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namelist_definition_ctsm.xml
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3058 lines (2545 loc) · 139 KB
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<?xml version="1.0"?>
<?xml-stylesheet type="text/xsl" href="namelist_definition.xsl"?>
<namelist_definition>
<!-- ======================================================================================== -->
<!-- CLM Namelist -->
<!-- ======================================================================================== -->
<entry id="finidat"
type="char*256"
category="datasets"
input_pathname="abs"
group="clm_inparm"
valid_values="" >
Full pathname of initial conditions file. If blank CLM will startup from
arbitrary initial conditions.
</entry>
<entry id="use_init_interp"
type="logical"
category="datasets"
group="clm_inparm"
valid_values="" >
If set to .true., interpinic will be called to interpolate the file given by finidat,
creating the output file specified by finidat_interp_dest.
This requires that finidat be non-blank.
</entry>
<entry id="nrevsn"
type="char*256"
category="clm_restart"
input_pathname="abs"
group="clm_inparm"
valid_values="" >
Full pathname of master restart file for a branch run. (only used if RUN_TYPE=branch)
(Set with RUN_REFCASE and RUN_REFDATE)
</entry>
<entry id="compname"
type="char*8"
category="datasets"
group="clm_inparm"
value="clm2"
valid_values="clm2,clm4,clm5" >
Component name to use in history and restart files
</entry>
<entry id="fatmlndfrc"
type="char*256"
category="datasets"
input_pathname="abs"
group="clm_inparm"
valid_values="" >
Full pathname of land fraction data file.
</entry>
<entry id="clump_pproc" type="integer" category="clm_performance"
group="clm_inparm" valid_values="" >
Clumps per processor.
</entry>
<entry id="co2_ppmv" type="real" category="clm_physics"
group="clm_inparm" valid_values="" >
Atmospheric CO2 molar ratio (by volume) only used when co2_type==constant (umol/mol)
(Set by CCSM_CO2_PPMV)
</entry>
<entry id="co2_type" type="char*16" category="clm_physics"
group="clm_inparm" valid_values="constant,prognostic,diagnostic" >
Type of CO2 feedback.
constant = use the input co2_ppmv value
prognostic = use the prognostic value sent from the atmosphere
diagnostic = use the diagnostic value sent from the atmosphere
</entry>
<entry id="suplnitro" type="char*15" category="clm_physics"
group="clm_inparm" valid_values="NONE,ALL" >
Supplemental Nitrogen mode and for what type of vegetation it's turned on for.
In this mode Nitrogen is unlimited rather than prognosed and in general vegetation is
over-productive.
NONE = No vegetation types get supplemental Nitrogen
ALL = Supplemental Nitrogen is active for all vegetation types
</entry>
<entry id="create_crop_landunit" type="logical" category="clm_physics"
group="clm_inparm" valid_values="" >
If TRUE, separate the vegetated landunit into a crop landunit and a natural vegetation landunit
</entry>
<entry id="run_zero_weight_urban" type="logical" category="clm_physics"
group="clm_inparm" valid_values="" >
If TRUE, run all urban landunits everywhere where we have valid urban data.
This forces memory to be allocated and calculations to be run even for 0-weight urban points.
This has a substantial impact on memory use and performance, and should only be used
if you're interested in potential urban behavior globally.
</entry>
<entry id="all_active" type="logical" category="clm_physics"
group="clm_inparm" valid_values="" >
If TRUE, make ALL pfts, columns and landunits active, even those with 0 weight.
This means that computations will be run even over these 0-weight points.
THIS IS ONLY FOR TESTING PURPOSES - IT HAS NOT BEEN CHECKED FOR SCIENTIFIC VALIDITY.
</entry>
<entry id="force_send_to_atm"
type="logical"
category="drv_physics"
group="ctsm_nuopc_cap"
valid_values="" >
If TRUE (which is the default), send the expcrt state for the nuopc driver to the ATM even if running with a data ATM
</entry>
<entry id="organic_frac_squared" type="logical" category="clm_physics"
group="clm_soilstate_inparm" valid_values="" >
If TRUE, square the organic fraction when it's used (as was done in CLM4.5)
Otherwise use the fraction straight up (the default for CLM5.0)
</entry>
<entry id="soil_layerstruct_predefined" type="char*16" category="clm_physics"
group="clm_inparm" valid_values="10SL_3.5m,23SL_3.5m,49SL_10m,20SL_8.5m,4SL_2m" >
10SL_3.5m = standard CLM4 and CLM4.5 version
23SL_3.5m = more vertical layers for permafrost simulations
49SL_10m = 49 layer soil column, 10m of soil, 5 bedrock layers
20SL_8.5m = 20 layer soil column, 8m of soil, 5 bedrock layers
4SL_2m = 4 layer soil column, 2m of soil, 0 bedrock layers
</entry>
<entry id="soil_layerstruct_userdefined" type="real(99)" category="clm_physics"
group="clm_inparm" valid_values="" >
User-defined vector of dzsoi. The length of this vector determines nlevgrnd. When the user sets this vector, they have to set soil_layerstruct_userdefined_nlevsoi in the namelist, too; soil_layerstruct_userdefined_nlevsoi must be less than nlevgrnd in this version of the model, even though ideally soil_layerstruct_userdefined_nlevsoi could also equal nlevgrnd.
<default>Default: rundef</default>
</entry>
<entry id="soil_layerstruct_userdefined_nlevsoi" type="integer" category="clm_physics"
group="clm_inparm" valid_values="" >
User-defined number of soil layers required to be set in the namelist when the user sets soil_layerstruct_userdefined in the namelist.
