CESM Component Models Namelist Definitions

Search or Browse POP2 Component Model Namelist Variables

This page contains the complete list of POP2 namelist variables available. They are grouped by categories designed to aid browsing. Clicking on the name of a variable will display descriptive information. If search terms are entered in the text box below, the list will be condensed to contain only matched variables.

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POP2: Decomp Settings

Namelist Variable	Type	Group
`clinic_distribution_type` Method to use to distribute blocks in baroclinic distribution. Valid Values: 'cartesian', 'balanced', 'spacecurve' Default: 'cartesian'	char*256	domain_nml
`ew_boundary_type` Type of boundary in the logical east-west direction for global domain. Valid Values: 'cyclic', 'closed' Default: 'cyclic'	char*256	domain_nml
`nprocs_clinic` Number of processors in the baroclinic distribution. Default: Set by CESM scripts	integer	domain_nml
`nprocs_tropic` Number of processors in the barotropic distribution. Default: Set by CESM scripts	integer	domain_nml
`ns_boundary_type` Type of boundary in the logical north-south direction for global domain. Valid Values: 'cyclic', 'closed', 'tripole' Default: 'closed'	char*256	domain_nml
`profile_barrier` Flag to add MPI_Barrier calls for timing studies in time-step module. Default: .false.	logical	domain_nml
`tropic_distribution_type` Method to use to distribute blocks in barotropic distribution. Valid Values: 'cartesian', 'balanced', 'spacecurve' Default: 'cartesian'	char*256	domain_nml

POP2: Grid Settings

Namelist Variable	Type	Group
`bathymetry_file` Input file for reading bathymetry info. Default: 'unknown_bathymetry'	char*256	grid_nml
`bottom_cell_file` Input file for thickness of partial bottom cells. Default: 'unknown_bottom_cell'	char*256	grid_nml
`flat_bottom` Flag for flat bottom topography. Default: .false.	logical	grid_nml
`horiz_grid_file` Input file for reading horizontal grid info. Default: Set by CESM scripts based on ocean grid	char*256	grid_nml
`horiz_grid_opt` Horizontal grid option. Valid Values: 'internal', 'file' Default: 'file'	char*256	grid_nml
`kmt_kmin` Minimum allowed non-zero KMT value. Default: 3	integer	grid_nml
`lremove_points` Flag for removing isolated points. Default: .false.	logical	grid_nml
`n_topo_smooth` Number of topo smoothing passes. Default: 0	integer	grid_nml
`partial_bottom_cells` Flag for partial bottom cells. Default: .false.	logical	grid_nml
`region_info_file` Input file with region identification info. Default: Set by CESM scripts based on ocean grid	char*256	grid_nml
`region_mask_file` Input file for reading region mask. Default: Set by CESM scripts based on ocean grid	char*256	grid_nml
`sfc_layer_opt` Choice for surface layer type. Valid Values: 'varthick', 'rigid', 'oldfree' Default: 'varthick'	char*256	grid_nml
`topography_file` Input file for reading topography info. Default: Set by CESM scripts based on ocean grid	char*256	grid_nml
`topography_opt` Topography (KMT) option. Valid Values: 'internal', 'bathymetry', 'file' Default: 'file'	char*256	grid_nml
`topography_outfile` Output file for writing horizontal grid info. Default: '$RUNDIR/$CASENAME.pop.h.topography_bathymetry.ieeer8'	char*256	grid_nml
`vert_grid_file` Input file for reading vertical grid info. Default: Set by CESM scripts based on ocean grid	char*256	grid_nml
`vert_grid_opt` Vertical grid option. Valid Values: 'internal', 'file' Default: 'file'	char*256	grid_nml

