The authors thank Jonathan Martin for his constructive comments on an initial draft of the manuscript. We are also grateful to Dr. Tom Schroeder, Dr. Anders Daniels, and Robert Farrell (lead forecaster, NWSFO HFO) for helpful suggestions made during the course of this work. Comments from three anonymous reviewers resulted in significant improvements in the final manuscript. This research was supported by the National Science Foundation under Grant ATM99-09011 and NOAA under Grant NA17EC1105.
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