<default>Default: iundef</default>
</entry>
<entry id="use_bedrock" type="logical" category="clm_physics"
group="clm_inparm" valid_values="" >
If TRUE, use variable soil depth.
If present on surface dataset, use depth to bedrock information to
specify spatially variable soil thickness. If not present, use bottom
of soil column (nlevsoi).
</entry>
<entry id="snicar_numrad_snw" type="integer" category="clm_physics"
group="clm_inparm" valid_values="5,480" value="5" >
number of wavelength bands used in SNICAR snow albedo calculation
(snicar_numrad_snw=5 is the only supported option; others are EXPERIMENTAL, UNSUPPORTED, and UNTESTED!)
</entry>
<entry id="snicar_solarspec" type="char*25" category="clm_physics"
group="clm_inparm" valid_values="mid_latitude_winter,mid_latitude_summer,sub_arctic_winter,sub_arctic_summer,summit_greenland_summer,high_mountain_summer" value="mid_latitude_winter" >
type of downward solar radiation spectrum for SNICAR snow albedo calculation
(snicar_solarspec='mid_latitude_winter' is the only supported option; others are EXPERIMENTAL, UNSUPPORTED, and UNTESTED!)
</entry>
<entry id="snicar_dust_optics" type="char*25" category="clm_physics"
group="clm_inparm" valid_values="sahara,san_juan_mtns_colorado,greenland" value="sahara" >
dust optics type for SNICAR snow albedo calculation
(snicar_dust_optics='sahara' is the only supported option; others are EXPERIMENTAL, UNSUPPORTED, and UNTESTED!)
</entry>
<entry id="snicar_snw_shape" type="char*25" category="clm_physics"
group="clm_inparm" valid_values="sphere,spheroid,hexagonal_plate,koch_snowflake" value="hexagonal_plate" >
snow grain shape used in SNICAR snow albedo calculation
(snicar_snw_shape='sphere' is supported in pre-ctsm5.1 model versions and 'hexagonal place' is supported in newer versions; others are EXPERIMENTAL, UNSUPPORTED, and UNTESTED!)
</entry>
<entry id="snicar_use_aerosol" type="logical" category="clm_physics"
group="clm_inparm" value=".true.">
Toggle to turn on/off aerosol deposition flux in snow in SNICAR
(snicar_use_aerosol='.false.' is EXPERIMENTAL, UNSUPPORTED, and UNTESTED!)
</entry>
<entry id="snicar_snobc_intmix" type="logical" category="clm_physics"
group="clm_inparm" value=".false." >
option to activate BC-snow internal mixing in SNICAR snow albedo calculation
(snicar_snobc_intmix='.true.' is EXPERIMENTAL, UNSUPPORTED, and UNTESTED!)
</entry>
<entry id="snicar_snodst_intmix" type="logical" category="clm_physics"
group="clm_inparm" value=".false." >
option to activate dust-snow internal mixing in SNICAR snow albedo calculation
(snicar_snodst_intmix='.true.' is EXPERIMENTAL, UNSUPPORTED, and UNTESTED!)
</entry>
<entry id="do_sno_oc" type="logical" category="clm_physics"
group="clm_inparm" value=".false." >
option to activate organic carbon (OC) in SNICAR snow albedo calculation
(do_sno_oc='.true.' is EXPERIMENTAL, UNSUPPORTED, and UNTESTED!)
</entry>
<entry id="rooting_profile_method_water" type="integer" category="clm_physics"
group="rooting_profile_inparm" valid_values="0,1,2" >
Index of rooting profile for water
Changes rooting profile from Zeng 2001 double exponential (0) to
Jackson 1996 single exponential (1) to Koven uniform exponential (2).
</entry>
<entry id="rooting_profile_method_carbon" type="integer" category="clm_physics"
group="rooting_profile_inparm" valid_values="0,1,2" >
Index of rooting profile for carbon
Changes rooting profile from Zeng 2001 double exponential (0) to
Jackson 1996 single exponential (1) to Koven uniform exponential (2).
</entry>
<entry id="rooting_profile_method_soilcarbon" type="integer" category="clm_physics"
group="rooting_profile_inparm" valid_values="0,1,2" >
Index of rooting profile for soil carbon
Changes rooting profile from Zeng 2001 double exponential (0) to
Jackson 1996 single exponential (1) to Koven uniform exponential (2).
</entry>
<entry id="rooting_profile_varindex_water" type="integer" category="clm_physics"
group="rooting_profile_inparm" valid_values="1,2" >
Variant index of rooting profile for water
(Currently only used for Jackson 1996 method)
</entry>
<entry id="rooting_profile_varindex_carbon" type="integer" category="clm_physics"
group="rooting_profile_inparm" valid_values="1,2" >
Variant index of rooting profile for carbon and soil carbon
(Currently only used for Jackson 1996 method)
</entry>
<entry id="rooting_profile_method_carbon" type="integer" category="clm_physics"
group="rooting_profile_inparm" valid_values="0,1,2" >
Index of rooting profile for carbon
Changes rooting profile from Zeng 2001 double exponential (0) to
Jackson 1996 single exponential (1) to Koven uniform exponential (2).
</entry>
<entry id="soil_resis_method" type="integer" category="clm_physics"
group="soil_resis_inparm" valid_values="0,1" >
Index of evaporative resistance method.
Changes soil evaporative resistance method from Sakaguchi and Zeng
2009 Beta function (0) to Swenson and Lawrence 2014 dry surface layer
formulation (1).
