From: Nathan Bindoff To: Susan Solomon Subject: Re: IPCC WG1 Observations ppt Date: Mon, 15 Jan 2007 23:17:30 +1100 Cc: Kevin Trenberth , Peter Lemke , jwillebrand@ifm-geomar.de, Brian Hoskins , Martin.Manning@noaa.gov, Matilde Rusticucci , Phil Jones , zhenlin chen , Melinda Marquis , Nathan Bindoff G'day Folks Just to pick up on Susan's comment below, that I am interested in, and perhaps also richard alley in using parts of Peter's presentation for the sea-level rise issues.... Hope to have a new version by the close of tomorrow. Cheers Nathan On Fri, 2007-01-12 at 11:26 -0700, Susan Solomon wrote: > Dear All, > Thanks for looking and thinking about this. > > I should clarify that some of what Peter kindly put into his > presentation may link to the sea level presentation, so may be better > moved there. We should consider that carefully. I suspect that > Peter was trying to avoid undue emphasis on Larsen B alone - because > other places are showing similar things. So we should evaluate that > too. While none of the figures themselves are explicitly shown in > Figure 4 (including the Larsen B one), the material referenced is > assessed there and Peter has carefully given the papers - so if we > believe this is needed, it could be considered. > > I do like Figure 4.13 but think it would be clearer for this audience > if it showed just the volume changes rather than the two panels. I > understand why the technical expert likes both but for this audience > perhaps just something showing the changes in glacier volume (SLR) > would be clearer. > > bests, > Susan > > > At 9:49 AM -0700 1/12/07, Kevin Trenberth wrote: > >Hi Peter > >I am a bit alarmed about all of these slides as being too complex > >and not using material from the chapters enough. > > > >For instance Fig 4.13 I found easy to understand but your first > >slide is not easy: why is Europe in blue going up in a and level in > >b when the glaciers are retreating? The reason is because this > >shows the rate of change not the result of the change isn't it? > > > >In your second slide I do like the Larsen B ice shelf picture and > >that provides a nice back drop for some explanation of the new > >bullet (which is good). But why include the 3 panels on the left? > >What do they add? > > > >I am not sure the next two are needed especially in their current > >form. None of these are in the chapter. They add too much new > >material. In my last ppt version I added some place holders taking > >some figures from the chapter as they are part of the picture that > >"global warming is unequivocal". I would urge you to include the > >first two I had, plus one of yours based on the Larsen B slide but > >with the message from the bullet added, or something like that. > > > >Regards > >Kevin > > > > > > > > > >Peter Lemke wrote: > >>Dear Colleagues, > >>please find enclosed a ppt-file addressing issues of Chapter 4. > >>Slide 1: addresses SPM-312 and 314. I suggest to accept 312. The > >>figure (4.15 from the chapter) indicates an increased rate of > >>change after about 1990. But I do not think that we have an > >>indication of an acceleration (continuously increasing rate of > >>change). > >>Slides 2,3 and 4: address the increased flow speed of tributary > >>glaciers after retreat/thinning/loss of ice shelves or floating > >>glacier tongues in Antarctica and Greenland (comments SPM-349 to > >>353) > >> > >>I did not find any critical comments concerning snow, sea ice and > >>frozen ground. Therefore I did not prepare any slides for theses > >>topics. > >>Best regards, > >>Peter > >> > >>************************************** > >>Please note my new e-mail address: > >> > >>Peter.Lemke@awi.de > >> > >>************************************** > >>Prof. Dr. Peter Lemke > >>Alfred-Wegener-Institute > >>for Polar and Marine Research > >>Postfach 120161 > >>27515 Bremerhaven > >>GERMANY > >> > >>e-mail: Peter.Lemke@awi.de > >>Phone: ++49 (0)471 - 4831 - 1751/1750 > >>FAX: ++49 (0)471 - 4831 - 1797 > >>http://www.awi.de > >>************************************** > > > >-- > >**************** > >Kevin E. Trenberth e-mail: trenbert@ucar.edu > >Climate Analysis Section, 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 >