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Ice age ended with carbon dioxide spikes: Study
April 04, 2012
April 04, 2012
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(AP) WASHINGTON - The dramatic temperature increases that thawed the last ice age followed spikes in carbon dioxide levels in the air, a new study finds. Researchers say that further strengthens the scientific case explaining current man-made global warming.
In the new study, scientists show the atmospheric concentration of that heat-trapping greenhouse gas jumped more than 40 percent. Then global temperatures went up about 6 degrees Fahrenheit (3.5 degrees Celsius).
What is remarkable is that when the two are plotted they rise, plateau and rise again in a striking similar way with a slight lag.
The warming over 6,000 years
In the new study, scientists show the atmospheric concentration of that heat-trapping greenhouse gas jumped more than 40 percent. Then global temperatures went up about 6 degrees Fahrenheit (3.5 degrees Celsius).
What is remarkable is that when the two are plotted they rise, plateau and rise again in a striking similar way with a slight lag.
The warming over 6,000 years
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