</entry>
<entry id="fire_method" type="char*80" category="clm_physics"
group="cnfire_inparm" valid_values="nofire,li2014qianfrc,li2016crufrc,li2021gswpfrc,li2024gswpfrc,li2024crujra" >
The method type to use for CNFire
nofire: Turn fire effects off
li2014qianfrc: Reference paper Li, et. al.(2014) tuned with QIAN atmospheric forcing
li2016crufrc: Reference paper Li, et. al.(2016) tuned with CRU-NCEP atmospheric forcing
li2021gswpfrc: No reference paper yet, tuned with GSWP3 atmospheric forcing
li2024gswpfrc: No reference paper yet, tuned with GSWP3 atmospheric forcing
li2024crujra: No reference paper yet, tuned with CRU-JRA forcing (CRUJRA)
</entry>
<entry id="pot_hmn_ign_counts_alpha" type="real" category="clm_physics"
group="lifire_inparm" >
Potential human ignition counts (/person/month)
</entry>
<entry id="boreal_peatfire_c" type="real" category="clm_physics"
group="lifire_inparm" >
boreal peat fires (/hr)
</entry>
<entry id="non_boreal_peatfire_c" type="real" category="clm_physics"
group="lifire_inparm" >
non-boreal peat fires (/hr)
</entry>
<entry id="cropfire_a1" type="real" category="clm_physics"
group="lifire_inparm" >
Scalar for cropfire (/hr)
</entry>
<entry id="rh_low" type="real" category="clm_physics"
group="lifire_inparm" >
Critical RH for ignition (0-100)
</entry>
<entry id="rh_hgh" type="real" category="clm_physics"
group="lifire_inparm" >
Saturation RH for ignition (0-100)
</entry>
<entry id="lfuel" type="real" category="clm_physics"
group="lifire_inparm" >
Lower threshold for fuel mass needed for ignition
</entry>
<entry id="ufuel" type="real" category="clm_physics"
group="lifire_inparm" >
Upper threshold for fuel mass needed for ignition
</entry>
<entry id="bt_max" type="real" category="clm_physics"
group="lifire_inparm" >
Saturation BTRAN for ignition (0-1)
</entry>
<entry id="bt_min" type="real" category="clm_physics"
group="lifire_inparm" >
Critical BTRAN for ignition (0-1)
</entry>
<entry id="cli_scale" type="real" category="clm_physics"
group="lifire_inparm" >
Global constant for deforestation fires (/day)
</entry>
<entry id="occur_hi_gdp_tree" type="real" category="clm_physics"
group="lifire_inparm" >
Fire occurance for high GDP areas that are tree dominated (fraction)
</entry>
<entry id="cmb_cmplt_fact_litter" type="real" category="clm_physics"
group="lifire_inparm" >
Combustion completeness factor for litter (unitless)
</entry>
<entry id="cmb_cmplt_fact_cwd" type="real" category="clm_physics"
group="lifire_inparm" >
Combustion completeness factor for CWD[Course Woody Debris] (unitless)
</entry>
<entry id="max_rh30_affecting_fuel" type="real" category="clm_physics"
group="lifire_inparm" >
Value above which 30-day running relative humidity has no effect on fuel combustibility
</entry>
<entry id="defo_fire_precip_thresh_bet" type="real" category="clm_physics"
group="lifire_inparm" >
Value (mm/d) above which running mean daily precipitation (10 or 60 days) does not allow deforestation fire for a column with broadleaf evergreen tropical trees but no broadleaf deciduous tropical trees. "PFT-dependent thresholds of P60d and P10d" in Li et al. (2013, doi:10.5194/bg-10-2293-2013).
</entry>
<entry id="defo_fire_precip_thresh_bdt" type="real" category="clm_physics"
group="lifire_inparm" >
Value (mm/d) above which running mean daily precipitation (10 or 60 days) does not allow deforestation fire for a column with broadleaf deciduous tropical trees but no broadleaf evergreen tropical trees. "PFT-dependent thresholds of P60d and P10d" in Li et al. (2013, doi:10.5194/bg-10-2293-2013).
</entry>
<entry id="nonborpeat_fire_precip_denom" type="real" category="clm_physics"
group="lifire_inparm" >
Denominator of precipitation in equation relating that to non-boreal peat fire (unitless). Eq. 9 in Li et al. (2013, doi:10.5194/bg-10-2293-2013).
</entry>
<entry id="borpeat_fire_soilmoist_denom" type="real" category="clm_physics"
group="lifire_inparm" >
Denominator of exponential in soil moisture term of equation relating that and temperature to boreal peat fire (unitless). Eq. 10 in Li et al. (2013, doi:10.5194/bg-10-2293-2013).
