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Greenhouse gas effect consistent over 420 million years

03-28-2007 · EurekAlert!

New calculations show that sensitivity of Earth's climate to changes in the greenhouse gas carbon dioxide (CO2) has been consistent for the last 420 million years, according to an article in Nature by geologists at Yale and Wesleyan Universities. The study confirms that in the Earth's past 420 million years, each doubling of atmospheric CO2 translates to an average global temperature increase of about 3° Celsius, or 5° Fahrenheit.

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Keywords: greenhouse, gas, effect, consistent, 420, million

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