User's Guide: How to calculate above/belowground biomass

[samsrabin]

What sort(s) of documentation issue is this?

• Something is missing.
• Something is (or might be) incorrect or outdated.
• Something is confusing.
• Something is broken.

What part(s) of the documentation does this concern?

• Technical Note (science and design of the model)
• User's Guide (using the model and related tools)
• Somewhere else (e.g., README file, tool help text, or code comment): Please specify
• I don't know

Describe the issue

A common question on the DiscussCESM forums is how to calculate aboveground or belowground C or N, since we don't have output variables corresponding to those. We should have standard instructions in the User's Guide.

[samsrabin]

@adrifoster has a spreadsheet she used for TRENDY that might have this information.