We thank Dr. Christopher W. Landsea for valuable comments and suggestions that led to improvements of the manuscript. This research was jointly supported by the Typhoon Research Project (2009CB421503) of the National Basic Research Program (the 973 Program) of China, the National Natural Science Foundation of China (NSFC Grant 41275093), the Social Commonweal Research Program of the Ministry of Science and Technology of the People's Republic of China (GYHY200806009), and the Priority Academic Program Development of Jiangsu Higher Education Institutions (PAPD). Support for the Twentieth Century Reanalysis Project dataset is provided by the U.S. Department of Energy, Office of Science Innovative and Novel Computational Impact on Theory and Experiment (DOE INCITE) program, the Office of Biological and Environmental Research (BER), and by the National Oceanic and Atmospheric Administration Climate Program Office.
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