Monday, December 19, 2011


From: Jonathan Overpeck <>
To: Keith Briffa <>, Eystein Jansen <>
Subject: Robust Findings/ Key Uncertainties Table V3
Date: Fri, 17 Feb 2006 10:15:28 -0700
Cc: joos <>

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

Attachment Converted: "c:\eudora\attach\Chap6RobustKeyTableV3.doc"

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