</entry>
<entry id="ncrit" type="real" category="clm_physics"
group="cnprecision_inparm" >
Critical threshold for truncation of Nitrogen (truncate Nitrogen states to zero below this value)
</entry>
<entry id="ccrit" type="real" category="clm_physics"
group="cnprecision_inparm" >
Critical threshold for truncation of Carbon (truncate Carbon states to zero below this value)
</entry>
<entry id="nnegcrit" type="real" category="clm_physics"
group="cnprecision_inparm" >
Critical threshold of negative Nitrogen to die (abort when Nitrogen states are below this value)
</entry>
<entry id="cnegcrit" type="real" category="clm_physics"
group="cnprecision_inparm" >
Critical threshold of negative Carbon to die (abort when Carbon states are below this value)
</entry>
<entry id="freelivfix_slope_wET" type="real" category="clm_physics"
group="mineral_nitrogen_dynamics" >
Slope of free living Nitrogen fixation with annual ET
</entry>
<entry id="freelivfix_intercept" type="real" category="clm_physics"
group="mineral_nitrogen_dynamics" >
Intercept of free living Nitrogen fixation with zero annual ET
</entry>
<entry id="nfix_method" type="char*25" category="cnfun_inparm"
group="cnfun_inparm" valid_values="Houlton,Bytnerowicz" value="Houlton" >
Choice of nfix parameterization
</entry>
<entry id="use_undercanopy_stability" type="logical" category="clm_physics"
group="canopyfluxes_inparm" valid_values="" >
If TRUE use the undercanopy stability term used with CLM4.5 (Sakaguchi&Zeng, 2008)
</entry>
<entry id="use_biomass_heat_storage" type="logical" category="clm_physics"
group="canopyfluxes_inparm" valid_values="" >
If TRUE, include biomass heat storage in canopy energy balance.
</entry>
<entry id="itmax_canopy_fluxes" type="integer" category="clm_physics"
group="canopyfluxes_inparm">
Max number of iterations used in subr. CanopyFluxes. For many years, 40 was the hardwired default value.
<default>Default: 40</default>
</entry>
<entry id="use_clm5_fpi" type="logical" category="clm_physics"
group="clm_canopyhydrology_inparm" valid_values="" >
If TRUE use clm5 equation for fraction of intercepted precipitation
</entry>
<entry id="baseflow_scalar" type="real" category="clm_physics"
group="soilhydrology_inparm" valid_values="" >
Scalar multiplier for base flow rate
(ONLY used if lower_boundary_condition is not aquifer or table)
</entry>
<entry id="soilwater_movement_method" type="integer" category="clm_physics"
group="soilwater_movement_inparm" valid_values="0,1" >
Index of solution method of Richards equation.
Change method for richards equation solution and boundary
conditions.
CLM 4.5 - soilwater_movement_method = 0 (Zeng and Decker, 2009, method).
CLM 5.0 - soilwater_movement_method = 1 (adaptive time stepping moisture form from Martyn Clark).
1 (adaptive time stepping moisture form
</entry>
<entry id="upper_boundary_condition" type="integer" category="clm_physics"
group="soilwater_movement_inparm" valid_values="1" >
Index of upper boundary condition for Richards equation.
</entry>
<entry id="lower_boundary_condition" type="integer" category="clm_physics"
group="soilwater_movement_inparm" valid_values="1,2,3,4" >
Index of lower boundary condition for Richards equation.
lower_boundary_condition = 1 : flux lower boundary condition (use with soilwater_movement_method=adaptive time stepping)
lower_boundary_condition = 2 : zero-flux lower boundary condition (use with soilwater_movement_method=adaptive time stepping)
lower_boundary_condition = 3 : water table head-based lower boundary condition w/ aquifer layer. (use with soilwater_movement_method=adaptive time stepping)
lower_boundary_condition = 4 : 11-layer solution w/ aquifer layer (only used with soilwater_movement_method=Zeng&Decker 2009)
TODO(bja, 2015-09) these should be strings so they have meaningful names instead of ints.
</entry>
<entry id="dtmin" type="real" category="clm_physics"
group="soilwater_movement_inparm" valid_values="" >
minimum time step length (seconds) for adaptive time stepping in richards equation
</entry>
<entry id="verySmall" type="real" category="clm_physics"
group="soilwater_movement_inparm" valid_values="" >
a very small number: used to check for sub step completion for adaptive time stepping in richards equation
</entry>
<entry id="xTolerUpper" type="real" category="clm_physics"
group="soilwater_movement_inparm" valid_values="" >
tolerance to halve length of substep for adaptive time stepping in richards equation
</entry>
<entry id="xTolerLower" type="real" category="clm_physics"
group="soilwater_movement_inparm" valid_values="" >
tolerance to double length of substep for adaptive time stepping in richards equation
</entry>
<entry id="expensive" type="integer" category="clm_physics"
group="soilwater_movement_inparm" valid_values="" >
</entry>
<entry id="inexpensive" type="integer" category="clm_physics"
group="soilwater_movement_inparm" valid_values="" >
</entry>
<entry id="flux_calculation" type="integer" category="clm_physics"
group="soilwater_movement_inparm" valid_values="" >
</entry>
<entry id="irrig_min_lai" type="real" category="clm_physics"
group="irrigation_inparm" valid_values="">
Minimum leaf area index for irrigation to occur
</entry>
<entry id="irrig_start_time" type="integer" category="clm_physics"
group="irrigation_inparm" valid_values="">
Time of day to check whether we need irrigation, seconds (0 = midnight).
We start applying the irrigation in the time step FOLLOWING this time.
</entry>
<entry id="irrig_length" type="integer" category="clm_physics"
group="irrigation_inparm" valid_values="">
Desired amount of time to irrigate per day (sec).
Actual time may differ if this is not a multiple of dtime.
</entry>
<entry id="irrig_target_smp" type="real" category="clm_physics"
group="irrigation_inparm" valid_values="">
Target soil matric potential for irrigation (mm).
When we irrigate, we aim to bring the total soil moisture in the top (irrig_depth) m of soil up to this level.
</entry>
<entry id="irrig_depth" type="real" category="clm_physics"
group="irrigation_inparm" valid_values="">
Soil depth to which we measure for irrigation (m)
</entry>
<entry id="irrig_threshold_fraction" type="real" category="clm_physics"
group="irrigation_inparm" valid_values="">
Determines soil moisture threshold at which we irrigate.
