Monthly Archives: February 2005

Replication #6: Gridcell Standard Deviations for Temperature Dataset

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) .

Jones and Mann #2: New WDCP Archive

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.

Jones and Mann: Lawdome, Antarctica

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 […]

Sci-Am: Mann and the Hockey Stick

“Hagiography” according to Wordnet, at Princeton University means “a biography that idealizes or idolizes the person (especially a person who is a saint)”. Now that you know this, try reading here this Scientific American article written by David Appell about Michael Mann, creator of the Hockey Stick. I’ve quite a strong stomach, but it’s difficult […]

Hendrik Tennekes, retired Director of Research, Royal Netherlands Meteorological Institute

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 […]

Moberg #5: Arabian Sea glob. bulloides

One of the two strongest contributors to higher temperatures in Moberg’s 20th century proxies is higher incidence of subpolar glob. bulloides

Hits #2

Since the start of this blog on Feb 7, there have been nearly 27,000 hits. The biggest traffic was on Feb. 14, when there were nearly 4,000 hits (the link from the Wall Street Journal obviously caused this spike). Today is going to have the 2nd most traffic with over 2,500 hits in 20 hours […]

Replication #5: the Corrigendum Criterion

The MBH98 Corrigendum purported to explain the discrepancy of 35 series between the series listed in the original SI and the series actually used as follows: These series, all of which come from the International Tree Ring Data Bank (ITRDB), met all the tests used for screening of the ITRDB data used in Mann et […]

More Commentary #5: realclimate

Gavin Schmidt and Caspar Amman of realclimate have written a "Dummies’ Guide" giving their take on the dispute: Due to popular demand, we have put together a ‘dummies guide’ which tries to describe what the actual issues are in the latest controversy, in language even our parents might understand.Link I’ll comment more on this later, […]