GCHP Carbon and CO2 simulations

[Aosrain]

Your name

Longtao Wu

Your affiliation

JPL

Please provide a clear and concise description of your question or discussion topic.

I have some questions about using GCHP 14.4.0 as follows:

1. For the Carbon simulation, are restart files available at other resolutions? The file provided in the directory http://geoschemdata.wustl.edu/ExtData/GEOSCHEM_RESTARTS/v2023-01/ is only for c24.
2. For the CO2 simulation, does the CO2 simulation work in GCHP 14.4.0? If so, which restart file should I use?

[yantosca]

Thanks for writing @Aosrain.

1. We only provide a few example restart files. However, you can use the file_regrid.py program in GCPy to create a GCHP restart file from a GEOS-Chem Classic restart file. You can create a c360 restart file with:

   $ python -m gcpy.file_regrid --filein ${prefix}.nc4         \
           --dim_format_in classic                            \
           --fileout GEOSChem.Restart.20190101_0000z.c24.nc4  \
           --cs_res_out 360                                   \
           --dim_format_out checkpoint
   
   $ rm -rf conservative_*.nc

2. The CO2 simulation in GCHP I think is not the same as the CO2 simulation in GEOS-Chem Classic or the GCHP carbon simulation. I think it is only for inversions (@kbowman77 might know more).

[msulprizio]

Also tagging @hannahnesser so she can follow the discussion

[Aosrain]

Thank you.