date: Wed Apr 30 14:51:13 2008
from: Keith Briffa <k.briffa@uea.ac.uk>
subject: Re: Hansen's latest
to: "Rachel Warren" <r.warren@uea.ac.uk>

   Rachel
   truth is that I HAVE NOT read this - and will try to get to it - but loaded down for a few
   days with marking.
   At very quick glance I am dubious
   Keith
   At 14:31 30/04/2008, you wrote:

     Keith
     Have you read the attached (Hansen's latest? - downloaded from his website)?
     I'd be interested to know if you agree with his palaeoclimatic analysis or not.
     This analysis uses palaeoclimatic data and fairly simple calculations
     to show that
     long term climate sensitivity is 6C (as opposed to short term which he agrees is
     around 3C).
     It seems well reasoned to me but then I am not an expert on palaeoclimate ...
     Rachel
     --
     Dr Rachel Warren
     Senior Research Fellow
     Tyndall Centre
     Zuckermann Institute
     University of East Anglia
     Norwich NR4 7TJ
     Telephone 01603 593912
     Fax 01603 593901
     E-mail r.warren@uea.ac.uk
     Content-Type: application/pdf;
      name="TargetCO2, Where should humanity aim_20080331.pdf"
     X-Attachment-Id: f_ffny3tft0
     Content-Disposition: attachment;
      filename="TargetCO2, Where should humanity aim_20080331.pdf"

   --
   Professor Keith Briffa,
   Climatic Research Unit
   University of East Anglia
   Norwich, NR4 7TJ, U.K.

   Phone: +44-1603-593909
   Fax: +44-1603-507784
   [1]http://www.cru.uea.ac.uk/cru/people/briffa/

