We thank Drs. Steve Klein, Leo Donner, Steve Garner, Chris Bretherton, and Brian Mapes for useful discussions, and two anonymous reviewers for helpful suggestions. Ming Zhao is supported under Award NA17RJ2612 from the National Oceanic and Atmospheric Administration, U.S. Department of Commerce. The findings are those of the authors and do not necessarily reflect the views of the National Oceanic and Atmospheric Administration, or the U.S. Department of Commerce.
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