McIntyre
tlambert | February 19, 2005 Realclimate has a good explanation of the latest battle in the hockey stick wars. It looks to me like McIntyre & McKitrick's claim (that the hockey stick is the product of an erroneous calculation) is not correct. That doesn't mean that the graph is correct of course, since the proxies the graph is built on may not measure temperatures very well.
In an editorial, the Wall Street Journal systematically misrepresents the whole affair: In 1998, Willie Soon and Sallie Baliunas of the Harvard-Smithsonian Center for Astrophysics published a paper in…
tlambert | October 21, 2004 There seems to be some confusion about McKitrick's latest attempt to refute global warming. For instance, Andrew Sullivan thinks that McKitrick's famous degrees-radians screw up is part of this latest attempt. However, McKitrick claims to have refuted global warming in several different ways and the degrees-radians screw up was a in a different paper to his latest one. I decided to draw up a table to help folks sort them out.Authors
Summary
Consequences if he is right
Status
Essex and McKitrick
There is no physical basis to average temperature.
No global warming…
tlambert | October 18, 2004 In this column, Richard Muller claims that McKitrick and McIntyre have shown that the hockey stick graph is an "artifact of poor mathematics". If you have been following the global warming debate this claim should look familiar, because McKitrick and McIntyre made the same claim last year as well. So what's new? Well, last year they claimed that the hockey stick was the product "collation errors, unjustifiable truncations of extrapolation of source data, obsolete data, geographical location errors, incorrect calculations of principal…
tlambert | July 8, 2004 Mann, Bradley and Hughes have published some corrections to the supplementary information for the famous hockey stick graph showing the temperature record of the last 1000 years. They say that the errors do not affect their published results. This could explain why McKitrick and McIntyre could not reproduce their results, but McKitrick is continuing to insist that Mann's graph is wrong.
McKitrick has also published some errata. Unlike Mann's error McKitrick's error affects his results: Figure 3 in the Cooler Heads Briefing on TBS contains an error. Tim…