Monthly Archives: May 2007

Why does CRU have a confidentiality agreement with Germany?

Today we ponder why many National Meteorological Services (NMSs), including the NMS of Germany, have provided data to CRU under confidentiality agreements which supposedly prevent Phil Jones from disclosing the identity of these stations.

Tom Karl’s Station Adjustments

The USHCN Station History Adjustment procedure is credited to Tom Karl in Karl and Williams 1987. Karl has been very prominent in the IPCC movement. That’s not to say that the potential adjustment is wrong or unjustified, but that the adjustment needs to be scrutinized with the same care as one would scrutinize an adjustment […]

Some Northern California Station Plots

I’ve plotted up some USHCN station information for the 18 sites closest to Susanville (why Susanville – it’s one of the Anthony Watts- Russ Steele sites that they happened to post on lately.) I’ve been reading Karl and Williams 1987 which sort of describes the USHCN Station History Adjustment method. I’ll talk about Karl and […]

Mann's New Divergence "Theory": A Smoothing Artifact

Over at realclimate, Mann has advocated a new “explanation” of the Divergence Problem raised by one of their readers in connection with IPCC AR4 Figure 6.10. Mann says that there is no Divergence Problem; he blames the reader for failing understand boundary constraints in smoothed series. Raising the Divergence Problem at realclimate was so blasphemous […]

Server upgrade is coming soon

Due to the loading on the current dedicated server causing regular server crashes, I have decided to move CA and other hosted blogs to a new server with twice as much memory (2GB) and utilizing a proper server-oriented Linux rather than using a general purpose Linux. It demonstrates that if you’re going to do serious […]

Adjusting for the "Rural Cooling Effect"

I spent quite a bit of time today ploughing through USHCN station data, doing a lot of grunt work. For example, I spent time aking a concordance of 1221 USHCN identification numbers with GHCN id numbers (they aren’t the same) and I haven’t seen a concordance anywhere. Most of it could be done through matching […]

More ISO-2000 Weather Stations from Jones and Hansen

Anthony Watts writes: I decided I’d drop some more fun with entropy your way. Here is the USHCN station in Redding, CA # 425725920010 now operated by the US Forest Service at their HQ located at the Redding Airport it used to be operated by the NWS, but that WSFO closed in the mid 90’s. […]

New Light on Old Fudge

One of my first blog postings was on Briffa’s very first fudging (2011 update: the “Briffa bodge”) of a temperature reconstruction – his adjustment of the Tornetrask reconstruction – a reconstruction that is used in virtually every study. This was one of the first encounters with the Divergence Problem. Tornetrask MXD went down in the […]

Quality Control – Jones and Hansen Style

Anthony Watts has an excellent post showing the calibre of the quality control carried out by Phil Jones and Jim Hansen and the quality of Phil Jones’ “proof” that the “overall urban bias …is greater than 0.05 deg in the 20th century”. Marysville CA (425745000030), GISS population 12,000, is in the USHCN network and is […]

The Mysterious Taylor Dome Borehole

Last year, one of the first things that puzzled me about the NAS panel report was the basis for their conclusion that there was no MWP in Antarctica. At the press conference, at about minute 60, North said: there is evidence of warmth in the record in the MWP. But as Bradley and Diaz a […]