The authors thank James Done (NCAR) for processing the GFDL analysis for ARW and conducting forecasts with the analysis for Hurricane Humberto (2007). Comments on the early manuscript by Jordan Powers, Zhiquan Liu, and Yongrun Guo (NCAR) are greatly appreciated. Bobbie Weaver helped to edit the manuscript. This study has been supported by NOAA Grant 05111076 and the National Natural Science Foundation of China (Grant 40828005).
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