March 17, 2011

Decline? What decline...



Berkeley physicist Richard Muller on Climategate, and "hide the decline."

As a simplified explanation, the phrase "hide the decline," from the Climategate e-mails, refers to tree-ring proxy data, used to estimate temperatures from the past before thermometers. The ugly fact is that the data shows global temps going down in the late 20th century. As you will see in the video. Researcher Keith Briffa [Link] substituted measured temperatures for proxy temperatures for that period, and did so in a way that was not obvious.

That can sometimes be a legitimate thing to do—often data-sets are incomplete, or show anomalies that are clearly wrong. Then one adds data from some other source to give a larger picture.

BUT, in this case, the proxy data also failed to show the warming of the Medieval Warm Period. You know, the time when Greenland had farms, and England produced wine. In that case, Briffa was perfectly happy to say that the tree-ring data was an oracle of truth, since warmists want, above all, to kill the Medieval Warm, which contradicts the narrative that we are now in some sort of "unprecedented" warming.

Posted by John Weidner at March 17, 2011 11:11 AM
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