This update introduces a new prognostic closure based on a moisture budget for the convective updraft area fraction (replacing constant value 0.03). It also has the option to use a stochastic cellular automaton for enhanced organization and replaces the code under the ca_closure flag.
Solution
The prognostic updraft area fraction source and sink terms are computed in a new routine which is called from both deep and shallow convection. The area fraction is carried as a tracer, similar to tke, and is advected but not diffused in the vertical.
Description
This update introduces a new prognostic closure based on a moisture budget for the convective updraft area fraction (replacing constant value 0.03). It also has the option to use a stochastic cellular automaton for enhanced organization and replaces the code under the ca_closure flag.
Solution
The prognostic updraft area fraction source and sink terms are computed in a new routine which is called from both deep and shallow convection. The area fraction is carried as a tracer, similar to tke, and is advected but not diffused in the vertical.