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Politics : The Environmentalist Thread
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To: Land Shark who wrote (27226)12/18/2009 4:38:59 PM
From: Brumar89  Read Replies (1) of 36917
 
There sure are more things that influence tree growth than temperature - thats why the claims about past temperatures based on tree rings as temperature proxies are worthless.
Glad you admit that.

Your claim that tree rings were accurate measures of temperature for a 1000 years before 1960 but became unreliable after 1960 is ridiculous. Its so ridiculous the climate scientologists had to hide the failure of tree rings to track with temperature after 1960.

2) Now we have reliable sources of direct measurement of surface temperatures - so who cares about tree rings????

And surface temperatures tell us tree rings are lousy measures of temperature.

I'm writing this in a simplistic manner You fail to acknowledge the basic issue .... that tree rings failure to track with temperature after 1960 mean they almost certainly weren't reliable for the past 1000 years either.
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