date: Tue May 17 15:33:15 2005
from: Tim Osborn <t.osborn@uea.ac.uk>
subject: Re: Nature Review Request - manuscript 2005-05-05186  
to: m.hutchinson@nature.com

   Since the author, Nathan Gillett, is a close colleague of mine (just a couple of offices
   down the corridor), I don't think it would be appropriate for me to review this manuscript.
   Regards
   Tim
   At 14:44 16/05/2005, you wrote:

     Dear Dr Osborn

     I was wondering whether you would be willing to review a short manuscript for the Brief
     Communications section of Nature. The manuscript comes from Nathan Gillettand is
     entitled "Inconsistency between simulated and observed Northern Hemisphere circulation
     changes". Its first paragraph is pasted below.
     Is this a paper that you would be able to review for us within 14 days? If so, please
     let me know as soon as possible, and I will send instructions to you on how to access
     the manuscript. Failing that, it would be helpful to us if you could suggest alternative
     referees.
     Many thanks in advance for your help and I look forward to hearing from you.
     Yours sincerely
     Rosalind Cotter
     Editor, Brief Communications


     Inconsistency between simulated and observed Northern Hemisphere circulation
     changes

     Nathan Gillett

     In recent decades winter sea level pressure has decreased over
     the Arctic and increased in the Northern Hemisphere
     subtropics, a change associated with 50% of the observed
     Eurasian winter warming over the past thirty years, 60% of the
     rainfall increase in Scotland, and 60% of the rainfall
     decrease in Spain. This trend has previously been shown to be
     inconsistent with the simulated response to greenhouse gas and
     sulphate aerosol changes, but other climate influences such as
     ozone depletion have been suggested as a possible reason for
     the discrepancy. Here, for the first time, we compare observed
     Northern Hemisphere sea level pressure trends with those
     simulated in response to all the major human and natural
     climate influences in eight state-of-the-art coupled climate
     models over the past 50 years, and find that the observed
     trend is inconsistent both with simulated internal variability
     and with the simulated response to combined human and natural
     climate influences.

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