POP2: IO Settings

Namelist Variable	Type	Group
`log_filename` Root name for log file. Default: Set by CESM scripts.	char*256	io_nml
`lredirect_stdout` Flag to redirect stdout to a log file. Default: '.true.'	logical	io_nml
`luse_nf_64bit_offset` Flag to use 64-bit offset in netCDF files. Default: '.true.'	logical	io_nml
`luse_pointer_files` Flag to use files to point to location of restarts. Default: '.true.'	logical	io_nml
`num_iotasks` Number of input / output tasks. Default: 1	integer	io_nml
`pointer_filename` Name of file that points to location of restarts. Default: rpointer.ocn.* (found in $RUNDIR)	char*256	io_nml

POP2: Time Manager Settings

Namelist Variable	Type	Group
`accel_file` File containing acceleration factors. Default: Set by CESM scripts based on ocean grid	char*256	time_manager_nml
`allow_leapyear` Flag to allow leap years. Default: .false.	logical	time_manager_nml
`date_separator` Character to separate yyyy-mm-dd. Default: "-"	char*1	time_manager_nml
`dt_count` Input count to determine tracer timestep. Default: Set by CESM scripts based on ocean grid	integer	time_manager_nml
`dt_option` Method to determine tracer timestep size. Valid Values: 'auto_dt', 'steps_per_year', 'steps_per_day', 'seconds', 'hours' Default: 'steps_per_day'	char*256	time_manager_nml
`dtuxcel` Factor to multiply MOMENTUM timestep. Default: 1.0	real	time_manager_nml
`fit_freq` Number of intervals / days into which full and half timesteps must exactly "fit". Default: 1	integer	time_manager_nml
`iday0` Initial start date and time (day). Default: 2	integer	time_manager_nml
`ihour0` Initial start date and time (hour). Default: 0	integer	time_manager_nml
`iminute0` Initial start date and time (minute). Default: 0	integer	time_manager_nml
`imonth0` Initial start date and time (month). Default: 1	integer	time_manager_nml
`impcor` Flag for implicit treatment of Coriolis terms. Default: .true.	logical	time_manager_nml
`isecond0` Initial start date and time (second). Default: 0	integer	time_manager_nml
`iyear0` Initial start date and time (year). Default: 1	integer	time_manager_nml
`laccel` Flag for acceleration. Default: .false.	logical	time_manager_nml
`runid` An identifier for the run. Default: $CASENAME	char*256	time_manager_nml
`stop_count` Number of stop_option intervals before stop OR date (yyyymmdd) at which model stops. Default: 1000	integer	time_manager_nml
`stop_option` Specify how to determine stopping time. Valid Values: 'never', 'eoy', 'eom', 'eod', 'nyear', 'nyears', 'nmonth', 'nmonths', 'nday', 'ndays', 'nstep', 'nsteps', 'date' Default: 'nyear'	char*256	time_manager_nml
`time_mix_freq` Frequency of mixing. Default: 17	integer	time_manager_nml
`time_mix_opt` Option for time mixing (Matsuno or averaging). Valid Values: 'matsuno', 'avg', 'avgbb', 'avgfit' Default: 'avgfit'	char*256	time_manager_nml

POP2: TS Initialization

Namelist Variable	Type	Group
`init_ts_file` Input file for initial temperature and salinity. Default: Set by CESM scripts based on ocean grid	char*256	init_ts_nml
`init_ts_file_fmt` init_ts_file format (binary or netCDF). Valid Values: 'bin', 'nc' Default: 'bin'	char*256	init_ts_nml
`init_ts_option` Option for initializing temperature and salinity. Default: 'ccsm_startup'	char*256	init_ts_nml
`init_ts_outfile` Output file for writing temperature and salinity. Default: '$RUNDIR/$CASENAME.pop.h.ts_ic'	char*256	init_ts_nml
`init_ts_outfile_fmt` init_ts_outfile format (binary or netCDF). Valid Values: 'bin', 'nc' Default: 'nc'	char*256	init_ts_nml
`init_ts_suboption` Suboption for initializing temperature and salinity. Default: 'null'	char*256	init_ts_nml

