Article Information
vol. 313 no. 5789 940-943
- Received for publication April 17, 2006
- Accepted for publication June 28, 2006
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Author Information
- 1 Scripps Institution of Oceanography, La Jolla, CA 92093, USA.
- 2 University of California, Merced, CA 95344, USA.
- 3 U.S. Geological Survey, La Jolla, CA 92093, USA.
- 4 Laboratory of Tree-Ring Research, University of Arizona, Tucson, AZ 85721, USA.
- ↵* To whom correspondence should be addressed. E-mail: awesterling{at}ucmerced.edu