Esper uses 14 sites in his reconstructions. My objective is to see which ones are "active ingredients" in yielding a high 20th century relative to MWP. Today, I’ll look at the "Quebec" site on the east side of Hudson Bay, which does not solve the problem. In fact, the acknowledged authors report of a site […]
I’ve had an abstract accepted for the U.S. Climate Change Science Program (CCSP) Workshop, "Climate Science in Support of Decisionmaking," to be held November 14-16, 2005. My abstract is entitled: "More on Hockey Sticks: the Case of Jones et al [1998]".
I more or less jumped into the middle of some technical issues pertaining to Esper et al [2002], without properly describing the study. Esper et al. [2002] is one of the multiproxy studies that is included in all the spaghetti diagrams. It supposedly shows more "variability" than Mann, which is the issue that the Hockey […]
You’ve all seen my frustration with Jacoby and his doctrine of a "few good men". I haven’t posted on this, but, one thing that puzzled me was some missing inventory numbers at Polar Urals, just before the critical trees 45, 46 and 47 (upon which the "coldest year of the millennium" depends. Here’s a comment […]
Esper et al [2002] divides trees into "linear" and "nonlinear" trees depending on their growth – a classificaiton that is idiosyncratic to this publication as far as I can tell. Esper at al. [2002] provides a citation to a publication "in press" that supposedly explains this, but I can’t locate any explanation in the publication. […]
Jaemtland is one of the sites used in Esper et al [2002]. Here is some benchmark information on this site to help see its role, if any, in contributing to any hockey-stick-ness in Esper.
I’ve recently shown some histograms for site ring widths and opined that they loooked somewhat gamma-ish. Louis Hissink said that they looked log-normal to him. Louis is right for Gotland anyway.
One of the reasons that I’m going to parse through Esper’s Gotland series is the virtual absence of archived RCS chronologies, despite the fact that they are sweeping the field in multiproxy studies. Continuing on with Esper’s Gotland series First (and this is not shown by Esper) is a simple histogram of RWM and MXD […]
An important new proxy series, which is one of only 8 in Mann and Jones [2003] and one of only 11 low-frequency proxies in Moberg et al [2003], is the Chinese composite of Yang et al [2003]. Unlike the Hockey Team, Prof. Yang promptly provided the underlying data set upon request. Here are some early […]
Just as an experiment, I plotted up all the ring widths for the Gaspé and Polar Urals sites, with each core displaced a little. What I was thinking of the type of graph that you see in seismic surveys. The look is interesting, given how much weight is placed downstream on these data sets in […]
Climate Audit 