Sensitivity: 0.65 ng/ml ... C. Category: Drug Screening & Cellular ...
...
Request Info...
... Streptavidin-Horseradish Peroxidase Conjugate, 2 ... reporter enzyme molecules for ... in situ hybridization applications.High ... & Labeling & Detection, ...
Biology Products: