SSDD
Gold Member
- Nov 6, 2012
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Why should anyone be surprised that a glacier was growing, a thousand years ago?
And why don't you tell us what - for you - would qualify as a "definitive human fingerprint" so we don't waste time playing guessing games?
But, while I'm typing, I'd proffer the isotopic analysis that shows that every bit of the excess CO2 (above 280 ppm) came from the combustion of fossil fuels. But do feel free to explain why that's not a "definitive human fingerprint".
Because it has yet to be proven that the additional CO2 causes warming. A definitive human fingerprint would be one that could not easily be due to other causes. At present, all warming is within the confines of natural variability. A definitive human fingerprint would be one that steps outside of natural variability. Lets see such a fingerprint.
And consider the time line regarding that glacier...those trees were growing during the MWP...a time which you warmers claim was barely, if at all as warm as today and the warmth only happened in the North Atlantic region. Clearly those trees were growing in a climate that was warmer than the present and oddly enough, the glacier was not in the north atlantic.
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