POP2: Diagnostics

Namelist Variable	Type	Group
`cfl_all_levels` Flag to write some CFL diagnostics for all vertical levels. Default: .false.	logical	diagnostics_nml
`diag_all_levels` Flag to write some global diagnostics for all vertical levels. Default: .false.	logical	diagnostics_nml
`diag_cfl_freq` Frequency of CFL diagnostics. Default: 1	integer	diagnostics_nml
`diag_cfl_freq_opt` Units of diag_cfl_freq (frequency of CFL diagnostics). Valid Values: 'never', 'nyear', 'nmonth', 'nday', 'nhour', 'nsecond', 'nstep' Default: 'nmonth'	char*256	diagnostics_nml
`diag_global_freq` Frequency of global diagnostics. Default: 1	integer	diagnostics_nml
`diag_global_freq_opt` Units of diag_global_freq (frequency of global diagnostics). Valid Values: 'never', 'nyear', 'nmonth', 'nday', 'nhour', 'nsecond', 'nstep' Default: 'nmonth'	char*256	diagnostics_nml
`diag_outfile` Filename for diagnostic output. Default: '$RUNDIR/$CASENAME.pop.dd'	char*256	diagnostics_nml
`diag_transp_freq` Frequency of transport diagnostics. Default: 1	integer	diagnostics_nml
`diag_transp_freq_opt` Units of diag_transp_freq (frequency of transport diagnostics). Valid Values: 'never', 'nyear', 'nmonth', 'nday', 'nhour', 'nsecond', 'nstep' Default: 'nmonth'	char*256	diagnostics_nml
`diag_transport_file` Filename for choosing fields for output. Default: Set by CESM scripts based on ocean grid	char*256	diagnostics_nml
`diag_transport_outfile` Filename for transport output. Default: '$RUNDIR/$CASENAME.pop.dt'	char*256	diagnostics_nml
`diag_velocity_outfile` Filename for velocity output. Default: '$RUNDIR/$CASENAME.pop.dv'	char*256	diagnostics_nml
`ldiag_bsf` Flag for barotropic stream function diagnostics. Default: .true.	logical	bsf_diagnostic_nml
`ldiag_global_tracer_budgets` Flag for global budget diagnostics for tracers. Default: .true.	logical	budget_diagnostics_nml
`ldiag_velocity` Flag to compute velocity diagnostics. Default: .true.	logical	diagnostics_nml

POP2: Restart Control

Namelist Variable	Type	Group
`even_odd_freq` Frequency to write even/odd restart files (units = nstep). Default: 100000	integer	restart_nml
`leven_odd_on` Flag to turn even_odd restarts on. Default: .false.	logical	restart_nml
`pressure_correction` Flag to fix pressure for exact restart. Default: .false.	logical	restart_nml
`restart_fmt` restart_outfile format (binary or netCDF). Valid Values: 'bin', 'nc' Default: 'nc'	char*256	restart_nml
`restart_freq` Restart frequency. Default: 100000	integer	restart_nml
`restart_freq_opt` Units of restart_freq (restart frequency). Valid Values: 'never', 'nyear', 'nmonth', 'nday', 'nhour', 'nsecond', 'nstep' Default: 'nyear'	char*256	restart_nml
`restart_outfile` Restart output filename root. Default: '$RUNDIR/$CASENAME.pop.r'	char*256	restart_nml
`restart_start` Wait prior to beginning to output restart files. Default: 0	integer	restart_nml
`restart_start_opt` Units of restart_start (when to begin writing regular restart files). Default: 'nstep'	char*256	restart_nml

