Photolysis and chemistry configuration files¶
You won’t need to edit these configuration files unless you are changing the photolysis and/or chemistry mechanisms used in your GEOS-Chem Classic simulation.
Photolysis configuration files¶
These are found in the
structure. Please see Input files for FAST-JX
Chemical mechanism configuration files¶
GEOS-Chem Classic simulations use source code generated by The Kinetic PreProcessor. If you need to update the default chemistry mechanism, you will need to do the following steps:
Modify the relevant KPP configuration files (described below);
Run KPP to generate updated source code for GEOS-Chem Classic;
Compile GEOS-Chem Classic to create a new executable;
Start your GEOS-Chem Classic simulation.
Chemical mechanism configuration files are located in these folders:
Contains configuration files for the default “full-chemistry” mechanism (NOx + Ox + aerosols + Br + Cl + I).
fullchem.kpp: Main configuration file for the fullchem mechanism.
fullchem.eqn: List of species and reactions for the fullchem mechanism.
Contains configuration files for the carbon gases mechanism (CH4-CO2-CO-OCS):
carbon.kpp: Main configuration file for the carbon mechanism.
carbon.eqn: List of species and reactions for the carbon mechanism.
Contains configuration files that you can edit if you need to create a custom mechanism. We recommend that you create the custom in this folder and leave
custom.kpp: Copy of
custom.eqn: Copy of
Contains configuration files for the mercury chemistry mechanism:
Hg.kpp: Main configuration file for the Hg mechanism.
Hg.eqn: List of species and reactions for the Hg mechanism.
Please see the following references for more information about KPP: