[FEATURE REQUEST] Add documentation for modifying simulation settings

[msulprizio]

Name and Institution (Required)

Name: Melissa Sulprizio
Institution: Harvard / GCST

Confirm you have reviewed the following documentation

• Contributing guidelines

New GCClassic feature or discussion

We should add a section to Read the Docs with tips for customizing your GEOS-Chem simulation. This can include things like:

• Switching between offline and online emissions: What's the difference between the two? What changes are needed in HEMCO_Config.rc and HEMCO_Diagn.rc?
• Turning on/off certain options (e.g. sea salt debromination, nitrate photolysis, Luo wet dep, etc).
• Nested-grid guide
• Add more here!

[yantosca]

Perhaps this can be added as a supplemental guide, as most of this info applies to GCHP, GCClassic, and HEMCO standalone.

[lizziel]

We can link to the general guide from the GCHP ReadTheDocs page on configuring your run.

[yantosca]

See: the new supplemental guide Customize simulations with research options. Some further minor editing may be needed.

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[lizziel]

A link to this supplemental guide is now in the stable version of GCHP ReadTheDocs: https://gchp.readthedocs.io/en/stable/geos-chem-shared-docs/supplemental-guides/customize-guide.html.

[yantosca]

@msulprizio: The nested-grid simulation guide from the Wiki has been ported to RTD & updated. See:

• https://geos-chem.readthedocs.io/en/latest/supplemental-guides/nested-grid-guide.html

I've checked off the nested-grid guide box above.