One uncertain aspect of the theoretical results is the role of viscosity. Most studies in the severe storms community have used the inviscid equations, which yield the maximum possible cold pool depth. However, Benjamin (1968, JFM) argued that this state is "difficult, if not impossible" to achieve; instead, he argued that the maximum possible energy dissipation rate (using the viscous equations) yielded the likely maximum cold pool depths.
In order for these results to be applied to observed convective systems, more guidance is necessary. Three-dimensional large-eddy simulations are used to help solve this dilemma. Results support Benjamin's viewpoint, and suggest that inviscid solutions are not relevant to atmospheric cold pools.