We received this comment on the research of McIntyre and McKitrick from Dr. Anthony Lupo, Professor of Atmospheric Science, University of Missouri-Columbia: I will confess that I was not aware of the details of Steve McIntyre and Ross McKitrick’s critique of the "hockey stick" but after a cursory reading of the enclosed materials it seems […]
I’m just learning how to do this, with the admirable help of John A. Comments are lightly moderated – which is really only aimed at spam. I just learned how to put the comments through. I’ll try to have comments cleared at least twice a day.
I defer to Roy Spencer on the subject of why the Hockey Stick was taken so seriously and so completely (my emphasis in bold): The hockey stick, along with the “warmest in 1,000 years” argument, has become a central theme of debates over the Kyoto Protocol, a treaty to limit emissions of greenhouse gases, in […]
Mann et al. have recently argued that they can salvage MBH98-type results, even with correct PC calculations by also using “the standard selection rule (Preisendorfer’s Rule N) used by MBH98”. They say that this method permits them to retain 5 PCs in the North American network. The reason why this matters to them is that […]
In the aftermath of the Bre-X fraud, quite naturally, there was a great deal of examination of procedures, methods and due diligence. One of the standard – actually it would be more accurate to say universal – practices in mineral exploration is that diamond drill core is split in half on site. The core is […]
Steve and I thought it would be a great idea to play a game of “Where’s Waldo?” Except that instead of finding a cartoon character on a page in a children’s book featuring lots of cartoon characters, we’d instead try to spot the “Mann Hockey Stick” hiding in news articles and scientific reports. Our first […]
I throw this in for reasons that should be obvious. “The fallibility of methods is a valuable reminder of the importance of skepticism in science. Scientific knowledge and scientific methods, whether old or new, must be continually scrutinized for possible errors. Such skepticism can conflict with other important features of science, such as the need […]
There has been some recent chatline discussion on whether the MBH98 bristlecone pine series were “adjusted” for non-climatic factors. A number of posters seem to think that they were so “adjusted. For example, Tom Rees said on http://www.davidappell.com: on Monday, January 31st, Tom Rees said Me again… James: Mann et al 1999 seem to be […]
The Dunde (Himalayas) ice core is a staple of multiproxy studies (MBH98, Crowley and Lowery [2000], Yang et al [2002] used in Jones and Mann [2003], Jones and Mann [2004]). It was one of 4 series that contributed the only hockey-stick-ness to the results – see here . Although the core was taken over 17 […]
Jacoby is on the Hockey Team. His treeline temperature reconstruction was made by picking the 10 most "temperature-influenced" of 36 sites studied. Only these 10 sites were archived. I sought information on the other 26 through Climatic Change, the publishing journal. Jacoby refused, stating: The inquiry is not asking for the data used in the […]
Climate Audit 
M&M Feedback by Anthony Lupo
We received this comment on the research of McIntyre and McKitrick from Dr. Anthony Lupo, Professor of Atmospheric Science, University of Missouri-Columbia: I will confess that I was not aware of the details of Steve McIntyre and Ross McKitrick’s critique of the "hockey stick" but after a cursory reading of the enclosed materials it seems […]