cc: myles <m.allen1@physics.ox.ac.uk>, Tim Barnett <tbarnett-ul@ucsd.edu>,  Nathan Gillett <n.gillett@uea.ac.uk>, Phil Jones <p.jones@uea.ac.uk>,  David Karoly <dkaroly@rossby.metr.ou.edu>, Jesse Kenyon <kenyon@duke.edu>,  Reto Knutti <knutti@climate.unibe.ch>, Tom Knutson <Tom.Knutson@noaa.gov>,  Toru Nozawa <nozawa@nies.go.jp>, Doug Nychka <nychka@cgd.ucar.edu>,  Claudia Tebaldi <tebaldi@rap.ucar.edu>, Ben Santer <santer1@llnl.gov>,  Richard Smith <rls@email.unc.edu>,  "Stott, Peter" <peter.stott@metoffice.gov.uk>,  Michael Wehner <MFWehner@lbl.gov>, Xuebin Zhang <Xuebin.Zhang@ec.gc.ca>,  francis <francis.zwiers@ec.gc.ca>, Hans von Storch <hvonstorch@web.de>,  Karl Taylor <taylor13@llnl.gov>
date: Wed, 23 May 2007 14:24:13 +0100 (BST)
from: Dith Stone <stoned@atm.ox.ac.uk>
subject: Re: 5AR runs next iteration- reply by 26th
to: Gabi Hegerl <hegerl@duke.edu>

Gabi and co.,
Re the question to me concerning control simulations, I think these are 
needed to check against drifting models.  It certainly was necessary this 
time around;  maybe in several years all the modelling groups will have 
overcome this but I would feel more comfortable knowing the information 
would be there.  The drift can clearly be quite influential if you are 
looking for a linear trend response.

Re forcing data, for volcanic forcing it would have to be at least 
monthly, I'd say.

Cheers,
DA

On Fri, 18 May 2007, Gabi Hegerl wrote:

> Hi all.
> 
>  From your comments, I assembled a word file with our suggestions on the 
> 5AR run
> proposal, but I am not sure
> I caught it all completely. Also, I had a chat with Jerry yesterday, and 
> he said getting
> suggestions of what should be stored will be useful at this point.
> My plan is to communicate this with Jerry when we are done with it, and 
> then propose
> it at the WGCM meeting.
> 
> I drew a strawman list of what I could think of in 3 minutes, and am 
> asking you to
> add to it. Its all in track changes, so dont hesitate to go wild (but 
> please keep in mind that
> we need to restrict data requests to something you think you will work 
> with in the next
> years, since it is a fair amount of effort from the modelling centres to 
> haul the data over
> etc, and the more we request, the more likely it is that only few 
> ensemble members etc
> get sent...)
> 
> Karl, I am cc;ing you since your perspective would be useful
> 
> Gabi
> 
> -- 
> ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
> Gabriele Hegerl 
> Division of Earth and Ocean Sciences, 
> Nicholas School for the Environment and Earth Sciences,
> Box 90227
> Duke University, Durham NC 27708
> Ph: 919 684 6167, fax 684 5833  
> email: hegerl@duke.edu, http://www.env.duke.edu/faculty/bios/hegerl.html
> 
> 

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Acting Departmental Lecturer, AOPP, Dept. of Physics, U. of Oxford, U.K.
Research Fellow, Tyndall Centre for Climate Change Research, U.K.
MAIL:  Dith Stone, AOPP, Department of Physics, University of Oxford,
       Clarendon Laboratory, Parks Road, Oxford OX1 3PU, United Kingdom
TELEPHONE:  44-1865-272342          FACSIMILE:  44-1865-272923
E-MAIL:  stoned@atm.ox.ac.uk
WEBPAGE:  http://www.atm.ox.ac.uk/user/stoned/
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