PUMAS Microphysics

[dustinswales]

Description

Implement new scheme for cloud-microphysics, Parameterization for Unified Microphysics Across Scales (PUMAS), within the CCPP Physics.

PUMAS is a new version of an existing cloud-microphysics scheme within the CCPP, Morrison-Gettelman, so (hopefully) this implementation can build upon much of the existing infrastructure.

Solution

• PUMAS will need new metadata files describing the PUMAS CCPP interface, and any type definitions (e.g. PUMAS proc_rates_type). Also, the main PUMAS routine name will need to be changed from micro_pumas_tend to micro_pumas_run.
• CCPP Physics will bring the PUMAS codebase in as a new submodule.
• Modify/Create MG/PUMAS _pre and _post routines. The existing MG _pre and _post routines could be modified and renamed for use with PUMAS.

[dustinswales]

FYI @nusbaume @lisa-bengtsson @andrewgettelman