POP2: History Output

Namelist Variable	Type	Group
`history_contents` Filename for choosing fields for output in history file. Default: Set by CESM scripts based on ocean grid	char*256	history_nml
`history_fmt` history_outfile format (binary or netCDF). Valid Values: 'bin', 'nc' Default: 'nc'	char*256	history_nml
`history_freq` Frequency of writing history files. Default: 1	integer	history_nml
`history_freq_opt` Units of history_freq (frequency of writing history files). Valid Values: 'never', 'nyear', 'nmonth', 'nday', 'nhour', 'nsecond', 'nstep' Default: 'never'	char*256	history_nml
`history_outfile` Root filename for history files. Default: '$CASENAME.pop.hs'	char*256	history_nml
`movie_contents` Filename for choosing fields for output in movie file. Default: Set by CESM scripts based on ocean grid	char*256	movie_nml
`movie_fmt` movie_outfile format (binary or netCDF). Valid Values: 'bin', 'nc' Default: 'nc'	char*256	movie_nml
`movie_freq` Frequency of writing movie files. Default: 1	integer	movie_nml
`movie_freq_opt` Units of movie_freq (frequency of writing movie files). Valid Values: 'never', 'nyear', 'nmonth', 'nday', 'nhour', 'nsecond', 'nstep' Default: 'never'	char*256	movie_nml
`movie_outfile` Root filename for movie files. Default: '$CASENAME.pop.hm'	char*256	movie_nml

POP2: Solvers

Namelist Variable	Type	Group
`convergencecheckfreq` Frequency (number of steps) in which to check check for convergence. Default: 10	integer	solvers
`convergencecriterion` Convergence error criterion. Default: 1.0e-13	real	solvers
`maxiterations` Max number of solver iterations. Default: 1000	integer	solvers
`preconditionerchoice` Preconditioner choice. Valid Values: 'diagonal', 'file' Default: 'diagonal'	char*256	solvers
`preconditionerfile` File containing the preconditioner (if preconditionerChoice='file'). Default: 'unknownPrecondFile'	char*256	solvers
`solverchoice` Solver to use for elliptic system for surface pressure in barotropic mode. Valid Values: 'pcg', 'ChronGear' Default: 'ChronGear'	char*256	solvers

POP2: Vertical Mixing

Namelist Variable	Type	Group
`aidif` Time-centering parameter for implicit vertical mixing. Default: 1.0	real	vertical_mix_nml
`bckgrnd_vdc` Background value for diffusivity. Default: 0.1	real	vmix_rich_nml
`bckgrnd_vvc` Background value for viscosity. Default: 1.0	real	vmix_rich_nml
`bottom_drag` Drag coefficient for bottom drag. Default: 1.0e-3	real	vertical_mix_nml
`bottom_heat_flx` Bottom (geothermal) heat flux [W/m^2]. Default: 0.0	real	vertical_mix_nml
`bottom_heat_flx_depth` Depth below which bottom heat is applied. Default: 1000.0e2	real	vertical_mix_nml
`const_vdc` Constant value for diffusivity. Default: 0.25	real	vmix_const_nml
`const_vvc` Constant value for viscosity. Default: 0.25	real	vmix_const_nml
`convect_diff` Tracer diffusion to use for convection. Default: 10000.0	real	vertical_mix_nml
`convect_visc` Viscosity to use for convection (momentum). Default: 10000.0	real	vertical_mix_nml
`convection_type` Method for convection. Valid Values: 'adjustment', 'diffusion' Default: 'diffusion'	char*256	vertical_mix_nml
`implicit_vertical_mix` Flag for computing vertical mixing implicitly in time. Default: .true.	logical	vertical_mix_nml
`lniw_mixing` Flag for using near inertial wave mixing. Default: .false.	logical	niw_nml
`nconvad` Number of times to convectively adjust. Default: 2	integer	vertical_mix_nml
`niw_boundary_layer_absorption` Fraction of near inertial wave energy absorbed in the boundary layer. Default: 0.7	real	niw_nml
`niw_energy_file` Input file for reading near inertial wave energy flux. Default: Resolution-dependent	char*256	niw_nml
`niw_energy_file_fmt` niw_energy_file_fmt (binary or netCDF). Valid Values: 'bin', 'nc' Default: 'bin'	char*256	niw_nml
`niw_energy_type` Type (internal or external) for near inertial wave energy source. Default: 'blke'	char*256	niw_nml
`niw_local_mixing_fraction` Fraction of near inertial wave energy available for mixing local to the generation region. Default: 0.5	real	niw_nml
`niw_mix_max` Maximum diffusivity for near inertial waves (cm^2/s). Default: 100.0	real	niw_nml
`niw_mixing_efficiency` Mixing efficiency (portion producing mixing rather than thermal heating). Default: 0.2	real	niw_nml
`niw_obs2model_ratio` Ratio between observed and modeled near inertial wave strength. Default: 2.0	real	niw_nml
`niw_vert_decay_scale` Vertical decay scale for turbulence (cm). Default: 500.0e02	real	niw_nml
`rich_mix` Coefficient for Richardson number term. Default: 50.0 Note: You must specify both the variable name and namelist name if you change this variable in user_nl_pop2!	real	vmix_rich_nml
`vmix_choice` Vertical mixing parameterization. Valid Values: 'const', 'rich', 'kpp' Default: 'kpp'	char*256	vertical_mix_nml

