| Warming Caused by Soot, Not CO2 |
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| Written by Doug L. Hoffman |
| Tuesday, 21 July 2009 20:59 |
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[Illustrations, footnotes and references available in PDF version]
A new paper in Science reports that a careful study of satellite
data show the assumed cooling effect of aerosols in the
atmosphere to be significantly less than previously estimated.
Unfortunately, the assumed greater cooling has been used in
climate models for years. In such models, the global-mean
warming is determined by the balance of the radiative
forcings—warming by greenhouse gases balanced against
cooling by aerosols. Since a greater cooling effect has been used
in climate models, the result has been to credit CO2 with a
larger warming effect than it really has.
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| Last Updated on Tuesday, 21 July 2009 21:00 |
























