CLM CASEROOT Variable Definitions

Viewing compontent tag
release-cesm2.2.01

Viewing model version
2.2.0

HTML created on
2020-09-28

Use CASEROOT tools xmlquery to query these variables and xmlchange to change their values.

Parameter Name Default Value Data Type Group CASEROOT File Valid Values Description
COMP_LND clm char case_comp env_case.xml ['clm']
Name of land component
LILAC_MODE off char build_component_clm env_build.xml ['on', 'off']
Flag to enable building the LILAC cap and coupling code
LND_TUNING_MODE UNSET char run_component_clm env_run.xml ['clm5_0_cam6.0', 'clm5_0_GSWP3v1', 'clm5_0_CRUv7', 'clm4_5_CRUv7', 'clm4_5_GSWP3v1', 'clm4_5_cam6.0']
Tuning parameters and initial conditions should be optimized for what CLM model version and what meteorlogical forcing combination?
    
CLM_PHYSICS_VERSION UNSET char run_component_clm env_run.xml ['clm4_5', 'clm5_0']
Overall physics version to use.
    This sets the default values for many different namelist options.
    This is typically set by the compset.
CLM_CONFIGURATION clm char run_component_clm env_run.xml ['clm', 'nwp']
Sets CLM default namelist options related to model configuration.
    clm: Configuration used for climate applications (CLM)
    nwp: Configuration used for numerical weather prediction applications
    
CLM_STRUCTURE standard char run_component_clm env_run.xml ['standard', 'fast']
Sets CLM default namelist options related to model structure.
    standard: Standard model structure, allowing for more subgrid heterogeneity,
    deeper soil, etc., at the cost of slower speeds.
    fast: Simplified model structure, achieving faster speeds at the cost of less
    subgrid heterogeneity, shallower soil, etc.
    
CLM_NML_USE_CASE UNSET char run_component_clm env_run.xml []
CLM namelist use_case.
      Determines the use-case that will be sent to the CLM build-namelist utility.
      This is normally set by the component set. This is an advanced flag and should only be
      used by expert users.
CLM_BLDNML_OPTS char run_component_clm env_run.xml []
CLM build-namelist options
CLM_CO2_TYPE constant char run_component_clm env_run.xml ['constant', 'diagnostic', 'prognostic']
Determines how CLM will determine where CO2 is set.
      If value is constant, it will be set to CCSM_CO2_PPMV,
      if value is either diagnostic or prognostic, the atmosphere model
      MUST send it to CLM. CLM_CO2_TYPE is normally set by the specific
      compset, since it HAS to be coordinated with settings for the
      atmospheric model. Do not modify this variable. If you want to modify for
      your experiment, use your own user-defined component set
      This is an advanced flag and should only be used by expert users.
CLM_NAMELIST_OPTS char run_component_clm env_run.xml []
CLM-specific namelist settings for -namelist option in the CLM
      build-namelist. CLM_NAMELIST_OPTS is normally set as a compset variable
      and in general should not be modified for supported compsets.
      It is recommended that if you want to modify this value for your experiment,
      you should use your own user-defined component sets via using create_newcase
      with a compset_file argument.
      This is an advanced flag and should only be used by expert users.
CLM_ACCELERATED_SPINUP off char run_component_clm env_run.xml ['on', 'off']
Turn on any settings for accellerating the model spinup.
    
CLM_USRDAT_NAME UNSET char run_component_clm env_run.xml []
Dataset name for user-created datasets. This is used as the argument
      in Buildconf/clm.buildnml to build-namelist -clm_usr_name. An example of
      such a dataset would be 1x1pt_boulderCO_c090722. The default value is UNSET.
      This is an advanced flag and should only be used by expert users.
CLM_FORCE_COLDSTART off char run_component_clm env_run.xml ['on', 'off']
Flag to the CLM build-namelist command to force CLM to do a
      cold start (finidat will be set to blanks).
      A value of on forces the model to spin up from a cold-start
      (arbitrary initial conditions). Setting this value in the xml file will take
      precedence over any settings for finidat in the $CASEROOT/user_clm_clm file.
CLM_USER_MODS char run_component_clm env_case.xml []
User mods to apply to specific compset matches. 
Parameter Name Default Value Data Type Group CASEROOT File Valid Values Description