We thank Michael Schlax for preparing the figures and for many helpful discussions and suggestions that greatly improved the manuscript, Dean Vickers for help with the NCEP sea level pressure analyzed in section 4, and Horst Boettger, Tony Hollingsworth, and John Henessey for their generosity and help in making the 1° × 1° × 6-h gridded operational ECMWF analyses of 10-m winds available for the analyses in section 5. We also thank David Schultz and an anonymous reviewer for their careful reading of the manuscript and constructive suggestions for improvement. The research presented in this paper was supported by Contracts 957580 and 959351 from the Jet Propulsion Laboratory funded under the NSCAT Announcement of Opportunity and NOAA Grants NA56GP0208 and NA76GP0404 from the Office of Global Programs.
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