We thank Mr. Jian Hu for his participation in a part of the early analysis and Mr. K. S. Liu who helped in most of the data processing and figure preparation. Dr. Alexis Lau provides constructive comments during BW's presentation of an early version of this manuscript. This study is supported by the Marine Meteorology Program of the Office of Naval Research. Much of the work of BW was accomplished during his visit to the City University of Hong Kong, which was supported by the Research Enhancement Scheme and Grant 7010010, both of the City University of Hong Kong. The International Pacific Research Center is sponsored in part by the Frontier Research System for Global Change.
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