From	Jonathan T. Overpeck	Date	Fri, 17 Feb 2006 10:15:28 -0700
To	Keith Briffa, Eystein Jansen
CC	Fortunat Joos
Subject	Robust Findings/ Key Uncertainties Table V3
Hi Keith and Eystein - good additions. Thanks. You can see how I edited them in the attached. The only tought issue was Eystein's proposed key uncertaintly on ocean circulation. I think it would be awkward to have multiple abrupt change uncertainties listed (our list is already pretty long in general), so I combined your suggested bullet w/ the existing one (to include drought and other types of abrupt change: "The mechanisms of abrupt climate change (for example, in ocean circulation and drought frequency) are not well understood, nor are the key climate thresholds that, when crossed, could trigger an acceleration in regional climate change." If either of you thinks we can improve further, pls track changes edit the attached. Thanks again, Peck -- Jonathan T. Overpeck Director, Institute for the Study of Planet Earth Professor, Department of Geosciences Professor, Department of Atmospheric Sciences Mail and Fedex Address: Institute for the Study of Planet Earth 715 N. Park Ave. 2nd Floor University of Arizona Tucson, AZ 85721 direct tel: +1 520 622-9065 fax: +1 520 792-8795 http://www.geo.arizona.edu/ http://www.ispe.arizona.edu/ Attachment Converted: "c:\eudora\attach\Chap6RobustKeyTableV3.doc"