Warmist ‘hockey stick’ smashed up November 26, 2008Posted by honestclimate in Temperature.
Tags: climate change, global warming, hockey stick, michael mann
Warmist ‘hockey stick’ smashed up
By Christopher Chantrill
They smashed up the “hockey stick” at Climate Audit on Sunday. The “hockey stick” is a chart developed by Michael Mann et al. ten years ago that showed that global temperatures were pretty constant until about 100 years ago when they began to shoot up (hence “hockey stick”). It was based on a statistical analysis of numerous temperature “proxies” such as tree ring width on bristle-cone pine trees.
Willis Eschenbach of climateaudit.org did some statistical analysis of his own. He asked: which of the Mannian temperature proxies actually carry the “hockey-stick” signal?