cc: myles , Tim Barnett , Nathan Gillett , Phil Jones , David Karoly , Jesse Kenyon , Reto Knutti , Tom Knutson , Toru Nozawa , Doug Nychka , Claudia Tebaldi , Ben Santer , Richard Smith , "Stott, Peter" , Michael Wehner , Xuebin Zhang , francis , Hans von Storch , Karl Taylor date: Wed, 23 May 2007 14:24:13 +0100 (BST) from: Dáithí Stone subject: Re: 5AR runs next iteration- reply by 26th to: Gabi Hegerl 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 > > -=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=- Acting Departmental Lecturer, AOPP, Dept. of Physics, U. of Oxford, U.K. Research Fellow, Tyndall Centre for Climate Change Research, U.K. MAIL: Dáithí 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/ -=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-