POP2: KPP

Namelist Variable	Type	Group
`bckgrnd_vdc1` Background diffusivity (Ledwell). Default: 0.16	real	vmix_kpp_nml
`bckgrnd_vdc2` Variation in diffusivity. Default: 0.0	real	vmix_kpp_nml
`bckgrnd_vdc_ban` Banda Sea diffusivity (Gordon). Default: 1.0	real	vmix_kpp_nml
`bckgrnd_vdc_dpth` Depth at which diffusivity equals vdc1 Default: 1000.0e02	real	vmix_kpp_nml
`bckgrnd_vdc_eq` Equatorial diffusivity (Gregg). Default: 0.01	real	vmix_kpp_nml
`bckgrnd_vdc_linv` Inverse length for transition region. Default: 4.5e-05	real	vmix_kpp_nml
`bckgrnd_vdc_psim` Maximum PSI-induced diffusivity (MacKinnon). Default: 0.13	real	vmix_kpp_nml
`lcheckekmo` Flag to check Ekman, Monin-Obhukov depth limit. Default: .false.	logical	vmix_kpp_nml
`ldbl_diff` Flag for computing double-diffusive mixing. Default: .true.	logical	vmix_kpp_nml
`lhoriz_varying_bckgrnd` Flag to allow horizontally-varying background (need bckgrnd_vdc2=0.0). Default: .true.	logical	vmix_kpp_nml
`linertial` Flag for using inertial mixing parameterization. Default: .false.	logical	vmix_kpp_nml
`llangmuir` Flag for using Langmuir parameterization. Default: .false.	logical	vmix_kpp_nml
`lrich` Flag for computing Ri-dependent mixing. Default: .true.	logical	vmix_kpp_nml
`lshort_wave` Flag for computing short-wave forcing. Default: .true.	logical	vmix_kpp_nml
`num_v_smooth_ri` Number of times to vertically smooth Ri. Default: 1	integer	vmix_kpp_nml
`prandtl` Prandtl number. Default: 10.0	real	vmix_kpp_nml
`rich_mix` Coefficient for Richardson number term. Default: 50.0 Note: You must specify both the variable name and namelist name if you change this variable in user_nl_pop2!	real	vmix_kpp_nml

POP2: Tidal

Namelist Variable	Type	Group
`local_mixing_fraction` Fraction of energy available for mixing local to the generation region. Default: 0.33	real	tidal_nml
`ltidal_mixing` Flag for tidal mixing. Default: .true.	logical	tidal_nml
`mixing_efficiency` Mixing efficiency. Default: 0.2	real	tidal_nml
`tidal_energy_file` Input file for reading tidal energy flux. Default: 'unknown_tidal_mixing'	char*256	tidal_nml
`tidal_energy_file_fmt` tidal_energy_file format (binary or netCDF). Valid Values: 'bin', 'nc' Default: 'bin'	char*256	tidal_nml
`tidal_mix_max` Maximum for vertical diffusivity and viscosity (cm^2/s). Default: 100.0	real	tidal_nml
`vertical_decay_scale` Vertical decay scale for turbulence (cm) Default: 500.0e02	real	tidal_nml

