The authors thank Zhichang Guo for the original design of the program used in calculating the correlations with the SOI, Sheng-Hung Wang for EOF assistance, and Jorge Carrasco for supplying the 500-hPa zonal wind data for Punta Arenas. Comments from two anonymous reviewers helped to clarify and strengthen the manuscript. Discussions with David Thompson are appreciated and also helped to improve the paper. This research was funded in part by NSF Grant OPP-0337948 and UCAR Subcontract SO1-22961.
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