The authors appreciate critical feedback from Dr. Paul Reasor and Dr. Paul Ruscher on prior versions of this research for the first author’s M.S. thesis at The Florida State University. The authors are grateful to reviews of this manuscript from Dr. Marc Hidalgo and Dr. Tim Nobis from the Air Force Weather Agency and three anonymous reviewers. The first author would like to especially thank his lovely wife, Mrs. Rebecca Creighton, for her time, emotional support, and grammatical expertise. Most figures in this manuscript were produced using the GrADS software package, provided by the Center for Ocean–Land–Atmosphere Studies/Institute of Global Environment and Society. This research was partially supported by NASA Genesis and Rapid Intensification Processes (GRIP) Grant NNX09AC43G.
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Higher-resolution sensitivity experiments confirm that this grid spacing adequately captures the storm-scale phenomena of interest. For more information on the effect of grid spacing on developing convection in a cloud resolving model, refer to Petch (2006).
The Rayleigh damping coefficient used for these experiments is 0.2 s−1.
Note that i and j are centered about the point of interest requiring that N be an integer multiple of 2.
This also is likely a by-product of calculating circulation over a circle that is fixed to the center of the domain. If the circle were allowed to follow the centroid of the vortex, the rapid fluctuations seen in the advection term would likely be much more muted. Such a methodology for calculating circulation would better allow meaning to be assigned to the apparent anticorrelation between the radial advection term and the divergence terms, but is outside the scope of this study.