If h2osoi_liq_wilting_point is the soil moisture level at wilting point and
h2osoi_liq_target is the soil moisture level at the target irrigation level
(given by irrig_target_smp), then the threshold at which we irrigate is
h2osoi_liq_wilting_point +
irrig_threshold_fraction*(h2osoi_liq_target - h2osoi_liq_wilting_point)
A value of 1 means that we irrigate whenever soil moisture falls below the target.
A value of 0 means that we only irrigate when soil moisture falls below the wilting point.
</entry>
<entry id="irrig_river_volume_threshold" type="real" category="clm_physics"
group="irrigation_inparm" valid_values="">
Threshold for river water volume below which irrigation is shut off (as a fraction of available river water), if limit_irrigation_if_rof_enabled is .true.
A threshold of 0 means allow all river water to be used;
a threshold of 0.1 means allow 90% of the river volume to be used; etc.
</entry>
<entry id="limit_irrigation_if_rof_enabled" type="logical" category="clm_physics"
group="irrigation_inparm" valid_values="" >
If TRUE, limit irrigation when river storage drops below a threshold.
Only applies if using an active runoff (ROF) model; otherwise, river storage-based limitation
is turned off regardless of the setting of this namelist variable.
</entry>
<entry id="use_groundwater_irrigation" type="logical" category="clm_physics"
group="irrigation_inparm" valid_values="" >
If TRUE, supply irrigation from groundwater (in addition to surface water).
Can only be set if limit_irrigation_if_rof_enabled is true (otherwise
groundwater extraction is never invoked).
Cannot be combined with lower_boundary_condition = 3 or 4
</entry>
<entry id="irrig_method_default" type="char*32" category="clm_physics"
group="irrigation_inparm"
valid_values="drip,sprinkler" >
Irrigation method used if not specified on surface dataset
</entry>
<entry id="irrigate" type="logical" category="clm_physics"
group="clm_inparm" >
If TRUE, irrigation will be active.
</entry>
<entry id="crop_fsat_equals_zero" type="logical" category="clm_physics"
group="clm_inparm" >
If TRUE, fsat will be set to zero for crop columns.
</entry>
<entry id="maxpatch_glc" type="integer" category="clm_physics"
group="clm_inparm" valid_values="1,3,5,10,36" >
Number of multiple elevation classes over glacier points.
</entry>
<entry id="glc_do_dynglacier" type="logical" category="clm_physics"
group="clm_inparm" valid_values="" >
If TRUE, dynamically change areas and topographic heights over glacier points.
Only works when running with a non-stub glacier model.
</entry>
<entry id="glacier_region_behavior" type="char*32(10)" category="clm_physics"
group="clm_glacier_behavior"
valid_values="multiple,virtual,single_at_atm_topo,UNSET" >
Behavior of each glacier region (GLACIER_REGION in surface dataset).
First item corresponds to GLACIER_REGION with ID 0 in the surface dataset,
second to GLACIER_REGION with ID 1, etc.
Allowed values are:
'multiple': grid cells can potentially have multiple glacier elevation classes,
but no virtual columns
'virtual': grid cells have virtual columns: values are computed for every glacier
elevation class, even those with 0 area (in order to provide surface mass
balance for every glacier elevation class).
'single_at_atm_topo': glacier landunits in these grid cells have a single column,
whose elevation matches the atmosphere's topographic height (so that there is no
adjustment due to downscaling)
'UNSET': place-holder for non-existent regions
Most (if not all) of the region where there is an ice sheet model should have a behavior
of 'virtual': This behavior is needed to compute surface mass balance (SMB) in all
elevation classes for the sake of vertical downscaling, and is needed to allow two-way
feedbacks of glacier areas. You are allowed to have gridcells with non-virtual behavior in
this domain, but this should be minimized: SMB cannot be computed there, and CLM subgrid
areas will not remain in sync with the GLC model. (Within the icemask - i.e., the active
glc domain - you are NOT allowed to have gridcells with non-virtual behavior that also
have glacier_region_melt_behavior='replaced_by_ice': within the icemask, you're only
allowed to have non-virtual behavior in places where you are not computing SMB).
</entry>
<entry id="glacier_region_melt_behavior" type="char*32(10)" category="clm_physics"
group="clm_glacier_behavior"
valid_values="replaced_by_ice,remains_in_place,UNSET" >
Treatment of ice melt for each glacier region (GLACIER_REGION in surface dataset).
First item corresponds to GLACIER_REGION with ID 0 in the surface dataset,
second to GLACIER_REGION with ID 1, etc.
Allowed values are:
'replaced_by_ice': any melted ice runs off and is immediately replaced by solid ice;
this results in positive liquid runoff and negative ice runoff
'remains_in_place': any melted ice remains in place as liquid until it refreezes;
thus, ice melt does not result in any runoff
'UNSET': place-holder for non-existent regions
IMPORTANT NOTE: Regions with the 'remains_in_place' behavior also do not compute SMB
(because negative SMB would be pretty much meaningless in those regions). Thus, most (if
not all) of the region where there is an ice sheet model should have the 'replaced_by_ice'
behavior; the SMB sent to the GLC model will be 0 in any gridcells with the
'remains_in_place' behavior.
Regions with the 'replaced_by_ice' behavior also compute SMB for the vegetated column.
