date: Mon Mar  1 09:32:21 2004
from: Keith Briffa <k.briffa@uea.ac.uk>
subject: Re: 2004GL019658 Request to Review from Geophysical Research
to: kjohnson@agu.org

   sorry no - have too much on with a back log of reviewing and heavy teaching at moment. I
   suggest Tom Crowley as an alternative, or Tom Wigley.
   sorry again
   Keith
   At 14:09 27/02/04 +0000, you wrote:


     Dear Dr. Briffa:

     Would you be willing and available to review "Are Reconstructed Pre-Instrumental
     Hemispheric Temperatures Consistent
     With Hemispheric Instrumental Temperatures?" by Natalia Andronova, Michael Schlesinger,
     Michael Mann, submitted for possible publication in Geophysical Research Letters.

     The manuscript's abstract is:

         Reconstructions of Northern Hemisphere near-surface temperatures from
     climate 'proxy' data such as tree rings, ice cores, and corals, suggest that late
     20th century Northern Hemisphere mean warmth is anomalous in the context
     of the past centuries and likely at least the past two millennia.  Though
     substantial uncertainties in the paleoclimate reconstructions exist, these
     findings add to the evidence for a discernible human influence on climate.
     Here we use our simple climate model with six radiative-forcing
     reconstructions and climate sensitivity determined from instrumental
     temperatures over 1861 to 1997 to simulate the forced pre-instrumental
     hemispheric-average temperatures from 1500 to 1860. The model-simulated
     pre-instrumental temperatures indicate that the proxy temperature
     reconstructions are consistent with the instrumental temperatures in the
     Northern Hemisphere, but are too warm in the Southern Hemisphere.
     Lowering the pre-instrumental temperatures in the Southern Hemisphere by
     about 0.2oC would thus further strengthen the case for human-induced
     warming during the 20th century.

     If you agree to review this manuscript, I would ask for your comments within two  weeks
     from your acceptance.

     To ACCEPT, COPY and PASTE the link below:

     <[1]http://grl-submit.agu.org/cgi-bin/main.plex?el=A6K6txh4A2mTr6D4A97i67h6WflH7b8om46g7
     cQZ>


     If you are unable to review this manuscript at this time, I would appreciate any
     suggesttions of other potential reviewers who would be qualified to review this
     manuscript. (Via reply e-mail.)

     To DECLINE, COPY and PASTE the link below:

     <[2]http://grl-submit.agu.org/cgi-bin/main.plex?el=A4K7txh6A1mTr5E3A97i67h6WflH7b8om46g7
     cQZ>


     If you have any questions feel free to reply to this e-mail.

     Thank you for your consideration and support of Geophysical Research Letters.

     Sincerely,

     Saburo Miyahara
     Editor
     Geophysical Research Letters





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

   Phone: +44-1603-593909
   Fax: +44-1603-507784
   [3]http://www.cru.uea.ac.uk/cru/people/briffa[4]/

