date: Wed, 19 Sep 2007 15:25:12 -0400 from: "Zwiers,Francis [Ontario]" subject: Wengen paper to: "Phil Jones" Hi Phil I spent some time recently while travelling thinking about the Wengen paper. I was also at the CLIVAR SSG meeting in Geneva last week, and somehow was under the impression that you would be there, so I was hoping we would be able to talk about it. The difficulty I have is that I don't quite know where our work on the intercomparison of methods would fit into the paper, given that there is already quite a lot of material on the evaluation of techniques from Caspar and colleagues that comes at this from a different angle. Their conclusion seems to be that the specific MBH reconstruction is fine. On the other hand, our conclusion, and that of others I think, is that the technique itself is not so fine - it does lose variability relative to other techniques in repeated testing when evaluated in a model environment. How do we deal with the apparent incongruity between (a) a method with problems, (b) analyses that suggest that nevertheless, the particular reconstruction in question seems to be ok, and (c) evidence that indicates that there are substantial differences between the available reconstructions, with many other reconstructions suggesting a more variable past than indicated by the MBH reconstruction. So I'm just not sure where our material (perhaps a couple of pages) would fit in. The section that we might have contributed (3.3) seems to have been occupied. Cheers, Francis PS - Thorstein was at the CLIVAR meeting, and I spoke to him indicating that I hadn't forgotten about the paper, but that I was a bit confused about what my contribution might be. At least he understands that I haven't forgotten about this. PPS - We submitted our paper to Climate Dynamics on July 3, but still haven't received a decision despite the fact that three people have told me that they are reviewers of the paper - sigh. Francis Zwiers Director, Climate Research Division, Environment Canada 4905 Dufferin St., Toronto, Ont. M3H 5T4 Phone: 416 739 4767, Fax 416 739 5700