Millar, Constance, Robert Westfall, Diane Delany, John King and Harry Alden, Climate As An Ecosystem Architect; Responses Of High-Elevation Conifers To Past Climate Variability.
Here’s an interesting comment from an applied statistician about principal components:
A few comments on Mann’s interview on BBC4 in which Ross McKitrick and I were discussed. Given the seeming efforts to backpedal on the role of the hockey stick in promoting Kyoto, it was interesting to hear the BBC reporter state that it was "hard to over-estimate how influential that study [MBH98] and that image […]
The calculation of temperature PC series needs to be distinguished from the calculation of tree ring PC series. Procedures for the handling of missing data in the temperature dataset were described in the MBH98 Corrigendum SI for the first time in July 2004, specifying that linear interpolation was done, but not specifying the handling of […]
Gridcell standard deviations for the MBH98 temperature dataset were archived for the first time (together with the temperature dataset) in the Corrigendum SI. Here the difference between detrended and undetrended standard deviations is examined, as well as the difference between using anomalies-new (MBH98) and HadCRU2. Link
Huldén, Lena, 2001. Terra 113, 171-8. Oak barrels and the medieval warm period in Satakunta [Finland] (Finnish) .
There is a new (December 2004) archive for Jones and Mann [2004] at WDCP here. Jones (pers. comm., July 2004) had previously sent me another version of this data. Here are some comments to save others some time in considering this archive.
I’ve been working through Jones and Mann [2004] and Mann and Jones [2003] and the following graphic caught my eye. I quickly compare it here to the version used in Jones et al. [1998] and the Mann and Jones [2003] SH reconstruction (shown in Jones and Mann [2004]). Figure 1. Replication of Figure 4 (bottom […]
I received this email today from Hendrik Tennekes, retired Director of Research, Royal Netherlands Meteorological Institute stating the following positions on Kyoto: “1. The IPCC review process is fatally flawed. 2. IPCC willfully ignores the paradigm shift created by the foremost meteorologist of the twentieth century, Edward Lorenz. 3. The behavior of Michael Mann is […]
One of the two strongest contributors to higher temperatures in Moberg’s 20th century proxies is higher incidence of subpolar glob. bulloides
Climate Audit 
A Reader's Comment about Principal Components
Here’s an interesting comment from an applied statistician about principal components: