EAMxx: (MAM4xx) Adds gas dry deposition call in aerosol microphysics

[overfelt]

An existing EAMxx interface (eamxx_mam_microphysics_process_interface.cpp) is modified to include the invocation of the dry deposition for gases.

Since the CMake option, SCREAM_ENABLE_MAM, is always ON, these codes are always compiled with the EAMxx codebase, but this interface can be turned off/on using the namelist flags.

[non-BFB] for EAMxx cases

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Output variables

This process computes dry deposition fluxes (dflx) that are used to update constituent_fluxes.

Testing

We have existing tests for this interface, so we didn't add any new tests. We have a suite of validation tests in the MAM4xx repo to validate sethet process

The atmchange command to invoke this process in a CIME simulation is:

./atmchange physics::atm_procs_list="mac_aero_mic,rrtmgp,mam4_aero_microphys

To set up a test with the above configuration, use the following commands:

cd cime/scripts
./create_test SMS_D_P32x1_Ln5.ne4pg2_oQU480.F2010-SCREAMv1-MPASSI.<machine>_<compiler>.scream-mam4xx-aero_microphysics -t <test id> -p <project id>

Where,
<machine> is the machine name
<compiler> is the compiler to use on the machine
<test id >is a unique string test identifier
<project id> is the allocation project to charge

scream-mam4xx-aero_microphysics is the test modifier that adds mam4_aero_microphys to the atm_procs_list process list and increases the number of tracers to 41.

For ne30pg2 grid, use the following command:

./create_test SMS_D_P32x1.ne30pg2_oECv.F2010-SCREAMv1-MPASSI.<machine>_<compiler>.scream-mam4xx-aero_microphysics -t <test id> -p <project id> 

New input data

No new input data

Figures from model analysis

Coming soon

Standalone Test Timings (Compy):

We will upload the timings once the PR is reviewed and approved

[rljacob]

Is this PR BFB or not?

[overfelt]

@rljacob , No these changes are not expected to be bit-for-bit as dry-deposition was not really working correctly before. @singhbalwinder is making quite a few changes to fix it.