POP2: Horizontal Mixing

Namelist Variable	Type	Group
`ah` Horizontal tracer mixing coefficient. Default: 0.6e7 Note: You must specify both the variable name and namelist name if you change this variable in user_nl_pop2!	real	hmix_del2t_nml
`ah` Horizontal tracer mixing coefficient. Default: -0.2e20 Note: You must specify both the variable name and namelist name if you change this variable in user_nl_pop2!	real	hmix_del4t_nml
`ah` Isopycnal diffusivity. Default: 3.0e7 Note: You must specify both the variable name and namelist name if you change this variable in user_nl_pop2!	real	hmix_gm_nml
`ah_bkg_bottom` Background horizontal diffusivity at k = KMT Default: 0.0	real	hmix_gm_nml
`ah_bkg_srfbl` Background horizontal diffusivity within the surface boundary layer. Default: 3.0e7	real	hmix_gm_nml
`ah_bolus` Thickness (GM bolus) diffusivity. Default: 3.0e7	real	hmix_gm_nml
`am` Horizontal momentum mixing coefficient. Default: 0.5e8 Note: You must specify both the variable name and namelist name if you change this variable in user_nl_pop2!	real	hmix_del2u_nml
`am` Horizontal momentum mixing coefficient. Default: -0.6e20 Note: You must specify both the variable name and namelist name if you change this variable in user_nl_pop2!	real	hmix_del4u_nml
`buoyancy_freq_filename` File name for the time-dependent buoyancy frequency (squared). Default: '$RUNDIR/buoyancy_freq'	char*256	hmix_gm_nml
`buoyancy_freq_fmt` buoyancy_freq_filename format (binary or netCDF). Valid Values: 'bin', 'nc' Default: 'nc'	char*256	hmix_gm_nml
`c_para` Dimensionless Smagorinksi coefficient parallel to alignment direction. Default: 8.0	real	hmix_aniso_nml
`c_perp` Dimensionless Smagorinksi coefficient perpendicular to alignment direction. Default: 8.0	real	hmix_aniso_nml
`const_eg` Unitless tuning parameter. Default: 1.2	real	hmix_gm_nml
`diag_gm_bolus` Flag for diagnostic bolus velocity computation. Default: .true.	logical	hmix_gm_nml
`efficiency_factor` Efficiency factor: must be between 0.06 and 0.08 [inclusive]. Default: 0.07	real	mix_submeso_nml
`gamma_eg` Effective upper limit for inverse eddy timescale (unitless). Default: 500.0	real	hmix_gm_nml
`hmix_alignment_choice` Direction that breaks isotropy. Valid Values: 'flow', 'east', 'grid' Default: 'east'	char*256	hmix_aniso_nml
`hmix_momentum_choice` Type of horizontal momentum mixing. Valid Values: 'del2', 'del4', 'anis', 'gent' Default: 'anis'	char*256	hmix_nml
`hmix_tracer_choice` Type of horizontal tracer mixing. Valid Values: 'del2','del4','gent' Default: 'gent'	char*256	hmix_nml
`hor_length_scale` Constant horizontal length scale in cm (if luse_const_horiz_len_scale=.true.). Default: 5.0e5 (5 km)	real	mix_submeso_nml
`kappa_depth_1` 1 of 2 parameters for variation of KAPPA with kappa_type_depth option. Default: 1.0	real	hmix_gm_nml
`kappa_depth_2` 1 of 2 parameters for variation of KAPPA with kappa_type_depth option. Default: 0.0	real	hmix_gm_nml
`kappa_depth_scale` Depth scale for variation of KAPPA with kappa_type_depth. Default: 150000.0	real	hmix_gm_nml
`kappa_freq_choice` Frequency of KAPPA computation. Valid Values: 'never', 'every_time_step', 'once_a_day' Default: 'once_a_day'	char*256	hmix_gm_nml
