Michael Mann's hockey stick graph is the most laughable & widely discredited object in the history of science

Monckton to Mann: Forget personalities, science is about truth

Source:  Christopher Monckton, The SPPI Blog

Lord Monckton

The Editor, Richmond Times-Dispatch, August 15, 2013.

Sir,

Charles Battig did a great service to your readers by spreading truth about the now-collapsed climate scare. Michael Mann’s criticisms of him (August 5) were ill-founded. Attorney General Cuccinelli investigated Mr Mann under the Fraud Against Taxpayers Act 2000 because of what I shall delicately call the statistical peculiarities evident in Mr Mann’s “hockey stick” graph that had purported to abolish the medieval warm period and to show – falsely – that today’s quite normal global temperatures were unprecedented in 1300 years.

Mr Mann’s graph relied heavily upon the widths of tree-rings from bristlecone pines as a basis for estimating temperatures before we had thermometers, although these pines are unreliable proxies because the tree-rings widen not only when the weather is warmer but also when it is wetter and when there is more CO2 in the air. That kinda musses things up.

The Matrix 4

According to real scientists, the graph also gave extreme weighting to datasets that showed unusual 20^th-century warming at the expense of those that did not. And the program that Mr Mann created to draw the graph would have shown the 20^th century as unusually warm even if random red noise rather than real-world data were fed in. There were numerous other statistical curiosities. Mr Mann’s graph is perhaps the most laughable and widely-discredited object in the history of bad science supporting worse politics.

Most learned papers based on real-world data show that the medieval warm period was real, global, and warmer than the present. A spate of papers by computer modelers apparently confirming Mr Mann’s contrarian conclusion appeared with interesting suddenness after his paper was scientifically discredited. Many of the authors, according to an independent statistical report for the House Energy & Commerce Committee in 2006, were linked to Mr Mann by previous co-authorship. Hmmm.

Mr Battig did not criticize Mr Mann for his bad personality, though Mr Mann’s characteristically malevolent description of his opponents as “deniers” and “denialists” several times in his letter of reply would be illegal in Europe as being anti-Jewish, racialist hate-speech disrespectful of Holocaust victims. Certainly no real scientist would use such language. Mr Battig criticized Mr Mann for his flagrantly bad science, not his flagrantly bad manners. Science is not about personalities. It is about seeking truth. Mr Mann’s graph was not true. It was not science. It deserved criticism. It got it.

Besides, according to the satellites, notwithstanding record increases in CO2 concentration there has been no global warming at all for 16 years 8 months – and counting. That is 200 months without so much as a flicker of global warming. The game is up and the scare is over.

Yours faithfully,

Monckton of Brenchley

Related: 

Michael Mann, climate charlatan

There He Goes Again: Mann Claims His Hockey Stick was Given "Clean Bill of Health"

There He Goes Again: Mann Claims His Hockey Stick was Affirmed by the NAS

There He Goes Again, Version 4.0: Mann Claims His Hockey Stick was Affirmed by the NAS

There He Goes Again, Version 5.0: Mann Claims His Hockey Stick was Affirmed by the NAS