</entry>
<entry id="glacier_region_ice_runoff_behavior" type="char*32(10)" category="clm_physics"
group="clm_glacier_behavior"
valid_values="remains_ice,melted,UNSET" >
Treatment of ice runoff for each glacier region (GLACIER_REGION in surface dataset).
First item corresponds to GLACIER_REGION with ID 0 in the surface dataset,
second to GLACIER_REGION with ID 1, etc.
Allowed values are:
'remains_ice': ice runoff is sent to the river model as ice; this is a crude parameterization
of iceberg calving, and so is appropriate in regions where there is substantial iceberg calving
in reality
'melted': ice runoff generated by the CLM physics (primarily due to snow capping) is melted
(generating a negative sensible heat flux) and runs off as liquid; this is appropriate in
regions that have little iceberg calving in reality. This can be important to avoid unrealistic
cooling of the ocean and consequent runaway sea ice growth. This option cannot be
combined with glacier_region_melt_behavior='replaced_by_ice': While there is nothing
fundamentally wrong with this combination, it can result in problematic, non-physical
fluxes (particularly, a large positive sensible heat flux during glacial melt in
regions where the ice sheet is not fully dynamic and two-way-coupled; see
https://github.com/ESCOMP/ctsm/issues/423 for details).
'UNSET': place-holder for non-existent regions
Only applies when melt_non_icesheet_ice_runoff is .true.
</entry>
<entry id="glc_snow_persistence_max_days" type="integer" category="clm_physics"
group="clm_inparm" valid_values="" >
Number of days before one considers the perennially snow-covered point 'land ice'
(and thus capable of generating a positive surface mass balance for the glacier model).
This is meant to compensate for the fact that, with small values of h2osno_max,
the onset of a snow-capped state (and thus conversion to land ice) can occur in an
unrealistically short amount of time.
Thus, in general, large values of h2osno_max should have glc_snow_persistence_max_days = 0;
small values of h2osno_max should have glc_snow_persistence_max_days > 0.
</entry>
<entry id="albice" type="real(2)" category="clm_physics"
group="clm_inparm" >
Visible and Near-infrared albedo's for glacier ice
</entry>
<entry id="br_root" type="real" category="clm_physics"
group="cnmresp_inparm" >
CN Maintenence Respiration base rate for roots
(if NOT set, use the value for br_mr on the params file)
</entry>
<entry id="rootstem_acc" type="logical" category="clm_physics"
group="photosyns_inparm" >
Switch to turn on root and stem respiratory acclimation
Atkin, Fisher et al. (2008) and Lombardozzi et al. (2015)
</entry>
<entry id="light_inhibit" type="logical" category="clm_physics"
group="photosyns_inparm" >
Switch to inihibit photosynthesis in daytime
Lloyd et al. 2010, & Metcalfe et al. 2012
</entry>
<entry id="modifyphoto_and_lmr_forcrop" type="logical" category="clm_physics"
group="photosyns_inparm" >
Modify photosynthesis and leaf maintence respiration for crop
</entry>
<entry id="leafresp_method" type="integer" category="clm_physics"
group="photosyns_inparm" >
Leaf maintencence respiration for canopy top at 25C method to use
0 Scaled by vcmax25top
1 Ryan 1991
2 Atkin 2015
</entry>
<entry id="stomatalcond_method" type="char*50" category="clm_physics"
group="photosyns_inparm" valid_values="Ball-Berry1987,Medlyn2011">
Stomatal conductance model method to use
Ball-Berry1987 --- Ball Berry 1987 methodology
Medlyn2011 ------- Medlyn 2011 methodology
</entry>
<entry id="leaf_mr_vcm" type="real" category="clm_physics"
group="clm_canopy_inparm" >
Scalar of leaf respiration to vcmax
</entry>
<entry id="zetamaxstable" type="real" category="clm_physics"
group="friction_velocity" >
The maximum value to use for zeta under stable conditions
</entry>
<entry id="use_fates" type="logical" category="physics"
group="clm_inparm" valid_values="" value=".false.">
Toggle to turn on the FATES model
Functionally Assembled Terrestrial Ecosystem Simulator (FATES)
</entry>
<entry id="fates_parteh_mode" type="integer" category="physics"
group="clm_inparm" valid_values="1,2">
Switch deciding which nutrient model to use in FATES.
(Only relevant if FATES is on)
</entry>
<entry id="fates_seeddisp_cadence" type="integer" category="physics"
group="clm_inparm" valid_values="0,1,2,3">
Switch defining the cadence at which seeds are dispersed across
gridcells. Setting the switch value to zero turns off dispersal.
Setting the switch to 1, 2, or 3 sets the dispersal cadence to
daily, monthly or yearly. The daily cadence is primarily
recommended for test and debug only. Note that turning this
feature on will result in more memory usage.
(Only relevant if FATES is on)
</entry>
<entry id="use_fates_tree_damage" type="logical" category="physics"
group="clm_inparm" valid_values="" value=".false.">
Toggle to turn on the tree damage module in FATES
(Only relevant if FATES is on)
</entry>
<entry id="fates_spitfire_mode" type="integer" category="physics"
group="clm_inparm" valid_values="0,1,2,3,4,5" value=".false.">
Turn on spitfire module to simulate fire by setting fates_spitfire_mode > 0.
Allowed values are:
0 : Simulations of fire are off
1 : use a global constant lightning rate found in fates_params.
2 : use an external lightning dataset.
3 : use an external confirmed ignitions dataset (not available through standard CSEM dataset collection).
