Is there a CESM2-MOSAIC version compatible with the MOZART-TS2 chemistry mechanism

Qi Ran

Qi Ran
New Member
What version of the code are you using?
I am using a CESM2.2-MOSAIC sandbox (Use MOSAIC scheme in CESM/CAM-chem - CAM-Chem - wiki.ucar.edu)

Describe your problem or question:
I created an FCHIST case using the CESM2.2-MOSAIC. By default, this sandbox is configured with the TS1.1 gas-phase chemistry mechanism. However, for my current research project, I need to use the more comprehensive MOZART-TS2 chemistry mechanism while keeping the MOSAIC/simpleVBS aerosol scheme active.

Since -usr_mech_infile takes precedence and the available .in file in my sandbox is built for TS1.1, simply changing the -chem option to trop_strat_mam4_ts2 results in initialization errors (e.g., missing biogenic emissions like APIN which are introduced in TS2).

I would like to ask:
  1. Is there an existing CESM2-MOSAIC branch or a pre-configured .in mechanism file (e.g., TS2_simpleVBS_MOSAIC.in) that has already paired the TS2 gas-phase chemistry with the MOSAIC/VBS scheme?
  2. If not, are there any specific guidelines, reference repositories, or common pitfalls I should be aware of if I attempt to manually merge the standard trop_strat_mam4_ts2.in with the MOSAIC/VBS species and reactions?
Any advice, documentation, or shared code branches would be greatly appreciated!

Thank you very much for your time and help.
 
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