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December 13, 2009

Putting the "Hockey Stick" into perspective. [krakatoa]

It's important to bear in mind that the discrediting of Mann's Hockey Stick didn't rely on a lack of warming, but rather centered on the rate and amplitude of the warming, and in comparison to historic trends.

Doc @ The Autopsy has compiled the Greenland & Vostok Ice Core graphs in a tidy YouTube presentation which is helpful for perspective.

Anthony Watts adds in the the instrumental data post 1900, as the nature of ice cores require several decades of compaction to form. Even with that data which has become suspect, the point is clearly made. Current warming is far from historic highs, far from unusual in our current 10000 year warm trend, and we should all be far more worried about what causes Ice Ages.

posted by xgenghisx at 11:57 AM

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[krakatoa] It's important to bear in mind that the discrediting of Mann's Hockey Stick didn't rely on a lack of warming, but rather centered on the rate and amplitude of the warming, and in comparison to historic trends. Doc @ The Autopsy has compiled the Greenland & Vostok Ice Core graphs in a tidy YouTube presentation which is helpful for perspective. Anthony Watts adds in the the instrumental data post 1900, as the nature of ice cores require several decades of compaction to form. Even with that data which has become suspect, the point is clearly made. Current warming is far from historic highs, far from unusual in our current 10000 year warm trend, and we should all be far more worried about what causes Ice Ages. posted by xgenghisx at 11:57 AM \| Access Comments <script language="javascript" src="http://adserver.adtechus.com/addyn/3.0/5235/1131537/0/170/ADTECH;loc=700;cookie=info;target=_blank;key=key1+key2+key3+key4;grp=[group]"></script><noscript><a href="http://adserver.adtechus.com/adlink/3.0/5235/1131537/0/170/ADTECH;loc=300;key=key1+key2+key3+key4;grp=[group]" target="_blank"><img src="http://adserver.adtechus.com/adserv/3.0/5235/1131537/0/170/ADTECH;loc=300;key=key1+key2+key3+key4;grp=[group]" border="0" width="300" height="250"></a></noscript>	Recent Comments JT: "! ..." redc1c4 [/b] [/i] [/s] [/u]: "runs serpentine! Posted by: Jim at June 17, 2 ..." Chi-Town Jerry: "French toast - liberal maple syrup.. but ONLY afte ..." JT: "For those who might have missed it: Msg from M ..." Mark Andrew Edwards [/b][/i]: "Ah, good news! 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