4 : use external lightning and population datasets to simulate both natural and anthropogenic
5 : use gross domestic production and population datasets to simulate anthropogenic fire supression
ignitions.
(Only relevant if FATES is on)
</entry>
<entry id="use_fates_fixed_biogeog" type="logical" category="physics"
group="clm_inparm" valid_values="" value=".false.">
Toggle to turn on fixed biogeography mode
(Only relevant if FATES is on)
</entry>
<entry id="use_fates_nocomp" type="logical" category="physics"
group="clm_inparm" valid_values="" value=".false.">
Toggle to turn on no competition mode (only relevant if FATES is being used).
</entry>
<entry id="use_fates_sp" type="logical" category="physics"
group="clm_inparm" valid_values="" value=".false.">
Toggle to turn on FATES satellite phenology mode (only relevant if FATES is being used).
</entry>
<entry id="fates_harvest_mode" type="char*18" category="physics"
group="clm_inparm" valid_values="no_harvest,event_code,landuse_timeseries,luhdata_area,luhdata_mass">
Set FATES harvesting mode by setting fates_harvest_mode to a valid string option.
Allowed values are:
no_harvest: no fates harvesting of any kind
event_code: fates logging via fates logging event codes (see fates parameter file) only
landuse_timeseries: fates harvest driven by CLM flanduse_timeseries file (dynHarvestMod)**
luhdata_area: fates harvest driven by LUH2 raw harvest data, area-based (dynFATESLandUseChangeMod)
luhdata_mass: fates harvest driven by LUH2 raw harvest data, mass-based (dynFATESLandUseChangeMod)
**Note that the landuse_timeseries option is not the same as the FATES fluh_timeseries data file.
This option is older than the luhdata options and may be depricated at some point in the future.
</entry>
<entry id="use_fates_planthydro" type="logical" category="physics"
group="clm_inparm" valid_values="" value=".false.">
Toggle to turn on plant hydraulics
(Only relevant if FATES is on)
</entry>
<entry id="use_fates_cohort_age_tracking" type="logical" category="physics"
group="clm_inparm" valid_values="" value=".false.">
Toggle to turn on cohort age tracking (by default FATES only tracks age of patches)
(Only relevant if FATES is on).
</entry>
<entry id="use_fates_ed_st3" type="logical" category="physics"
group="clm_inparm" valid_values="" value=".false.">
Toggle to turn on Static Stand Structure Mode (only relevant if FATES is being used).
(Only relevant if FATES is on).
</entry>
<entry id="use_fates_ed_prescribed_phys" type="logical" category="physics"
group="clm_inparm" valid_values="" value=".false.">
Toggle to turn on prescribed physiology
(Only relevant if FATES is on).
</entry>
<entry id="use_fates_inventory_init" type="logical" category="physics"
group="clm_inparm" valid_values="" value=".false.">
Toggle to turn on inventory initialization to startup FATES
(Only relevant if FATES is on).
</entry>
<entry id="fates_inventory_ctrl_filename" type="char*256" category="datasets"
input_pathname="abs" group="clm_inparm" valid_values="" >
Full pathname to the inventory initialization control file.
(Required, if use_fates_inventory_init=T)
(Only relevant if FATES is on).
</entry>
<entry id="fates_history_dimlevel" type="integer(2)" category="physics"
group="clm_inparm" valid_values="0,1,2" >
Setting for what types of FATES history to be allocate and
calculated at the dynamics timestep (1st integer) and the
model timestep (2nd integer). This must be consistent with
hist_fincl*, ie output variables must not be listed if the
output level is not enabled.
0 = no fates history variables are calculated or allocated
1 = only time x space (3d) fates history variables allowed
2 = multiplexed dimensioned fates history is also allowed
(Only relevant if FATES is on)
</entry>
<!-- This may eventually migrate to the dynamic_subgrid group-->
<entry id="use_fates_luh" type="logical" category="physics"
group="clm_inparm" valid_values="" >
If TRUE, enable use of land use harmonization (LUH) state and transition data from luh_timeseries file.
This is enabled by default if fates_harvest_mode is set to use the raw LUH2 harvest data
(Also, only valid for use_fates = true and is incompatible with transient runs currently.)
</entry>
<entry id="use_fates_lupft" type="logical" category="physics"
group="clm_inparm" valid_values="" value=".false.">
If TRUE, enable use of FATES land use with no competition and fixed biogeography. This mode
requires the use of the land use x pft association static data map file. See the
flandusepftdat definition entry in this file for more information.
(Only valid for use_fates = true and is incompatible with transient runs currently.)
</entry>
<entry id="use_fates_potentialveg" type="logical" category="physics"
group="clm_inparm" valid_values="" >
If TRUE, ignore the land-use state vector and transitions, and assert that all lands
are primary, and that there is no harvest. This mode is only relevant for FATES
spin-up workflows that are intending to use the spin-up restart output to start a
FATES land use transient case using the use_fates_lupft namelist option. The option
should be set to true for the spin-up case and false for the transient case.
</entry>
<!-- This could eventually be included in the "dynamic_subgrid" -->
<entry id="fluh_timeseries" type="char*256" category="datasets"
input_pathname="abs" group="clm_inparm" valid_values="" >
Full pathname of unified land use harmonization (LUH) data file. This causes the land-use
types to vary over time.
(Required, if use_fates_luh=T)
(Only relevant if FATES is on).
</entry>
<entry id="flandusepftdat" type="char*256" category="datasets"
input_pathname="abs" group="clm_inparm" valid_values="" >
Full pathname of fates landuse x pft association static data map.
