date: Tue, 08 Feb 2005 09:27:37 +0000
from: Tim Osborn <t.osborn@uea.ac.uk>
subject: Re: FW: SCEPTICS
to: k.briffa@uea.ac.uk

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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


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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"
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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
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