This paper is based upon a presentation given at the 2006 Chapman Conference on Jets and Annular Structures in Geophysical Fluids in Savannah, Georgia. The study is supported by the NSF Climate and Large-Scale Dynamics Program under Grant ATM-0456157 (under the U.S. CLIVAR Program) and NASA’s Living with a Star Targeted Research and Technology Program under Grant NAG5-13492. The NCEP-NCAR reanalyses come from the NOAA Climate Diagnostics Center from their Web site at http://www.cdc.noaa.gov/. Finally, we would like to thank the reviewers for their helpful guidance during the peer review process.
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