This research was supported by the National Science Foundation Grant ATM 9979494. The authors thank Amy Haase, Socorro Medina, Stacy Brodzik, Dave Ovens, Brian Colle, Dale Durran, and Jon Locatelli for their valuable contributions to this work. We extend additional thanks to the P3 flight crews who provided the critical observations that made this study possible. The comments of two anonymous reviewers enhanced the quality of the manuscript.
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