noresm3_0_025_cam6_4_121: Re-introduce the Bennartz mg diagnostics

[Ovewh]

Re-introduction of few diagnostics in the microphysics

Some diagnostics in the microphysics did not make it through the pumas microphysics update. This PR re-introduces those diagnostics (the Bennartz mg diagnostics CCN_B, ACTNL_B and FCTL_B).

Contributors: @Ovewh

Reviewers: @gold2718 @oyvindseland

Changes made to build system: None

Changes made to the namelist: None

Changes to the defaults for the boundary datasets: None

Substantial timing or memory changes: None

Non-answer changing

[oyvindseland]

The coding in NorESM2 for these variables may not have been done properly. The output fields will pass a monthly restart test, but does it also pass a daily restart test for these fields?

[gold2718]

Calculations need some work.

[gold2718]

The coding in NorESM2 for these variables may not have been done properly. The output fields will pass a monthly restart test, but does it also pass a daily restart test for these fields?

We can find out for sure when we run tests (if we add history_amwg = .true. to at least one test which I think we should) but I do not see why these fields should not pass once the coding errors are fixed.

[oyvindseland]

I am afraid that will have to be in early January so at the moment it can be added to aerocom if it is expensive

[gold2718]

The changes look good, thanks.
I would like one more change to move computation into the hist_field_active logic.

[gold2718]

This looks good now, thanks for the cleanup.

[gold2718]

Tagged as noresm3_0_025_cam6_4_121