`kappa_isop_choice` Choice for KAPPA_ISOP (isopycnal). Valid Values: 'cons', 'depth', 'vmhs', 'hdgr', 'drad', 'bfre', 'bfvm', 'bfhd', 'bfdr', 'edgr' Default: 'bfre'	char*256	hmix_gm_nml
`kappa_max_eg` Maximum value for KAPPA (cm^2/s). Default: 2.0e7	real	hmix_gm_nml
`kappa_min_eg` Minimum value for KAPPA (cm^2/s). Default: 0.35e7	real	hmix_gm_nml
`kappa_thic_choice` Choice for KAPPA_THIC (thickness). Valid Values: 'cons', 'depth', 'vmhs', 'hdgr', 'drad', 'bfre', 'bfvm', 'bfhd', 'bfdr', 'edgr' Default: 'bfre'	char*256	hmix_gm_nml
`lauto_hmix` Flag to internally compute mixing coefficient. Default: .false. Note: You must specify both the variable name and namelist name if you change this variable in user_nl_pop2!	logical	hmix_del2t_nml
`lauto_hmix` Flag to internally compute mixing coefficient. Default: .false. Note: You must specify both the variable name and namelist name if you change this variable in user_nl_pop2!	logical	hmix_del2u_nml
`lauto_hmix` Flag to internally compute mixing coefficient. Default: .false. Note: You must specify both the variable name and namelist name if you change this variable in user_nl_pop2!	logical	hmix_del4t_nml
`lauto_hmix` Flag to internally compute mixing coefficient. Default: .false. Note: You must specify both the variable name and namelist name if you change this variable in user_nl_pop2!	logical	hmix_del4u_nml
`lsmag_aniso` Flag to use nonlinear Smagorinski viscosities (c_para/perp and u_para/perp) rather than input anisotropic viscosities (visc_para/perp). Default: .false.	logical	hmix_aniso_nml
`lsubmesoscale_mixing` Flag for submesoscale mixing. Default: .true.	logical	hmix_nml
`luse_const_horiz_len_scale` Flag to use constant horizontal length scale given by hor_length_scale rather than varying length scale with space and time. Default: .false.	logical	mix_submeso_nml
`lvariable_hmix` Flag to enable spatially-varying mixing. Default: .false. Note: You must specify both the variable name and namelist name if you change this variable in user_nl_pop2!	logical	hmix_del2t_nml
`lvariable_hmix` Flag to enable spatially-varying mixing. Default: .false. Note: You must specify both the variable name and namelist name if you change this variable in user_nl_pop2!	logical	hmix_del2u_nml
`lvariable_hmix` Flag to enable spatially-varying mixing. Default: .false. Note: You must specify both the variable name and namelist name if you change this variable in user_nl_pop2!	logical	hmix_del4t_nml
`lvariable_hmix` Flag to enable spatially-varying mixing. Default: .false. Note: You must specify both the variable name and namelist name if you change this variable in user_nl_pop2!	logical	hmix_del4u_nml
`lvariable_hmix_aniso` Flag to allow spatially variable anisotropic viscosity. Default: .true.	logical	hmix_aniso_nml
`read_n2_data` Flag to use climatoligical N^2 data instead of model-dependent N^2. Default: .false.	logical	hmix_gm_nml
`slm_b` Maximum slope allowed for bolus transport. Default: 0.3	real	hmix_gm_nml
`slm_r` Maximum slope allowed for redi diffusion. Default: 0.3	real	hmix_gm_nml
`slope_control_choice` Choice for slope control. Valid Values: 'tanh', 'notanh', 'clip', 'Gerd' Default: 'notanh'	char*256	hmix_gm_nml
