The two “lost” Graumlich foxtail series used in Esper et al 2002 were archived today at WDCP. Only the specific series that I had requested were archived; other series in Bunn et al 2005 were not archived – see prior discussion here. UPDATE May 17: Graumlich also archived two chronologies (Boreal -ca636.crn; Upper Wright – […]
Kultti et al. [Holocene 2006] has just been published in Holocene, showing higher medieval treeelines in northern Finland (27 deg E). This is consistent with the more northerly distribution of oak in medieval Finland reported in Hulden [2001] discussed here and adds to the growing inventory of articles both demonstrating higher medieval treelines and using […]
Gerry Browning of CIRA has contributed a post today discussing climate models. If you go to Google Scholar and search “Browning Kreiss”, you will get a list of formidable papers on numerical questions. Gerry has tried to distill the issues for a wider audience here. Recent awards include the NOAA Environmental Research Laboratories’ Outstanding Scientific […]
This is the eyewitness account by Justin Rietz of the talk given by Michael Mann at University of California at Santa Cruz on Wednesday 10th May 2006. I made it down to Santa Cruz for the Mann presentation Wednesday night. I missed the first 10 to 15 minutes (those of you who live or have […]
"Standardization" and averaging are operations that are done time after time in paleoclimate studies without much discussion of the underlying distributions. If one browses through recent statistical literature on "robust statistics", one finds much sophisticated analysis of how to handle outliers. The term "robust" is commonly used in paleoclimate, but the term as used in […]
An interesting comment on Hegerl et al by James Annan here.
This is not a topic that interests me. John A is interested in it; I’m inclined to think that Hunter’s interpretation of 19th century documents is plausible. What I am tired of is threads being hijacked for discussion of Hunter’s interpretation of sea level. So I’m providing a thread for such discussions. Here is a […]
One more attempt to extract data. This the 39th email in my correspondence with Science and I still don’t have a complete record on either Esper et al 2002 or Osborn and Briffa 2006. And people wonder why I haven’t published more. Continues from here Dear Dr Hanson, Thank you for your continued efforts in […]
Getting methodological information from Esper is a bit like dealing with Mann, a lot like dealing with Mann. It really makes me wonder whether there might be some clunker like Mann’s PC methodology lurking in Esper’s closet. Like Mann, instead of providing a comprehensive methodological desscription ideally with code as in econometrics journals, Esper would […]
There is something weird going with Esper’s delivery of data, where he delivered quite a lot of material – but left out some key data. Here ‘s the status on data – there are some puzzling methodological issues which I’l’l return to. Chronologies: Esper sent 13 of 14 chronologies in February. This was very interesting […]
Climate Audit 
Michael Mann at UC Santa Cruz
This is the eyewitness account by Justin Rietz of the talk given by Michael Mann at University of California at Santa Cruz on Wednesday 10th May 2006. I made it down to Santa Cruz for the Mann presentation Wednesday night. I missed the first 10 to 15 minutes (those of you who live or have […]