date: Tue, 08 Feb 2005 09:27:37 +0000 from: Tim Osborn subject: Re: FW: SCEPTICS to: k.briffa@uea.ac.uk Keith - here's my reply to Chris Folland (cc'd to you but with a typo in your email address, so it got returned). - Tim Chris, I've attached electronic reprints of the two relevant papers. In both cases the figures are rather low resolution. For the Briffa et al. paper I've also included better resolution copies of the 3 colour plates as separate files. At 21:43 07/02/2005, Folland, Chris wrote: >The original Briffa graph (published in Quaternary Science Reviews in 2000) >also reaches peak values in the 11th century, but this is not visible in the >IPCC presentation since the first 400 years were left out (why?). Important point! The real reference for the Briffa curve shown in the IPCC TAR is Briffa et al. (J. Geophys. Res., 2001 - the attached reprint) and goes back only to 1400, as shown in the TAR. Although this paper was published in January 2001, I think it was too late to put in the final reference including page numbers. I don't know how it got attributed to Briffa (Quaternary Science Reviews, 2000) because that shows a completely different reconstruction which does go back to 1000, but which was based on tree-ring width not tree-ring density and from only three sites in northern Eurasia. If you also want a copy of the QSR 2000 paper, then you'll need to ask Keith because I don't have an electronic copy. Best wishes Tim Attachment Converted: "c:\eudora\attach\Plate1_Briffa2001.pdf" Attachment Converted: "c:\eudora\attach\Plate2_Briffa2001.pdf" Attachment Converted: "c:\eudora\attach\Plate3_Briffa2001.pdf" Attachment Converted: "c:\eudora\attach\Briffa2001_lowres_plates.pdf" Attachment Converted: "c:\eudora\attach\jones1998recon_holocene.pdf" Dr Timothy J Osborn Climatic Research Unit School of Environmental Sciences, University of East Anglia Norwich NR4 7TJ, UK e-mail: t.osborn@uea.ac.uk phone: +44 1603 592089 fax: +44 1603 507784 web: http://www.cru.uea.ac.uk/~timo/ sunclock: http://www.cru.uea.ac.uk/~timo/sunclock.htm