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Politics : The Environmentalist Thread
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To: Brumar89 who wrote (25349)10/1/2009 3:39:27 PM
From: FJB2 Recommendations  Read Replies (1) of 36921
 
Cherry picking the numbers – A scientific scandal
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29 Sep 09 – “A scientific scandal is casting a shadow over a number of recent peer-reviewed climate papers,” says this article by Andrew Orlowski.

It’s also casting a shadow on IPCC assessments.

“At least eight papers purporting to reconstruct the historical temperature record times may need to be revisited,” says Orlowski, “with significant implications for contemporary climate studies, the basis of the IPCC's assessments. A number of these involve senior climatologists at the British climate research centre CRU at the University East Anglia.”

Paleoclimataologists use tree rings as a temperature proxy – a science called dendrochronology - to create a "reconstruction" of historical temperature anomalies.

“Since 2000, a large number of peer-reviewed climate papers have incorporated data from trees at the Yamal Peninsula in Siberia …curiously superseding a newer and larger data set from nearby. The older Yamal trees indicated pronounced and dramatic uptick in temperatures.”

Even though the papers had been peer reviewed, the editors of the Royal Society's Philosophical Transactions B insisted on seeing the data.

Hooray for those brave editors.

The Yamal data set uses just 12 trees from a larger set to produce its dramatic upward trend, says Orlowski. “Yet many more were cored, and a larger data set (of 34) from the vicinity shows no dramatic recent warming, and warmer temperatures in the middle ages.”

“The implication is clear,” says Orlowski , “the dozen were cherry-picked.”

See entire article, entitled “Treemometers: A new scientific scandal”
theregister.co.uk
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