Monthly Archives: November 2006

The Juckes Proxies

I thought that some of you would be interested in a plot of Juckes’ Union proxies against gridcell temperatures. I’ll start off by simply showing a plot during the 1856-1980 calibration period (both scaled over 1856-1980), as below, followed by a plot of the residuals. The proxies are arranged according to longitude from California going […]

Weblog Update: November 2006

I thought I’d give a brief overview on what’s happening with the weblog, the changes that were made, the problems encountered/fixed and the future of Climate Audit. Statistics Figures for the month of November show a big jump from all previous months. The number of hits climbed steeply to around 1.7 million.


One point that Wahl and Ammann and ourselves agree on, but which Juckes appears to contest, is that principal components methodologies applied to AD1400 MBH98 networks result in upweighting or downweighting of bristlecones. Their Scenario 6 shows reconstruction results without bristlecones for covariance, correlation and Mannian PCs. I have no dispute with these calculations although […]

Replicating Juckes' CVM

Here are some notes on my attempts to replicate Juckes’ CVM calculations, together with a script. I can replicate some reconstructions very closely – e.g. Esper and Jones within less than a tenth of a degree of the archived CVM, but other replications,including the Union reconstruction, are not as close. In each case, I checked […]

Juckes cites Wahl and Ammann

One of the really annoying things about Wahl and Ammann was their failure to cite our prior analysis of various MBH permutations and, then, having failed to cite these prior analyses, reproaching us for supposedly “omitting” these analyses. For example, in MM05 (EE) we discussed the relative impact of using 2 or 5 covariance PC2 […]

Juckes and Covariance PCs

Juckes and the Euro Team spent a lot of time on the topic of MM normalization, stating as follows (continuing the academic check kiting initiated by claims made in Wahl and Ammann (Clim Chq 2006) using the rejected Ammann and Wahl (GRL 2006)): Wahl and Ammann (2006) ascribe the difference between MM2005 and MBH1998 to […]

Juckes and the Pea under the Thimble (#1)

Juckes has much to say about several MM articles, none of it favorable and little of it accurate. Juckes, like the rest of the Team, seldom quotes our articles – instead, he typically paraphrases what we said, often creating a straw man, which he prefers to deal with. It’s a wearisome task disentangling the many […]

Willis on “Getting authors to respond to questions”

[JohnA: For reasons that I don’t understand, posting comments became nearly impossible for some people for a short while. This comment from Willis I thought should be captured for future reference so I made it into a post.] Willis Eschenbach writes: Well, on the 4th of this month I posted a couple of questions on […]

Gore Gored: Monckton replies – Round 2

This is a continuation of the original post for comments.

Gore Gored: Monckton replies

Chris Monckton has replied to Al Gore’s characterization of his articles here. The relevant section on the Hockey Stick is on page 11. I know that Steve does not agree with all of Monckton’s analysis, so can we take that as read?