Studies confirm greenhouse mechanisms even further into past

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The ice core boring at Dome C in Antarctica shows that the curves for the temperature and the greenhouse gases carbon dioxide and methane follow each other over the past 800000 years -- with few deviations. (See arrows) Credit: Professor Thomas Bluni ...
The ice core boring at Dome C in Antarctica shows that the curves for the temperature and the greenhouse gases carbon dioxide and methane follow each other over the past 800,000 years -- with few deviations. (See arrows) Credit: Professor Thomas Blunier, Centre for Ice and Climate, Niels Bohr Institute, University of Copenhagen

The newest analysis of trace gases trapped in Antarctic ice cores now provide a reasonable view of greenhouse gas concentrations as much as 800,000 years into the past, and are further confirming the link between greenhouse gas levels and global warming, scientists reported today in the journal Nature.


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