Moberg et al. [2005] was published today in Nature. It is an almost unique study because none of the authors are on the Hockey Team (although Moberg has co-authored with Jones in the past) and is virtually the first somewhat independent multiproxy study. The figures in the study are small-scale and the instrumental record is […]
We have focused considerable attention on the role of the Gaspé series in MBH98. While we alluded previously in MM05 (E&E) to information in our possession that the updated (1991) version of the series differed from the 1982 version and to our frustration that the updated version remains unarchived (see Jacoby #1) , we are […]
I’ve heard rumors that a new reconstruction from Moberg et al. is about to be published in Nature and it looks like it’s going to be more bad news for Mann et al. Here is a clip from a PDF posted up by Moberg in October 2004, but obviously not incorporated into the spaghetti diagrams […]
The bristlecone pine "adjustment" for CO2 fertilization in MBH99, while genuflecting to Graybill and Idso [1993], is completely different as seen in Figure 1 below.
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.
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 […]
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 […]
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 […]