Update: See continued discussion here. I’m working up some material for the AGU convention and re-visited some points in Crowley and Lowery [2000] which I’d not been able to figure out before. (One of Bruce McCullough’s strongest arguments for providing source code is that it reduces the cost of replication studies, since the replicator does […]
We’ve obviously spent quite a bit of time analyzing the effect of the weird and incorrect MBH principal components method on red noise series. We’ve not argued that doing the principal components calculation correctly necessarily results in a meaningful index, only that doing it incorrectly cannot result in a meaningful index. One thing that I […]
The U.S. Climate Change Science Program Workshop was the first such workshop that I’d been to. Sometimes the anthropology is as interesting as anything else.
I will write up some notes on the U.S. Climate Change Science Workshop, but I’d like to post up some information on a couple of interesting reports in the past few days on archaeological discoveries in a receding glacier on a high Swiss pass towards Italy, sent in by a reader. Glacier retreat in the […]
Roger Pielke requested op ed’s from Mann and myself as to why anyone should care about the hockey stick. Mann refused to participate. I wrote one, Ross drafted a version. Because I’ve been travelling, I didn’t have time to try to reconcile our views, so we each send in versions which can be read Ross […]
I apologize for the interruption. The blog hit its storage maximum and it took a while to diagnose that this was causing the problem . There were then problems restoring which I won’t elaborate now, all of which was exacerbated by slow turn times from the hosting company. Some comments may not have survived the […]
A couple of months ago, after getting nowhere with Moberg on same peculiarities in some data sets (see right category Moberg et al ), I filed a Materials Complaint to Nature discussed here. There have been some developments on this. Readers may recall that, on a previous occasion, in connection with MBH98, Ross and I […]
A Concern: Ken Fritsch makes the following comment: While your efforts to avoid the implication of censoring of opposing views should be commended, I am not a little distracted by the noise levels that I find come from (a) personal debates that frequently do not add to the knowledge base of the specific topic at […]
Jones et al. [1998] makes the reasonable policy that proxies should be validated against gridcell temperatures as evidence that they are temperature proxies, noting that this is not always done. This policy is endorsed in Jones and Mann [2004], who note that not all multiproxy studies had observed this policy, presumably including MBH98, which included […]
I mentioned here that I would be presenting at a poster session at the U.S. Climate Change Workshop (Nov 14 evening, Crystal Gateway Marriott, Arlington Virginia). Poster pdf’s are supposed to be in tomorrow. Here’s a draft. I’d appreciate any comments. Obviously many of the points are ones that readers of this blog are familiar […]
Climate Audit 
Op Eds at Pielke
Roger Pielke requested op ed’s from Mann and myself as to why anyone should care about the hockey stick. Mann refused to participate. I wrote one, Ross drafted a version. Because I’ve been travelling, I didn’t have time to try to reconcile our views, so we each send in versions which can be read Ross […]