Right now there are some configurable options for the behavior of the GEOS-Chem within CESM2 model that are scattered about in code. I'll document them here as I find out more about them.
C-Preprocessor constants
MODAL_AERO and MODAL_AERO_4MODE. I think CESM-GC won't run without aerosols so I don't know why #ifdef for these are still included in chemistry.F90. Perhaps for compile of compsets without MAM4 and not with chemistry?
In chemistry.F90
debug - controls debug output, together with masterproc. Set to .true. now. I recommend possibly merging this with the option for debug output in the GEOS-Chem config yml.
ghg_chem - "use ghg chem package" ?? unknown use. Set by namelist.
In GEOS-Chem Input_Opt
Input_Opt%onlineAlbedo - true to use CLM albedo for photolysis, false to use monthly-mean albedo for HEMCO. Default/recommendation is .true.
Input_Opt%applyQtend - true to apply tendencies of water vapor (H2O) tracer to specific humidity. Default is .false. - recommendation is unknown.
Input_Opt%correctConvUTLS - true to apply photolytic correction for convective scavenging of soluble tracers. Default/recommendation is .true.. I implemented this and know that it is necessary to be in Input_Opt as it interfaces with GEOS-Chem source code.
Right now there are some configurable options for the behavior of the GEOS-Chem within CESM2 model that are scattered about in code. I'll document them here as I find out more about them.
C-Preprocessor constants
MODAL_AEROandMODAL_AERO_4MODE. I think CESM-GC won't run without aerosols so I don't know why#ifdeffor these are still included inchemistry.F90. Perhaps for compile of compsets without MAM4 and not with chemistry?In chemistry.F90
debug- controls debug output, together withmasterproc. Set to.true.now. I recommend possibly merging this with the option for debug output in the GEOS-Chem config yml.ghg_chem- "use ghg chem package" ?? unknown use. Set by namelist.In GEOS-Chem Input_Opt
Input_Opt%onlineAlbedo- true to use CLM albedo for photolysis, false to use monthly-mean albedo for HEMCO. Default/recommendation is.true.Input_Opt%applyQtend- true to apply tendencies of water vapor (H2O) tracer to specific humidity. Default is.false.- recommendation is unknown.Input_Opt%correctConvUTLS- true to apply photolytic correction for convective scavenging of soluble tracers. Default/recommendation is.true.. I implemented this and know that it is necessary to be inInput_Optas it interfaces with GEOS-Chem source code.