The file associates land use types with pfts across a static global map.
This file is necessary for running FATES with use_fates_luh,
use_fates_nocomp, and use_fates_fixedbiogeo engaged (note that use_fates_lupft
is provided as a namelist option to engage all necessary options). The file is output
by the FATES land use data tool (https://github.com/NGEET/tools-fates-landusedata)
which processes the raw land use data from the THEMIS tool data sets
(https://doi.org/10.5065/29s7-7b41)
</entry>
<entry id="use_luna" type="logical" category="physics"
group="clm_inparm" valid_values="" value=".false.">
Toggle to turn on the LUNA model, to effect Photosynthesis by leaf Nitrogen
LUNA operates on C3 and non-crop vegetation (see vcmax_opt for how other veg is handled)
LUNA: Leaf Utilization of Nitrogen for Assimilation
</entry>
<entry id="use_hillslope" type="logical" category="physics"
group="clm_inparm" valid_values="" value=".false.">
Toggle to turn on the hillslope model
</entry>
<entry id="downscale_hillslope_meteorology" type="logical" category="physics"
group="clm_inparm" valid_values="" value=".false.">
Toggle to turn on meteorological downscaling in hillslope model
</entry>
<entry id="use_hillslope_routing" type="logical" category="physics"
group="clm_inparm" valid_values="" value=".false.">
Toggle to turn on surface water routing in the hillslope hydrology model
</entry>
<entry id="hillslope_fsat_equals_zero" type="logical" category="physics"
group="clm_inparm" valid_values="" value=".false.">
If true, set fsat to zero for hillslope columns
</entry>
<entry id="hillslope_head_gradient_method" type="char*256" category="physics"
group="hillslope_hydrology_inparm" valid_values="Kinematic,Darcy">
Method for calculating hillslope saturated head gradient
</entry>
<entry id="hillslope_transmissivity_method" type="char*256" category="physics"
group="hillslope_hydrology_inparm" valid_values="LayerSum,Uniform">
Method for calculating transmissivity of hillslope columns
</entry>
<entry id="hillslope_pft_distribution_method" type="char*256" category="physics"
group="hillslope_properties_inparm" valid_values="Standard,FromFile,DominantPftUniform,DominantPftLowland,PftLowlandUpland">
Method for distributing pfts across hillslope columns
</entry>
<entry id="hillslope_soil_profile_method" type="char*256" category="physics"
group="hillslope_properties_inparm" valid_values="Uniform,FromFile,SetLowlandUpland,Linear">
Method for distributing soil thickness across hillslope columns
</entry>
<entry id="use_hydrstress" type="logical" category="physics"
group="clm_inparm" valid_values="" value=".false.">
Toggle to turn on the plant hydraulic stress model
</entry>
<entry id="lnc_opt" type="logical" category="clm_nitrogen"
group="clm_nitrogen" value=".false.">
How LUNA and Photosynthesis (if needed) will get Leaf nitrogen content
lnc_opt = true get from leaf N from CN model
lnc_opt = false get based on LAI and fixed CN ratio from parameter file
</entry>
<entry id="paramfile" type="char*256" category="datasets"
input_pathname="abs" group="clm_inparm" valid_values="" >
Full pathname datafile with plant function type (PFT) constants combined with
constants for biogeochem modules
</entry>
<entry id="fates_paramfile" type="char*256" category="datasets"
input_pathname="abs" group="clm_inparm" valid_values="" >
Full pathname datafile with fates parameters
(Only relevant if FATES is on).
</entry>
<entry id="fsurdat" type="char*256" category="datasets"
input_pathname="abs" group="clm_inparm" valid_values="" >
Full pathname of surface data file.
</entry>
<entry id="hillslope_file" type="char*256" category="datasets"
input_pathname="abs" group="clm_inparm" valid_values="" >
Full pathname of hillslope data file.
</entry>
<entry id="fsnowoptics" type="char*256" category="datasets"
input_pathname="abs" group="clm_inparm" valid_values="" >
SNICAR (SNow, ICe, and Aerosol Radiative model) optical data file name
</entry>
<entry id="fsnowaging" type="char*256" category="datasets"
input_pathname="abs" group="clm_inparm" valid_values="" >
SNICAR (SNow, ICe, and Aerosol Radiative model) snow aging data file name
</entry>
<entry id="hist_fields_list_file" type="logical" category="history"
group="clm_inparm" valid_values="" value=".false.">
If TRUE, write list of all output fields to separate file for documentation purposes
</entry>
<entry id="hist_avgflag_pertape" type="char*10(10)" category="history"
group="clm_inparm" valid_values="" >
Per file averaging flag.
'A' (average over history period)
'I' (instantaneous)
'X' (maximum over history period)
'M' (minimum over history period)
'LXXXXX' (local solar time at XXXXX seconds of day)
</entry>
<entry id="hist_type1d_pertape" type="char*4(10)" category="history"
group="clm_inparm" valid_values="GRID,LAND,COLS,PFTS, " >
Averaging type of output for 1D vector output (when hist_dov2xy is false).
GRID means average all land-units up to the grid-point level
LAND means average all columns up to the land-unit level
COLS means average all PFT's up to the column level
PFTS means report everything on native PFT level
</entry>
<entry id="hist_dov2xy" type="logical(10)" category="history"
group="clm_inparm" valid_values="" >
If TRUE, implies output data on a 2D latitude/longitude grid. False means
output in 1D vector format. One setting per history tape series.
</entry>
<entry id="hist_empty_htapes" type="logical" category="history"