Melissa Sulprizio

Thanks for reporting this! We will switch CH4 simulations back to EDGARv7 and restore seasonality in 14.5.1.

It was recently discovered that the CH4 simulation does not conserve mass (see https://github.com/geoschem/geos-chem/issues/2409). We recently merged a fix (https://github.com/geoschem/geos-chem/pull/2428) into the 14.5.0 development branch. This version is undergoing final...

@XunZhangNJU I would refer you to [main.F90](https://github.com/geoschem/geos-chem/blob/main/Interfaces/GCClassic/main.F90) which is the driver routine for GEOS-Chem (in GCClassic). There you can see the order of operations which is currently: transport, dry deposition,...

Can you run [`isCoards`](https://hemco.readthedocs.io/en/stable/geos-chem-shared-docs/supplemental-guides/netcdf-guide.html#determining-if-a-netcdf-file-is-coards-compliant) on the file and provide the output here?

Hi @mattloman. Apologies for the delayed response. The "mirror" masks are not necessary in most cases. They were added for US, Mexico, and Canada solely for the CH4 simulation to...

Thanks for the followup @mattloman. > Individually removing the coastal emissions lines for GHGI_v2 did not prevent GHGI emissions from masking EDGARv8 emissions offshore. Do you have any other suggestions...

Thanks for the follow up. I'm glad you got it to work @mattloman.

> It looks like the amount of time for aerosol chem nearly doubled with the update "13.3.0+MEGANfix...", and it has not gone down since. Do you know what changed in...

@zelcon01 Has this issue been resolved?

This update is now marked as delivered on the [Model Development Priority page](https://wiki.seas.harvard.edu/geos-chem/index.php/GEOS-Chem_model_development_priorities#Ready_to_go_in) as well.