SunsDirectRoleInGlobalWarmingMayBeUnderestimated - Sun's...

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Sun's Direct Role in Global Warming May Be Underestimated, Duke Physicists Report Study does not discount the suspected contributions of 'greenhouse gases' in elevating surface temperatures Friday, September 30, 2005 print | email | ShareThis DURHAM, N.C. -- At least 10 to 30 percent of global warming measured during the past two decades may be due to increased solar output rather than factors such as increased heat-absorbing carbon dioxide gas released by various human activities, two Duke University physicists report. The physicists said that their findings indicate that climate models of global warming need to be corrected for the effects of changes in solar activity. However, they emphasized that their findings do not argue against the basic theory that significant global warming is occurring because of carbon dioxide and other “greenhouse” gases. Nicola Scafetta, an associate research scientistworking at Duke's physics department, and Bruce West, a Duke adjunct physics professor, published their findings online Sept. 28, 2005, in the research journal Geophysical Research Letters. West is also chief scientist in the mathematical and information sciences directorate of the Army Research Office in Research Triangle Park. Scafetta's and West's study follows a Columbia University researcher's report of previous errors in the interpretation of
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This note was uploaded on 08/23/2011 for the course ECE 4833 taught by Professor Doolittle during the Spring '10 term at Georgia Institute of Technology.

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SunsDirectRoleInGlobalWarmingMayBeUnderestimated - Sun's...

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