cc: Susan Solomon , Martin.Manning@noaa.gov, Matilde Rusticucci , Phil Jones , Peter Lemke , Jurgen Willebrand , Nathan Bindoff , zhenlin chen , Melinda Marquis date: Tue, 09 Jan 2007 08:54:58 -0700 from: Kevin Trenberth subject: Re: IPCC WG1 Observations Conference Call to: Brian Hoskins Hi Brian Do you need the first part? Are you rewriting the headline on SPM p 5 lines 35-37 or are you adding an extra bullet on circulation? I thought we agreed on the latter, but your piece seems more like the former. If we left the headline alone and added: * Changes in large-scale atmospheric circulation are apparent and, in particular, the mid-latitude westerly winds have shifted polewards and strengthened, altering storm tracks. would be an alternative approach. I think it is helpful to mention storm tracks but not be specific about how they have changed. What do you think? Kevin Brian Hoskins wrote: Susan Headline 2 I suggest the following: At continental or ocean basin scale, numerous changes in climate have been observed. Mid-latitude westerly winds (and the associated storms) have shifted polewards and strengthened. Other climate changes include precipitation,..... I have taken the suggestion form SPM_327 to reverse the order of the first sentence. The westerly winds sentence is essentially that in a headline in the TS. I should much prefer not to include the bracketed itallicised phrase on storms. The evidence is less strong. There is some evidence for reduced numbers of storms also but no room to say that. It was not headlined in the chapter or the TS. Best wishes Brian -- **************** Kevin E. Trenberth e-mail: [1]trenbert@ucar.edu Climate Analysis Section, [2]www.cgd.ucar.edu/cas/trenbert.html NCAR P. O. Box 3000, (303) 497 1318 Boulder, CO 80307 (303) 497 1333 (fax) Street address: 1850 Table Mesa Drive, Boulder, CO 80305