Sincere gratitude is extended to Dr. Richard Reed for assistance during the course of this research. Thanks are also extended to Drs. Ying-Hwa Kuo, Richard Rotunno, Dale Durran, Clifford Mass, and K. K. Tung for valuable discussions and helpful comments. This research was supported by the National Science Foundation under Grant ATM9213851 and by the NCAR Advanced Study Program.
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