CESM3.0a Driver Namelist Definitions
Model Version: 3.0a
Change CESM Version
Component Tag:
cmeps1.1.48
HTML Created:
2026-07-02
| Variable | Namelist Group | Category | Entry Type | Valid Values | Possible Default Values | Description and out-of-the-box Default |
|---|---|---|---|---|---|---|
| carma_fields | carma_inparm | carma | char | ['any char'] |
List of fluxes needed by the CARMA model, from CLM to CAM.
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| dep_data_file | drydep_inparm | drv_flds_in | char | ['any char'] |
Full pathname of file containing gas phase deposition data including effective
Henry's law coefficients.
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| megan_cmpds | drv_physics | drv_flds_in | char(150) | ['any char'] |
List of possible MEGAN compounds to use
(the list used by the simulation is on the megan_factors_file as the Comp_Name)
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| megan_factors_file | megan_emis_nl | drv_flds_in | char | ['any char'] |
File containing MEGAN emissions factors. Includes the list of MEGAN compounds that can be
used in the Comp_Name variable on the file.
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|
| megan_mapped_emisfctrs | megan_emis_nl | drv_flds_in | logical | ['.true.', '.false.'] |
MEGAN mapped isoprene emissions factors switch
If TRUE then use mapped MEGAN emissions factors for isoprene.
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| megan_specifier | megan_emis_nl | drv_flds_in | char(100) | ['any char'] |
MEGAN specifier. This is in the form of: Chem-compound = megan_compound(s)
where megan_compound(s) can be the sum of megan compounds with a "+" between them.
In each equation, the item to the left of the equal sign is a CAM chemistry compound, the
items to the right are compounds known to the MEGAN model (single or combinations).
For example: megan_specifier = 'ISOP = isoprene', 'C10H16 = pinene_a + carene_3 + thujene_a'
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| drydep_list | drydep_inparm | dry-deposition | char(300) | ['any char'] |
List of species that undergo dry deposition.
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| dust_emis_method | dust_emis_inparm | dust_emissions | char*80 | ['Zender_2003', 'Leung_2023'] |
Which dust emission method is going to be used. Either the Zender 2003 scheme or the Leung 2023
scheme.
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| zender_soil_erod_source | dust_emis_inparm | dust_emissions | char*80 | ['none', 'lnd', 'atm'] |
Option only applying for the Zender_2003 method for whether the soil erodibility file is handled
in the active LAND model or in the ATM model.
(only used when dust_emis_method is Zender_2003)
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| fire_emis_elevated | fire_emis_nl | Fire_emissions | logical | ['.true.', '.false.'] |
If ture fire emissions are input into atmosphere as elevated forcings.
Otherwise they are treated as surface emissions.
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| fire_emis_factors_file | fire_emis_nl | Fire_emissions | char | ['any char'] |
File containing fire emissions factors.
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| fire_emis_specifier | fire_emis_nl | Fire_emissions | char(100) | ['any char'] |
Fire emissions specifier.
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| atm_provides_lightning | lightning_coupling_nl | lightning_coupling | logical | ['.true.', '.false.'] |
If TRUE atmosphere model will provide prognosed lightning flash frequency (flashes per minute).
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| ndep_list | ndep_inparm | nitrogen deposition | char(2) | ['any char'] |
List of nitrogen deposition fluxes to be sent from CAM to surfae models.
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| atm_ozone_frequency | ozone_coupling_nl | ozone_coupling | char | ['any char'] |
Frequency of surface ozone field passed from CAM to surface components.
Surface ozone is passed every coupling interval, but this namelist flag
indicates whether the timestep-level values are interpolated from a
coarser temporal resolution.
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| Variable | Namelist Group | Category | Entry Type | Valid Values | Possible Default Values | Description and out-of-the-box Default |