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Old 11-04-2009, 10:08 PM   #39 (permalink)
jamesqf
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Quote:
Originally Posted by chuckm View Post
During the Jurassic period, the CO2 level was at 1950ppm. Agreed or not? The earth was 3ºC warmer than present.
Sure, but the problem is that you're creating the unstated assumption that everything else was the same then as now, which is far from being the case. Solar constant, atmospheric pressure & composition, and many other things were different, so not surprising that there might be different results.
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