From: Jonathan Overpeck To: Keith Briffa , t.osborn@uea.ac.uk Subject: Comments on 6.3.2.1 Date: Wed, 12 Jan 2005 22:58:01 -0700 Cc: rahmstorf@pik-potsdam.de, drind@giss.nasa.gov, Eystein Jansen , joos Keith, Tim (and friends- please read below and provide your comments THURS too) - just finished reading your draft and my primary reaction is one of great relief and admiration. You've done an excellent job. I'm sure things will look different in the end, but for the ZOD, this lays things out just fine. That said, here are comments. More are in the attached draft w/ track changes 1. still need to see the figs - ok to state what still has to be done (as you have) 2. regarding the ocean section, I think some of it should stay in - both as a placeholder for other relevant stuff, and because it is important. See attached. It would be good if EYSTEIN would look at my comments for this section and provide the needed minor help - we need the punchline/bullet - how does the 20th century compare with the previous part of the record (you say it shows the warming, but then don't go the next step. 3. THIS IS THE ONLY COMMENT THAT WILL TAKE MORE THAN A FEW MINUTES - can we get THE word on the MWP in before hydro? Heck, I'd even support a small (smaller than the other ones) box. There is lots of debate about the MWP,. and we need to weigh in. Was it global, hemispheric, regional only (e.g., Europe and N. Atlantic - can then refer back to it in ocean section)? Was it one synchronous warm event or a bunch of shorter regionally asynchronous events? Warmer than 20th? Late 20th? (think you answered this, but need to nail it!). Cite the cast of papers you've already discussed, plus Bradley et al Science 03. 4. what you say is balanced, and it's ok to note in the text where you anticipate serious improvement w/ more published paper support - e.g., Esper (you're doing a paper on this, no?) and ECHO-G. 5. have to have boreholes on Figs too - that would be more important now than uncertainty estimates around all recons - the latter is harder, but in any case, say what you intend to add after ZOD. 6. see text - minor edits 7. I can make draft bullets from what you sent Guys - it was worth the wait. Hope you can take advantage of the relatively minor edits required and help some with other sections as asked for. -- 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/