Previous post (link). A follow-up post (link) If someone felt that it was necessary to detrend the bristlecone pine-based PC1 of Mann’s AD1000 network for CO2 fertilization, it’s doubtful that the initial instinct would be to coerce the data to a network of northern Canadian-Alaskan tree ring chronologies where the possibility of regional differences must […]
We’ve all had enough experience with the merry adjusters to know that just because someone “adjusts” something doesn’t necessarily mean that the adjustment makes sense. A lot of the time, the adjuster arm waves through the documentation and justification of the adjustment. Today I’m going to work through aspects of one of the most problematic […]
As I mentioned before, Hans Erren’s digitization of the Ababneh Sheep Mountain data has prompted me to pick up the MBH files to re-examine the vexed matter of Mann’s CO2 “adjustment”. Each step is fraught with problems. I’m going to try to pull something together listing the steps in the adjustment and the issues involved […]
In 2002, Lonnie Thompson drilled a 460 meter ice core in a col between Mounts Bona and Churchill in Alaska. As of October 2003, they had analyzed over 5600 samples and concluded that the core covered approximately 2500 years. A presentation was made at AGU in December 2004. The data was not discussed in IPCC […]
As most of you now know, Climate Audit has been declared co-winner of the 2007 Weblogs Award for Best Science blog (together with Bad Astronomy.) This decision was made with the agreement of all parties. Some of you have been understandably a little puzzled and seeking to interpret the matter. Here’s a bit of the […]
Hans Erren has digitized the Ababneh Sheep Mountain version and I’m going to show some extremely interesting knock-on results both on MBH98-99 and Mann and Jones 2003. I started in on Mann and Jones 2003, partly for a little variety and partly because the Sheep Mountain impact was particularly strong on this network. Before I […]
Yesterday, I posted up about “Dr Thompson’s Thermometer” and, thanks to CA readers, some interesting results emerged. A special thanks to Tim Lambert for spotting the provenance of Dr Thompson’s thermometer. The post today will repeat some of yesterday’s material, but will recast it, since we now understand the puzzle much better. In Inconvenient Truth, […]
Surprisingly, I don’t think that I’ve written previously about the Al Gore Hockey Stick. In Inconvenient Truth, after a segment discussing glaciers, Gore stands in front of a Hockey Stick graph for the last 1000 years and tells his audience that “Dr Thompson’s thermometer” had shown the inconsequentiality of the Medieval Warm Period and, [in […]
OK, the voting is over. The vote (at closing) was CA 20,242; BA 18,993, but scrutinizing is still taking place. Thanks to everyone who supported Climate Audit. Both blogs obtained an incredible number of votes today and can walk away with both satisfaction and amazement. The volume in the Science blog today seems to have […]
David Holland has a new and interesting article entiitled Bias And Concealment In The IPCC Process: The Hockey-Stick Affair And Its Implications in which the proprietor of this blog is mentioned on occasion.
Climate Audit 