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Oh, and measuring the concentration of gases trapped in ice is a better proxy than growth rates of organisms.

That's a highly disputable assertion. Do you know the work of Zbigniew Jaworowski? You'll understand the 83 year joke there.


There was not a lot of direct measurement of atmospheric composition before the 19th century, was there?

But you are aware that the measurements made from the XIX onwards do not match the ice proxies, don't you?


You might find me At The Edge Of Time.

by Luis de Sousa (luis[dot]a[dot]de[dot]sousa[at]gmail[dot]com) on Mon Jan 28th, 2008 at 11:19:21 AM EST
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