`smag_lat` Latitude at which to vary perpendicular Smagorinsky viscosity. Default: 20.0	real	hmix_aniso_nml
`smag_lat_fact` Coefficient of latitude-dependent Smagorinsky viscosity. Default: 0.98	real	hmix_aniso_nml
`smag_lat_gauss` Gaussian width of latitude-dependent Smagorinksy viscosity. Default: 98.0	real	hmix_aniso_nml
`time_scale_constant` Time scale constant in seconds -- must be between 1 and 4 days [86400 and 345600 seconds]. Default: 8.64e4 (1 day)	real	mix_submeso_nml
`transition_layer_on` Flag for transition layer parameterization. Default: .true.	logical	hmix_gm_nml
`u_para` Velocity for grid Reynolds number viscous limit (parallel to alignment direction). Default: 5.0	real	hmix_aniso_nml
`u_perp` Velocity for grid Reynolds number viscous limit (perpendicular to alignment direction). Default: 5.0	real	hmix_aniso_nml
`use_const_ah_bkg_srfbl` Flag to use ag_bkg_srfbl as maxmium background horizontal diffusivity within the surface boundary layer (rather than using KAPPA_ISOP). Default: .true.	logical	hmix_gm_nml
`var_viscosity_infile` File name for variable viscosity factor. Default: 'ccsm-internal'	char*256	hmix_aniso_nml
`var_viscosity_infile_fmt` var_viscosity_infile format (binary or netCDF). Valid Values: 'bin', 'nc' Default: 'bin'	char*256	hmix_aniso_nml
`var_viscosity_outfile` File for output of internally-computed viscosity. Default: '$RUNDIR/$CASENAME.pop.hv'	char*256	hmix_aniso_nml
`var_viscosity_outfile_fmt` var_viscosity_outfile format (binary or netCDF). Valid Values: 'bin', 'nc' Default: 'nc'	char*256	hmix_aniso_nml
`vconst_1` 1 of 7 coefficients for variable viscosity form. Units are cm^2/s. Default: 0.6e7	real	hmix_aniso_nml
`vconst_2` 1 of 7 coefficients for variable viscosity form. Default: 0.5	real	hmix_aniso_nml
`vconst_3` 1 of 7 coefficients for variable viscosity form. Default: 0.16	real	hmix_aniso_nml
`vconst_4` 1 of 7 coefficients for variable viscosity form. Units are 1/cm. Default: 2.e-8	real	hmix_aniso_nml
`vconst_5` 1 of 7 coefficients for variable viscosity form. Default: 3	integer	hmix_aniso_nml
`vconst_6` 1 of 7 coefficients for variable viscosity form. Units are cm^2/s. Default: 0.6e7	real	hmix_aniso_nml
`vconst_7` 1 of 7 coefficients for variable viscosity form. Units are degrees of latitude. Default: 45.0	real	hmix_aniso_nml
`visc_para` Viscosity parallel to alignment direction. Default: 50.0e7	real	hmix_aniso_nml
`visc_perp` Viscosity perpendicular to alignment direction. Default: 50.0e7	real	hmix_aniso_nml

POP2: State Settings

Namelist Variable	Type	Group
`state_choice` Which equation of state to use. Valid Values: 'jmcd', 'mwjf', 'poly', 'line' Default: 'mwjf'	char*256	state_nml
`state_file` File containing polynomial equation of state coefficients. Default: 'internal'	char*256	state_nml
`state_range_freq` Frequency (in steps) for checking validity of temperature and salinity ranges. Default: 100000	integer	state_nml
`state_range_opt` Option for checking for valid temperature and salinity ranges. Valid Values: 'ignore', 'check', 'enforce' Default: 'enforce'	char*256	state_nml

POP2: Baroclinic

Namelist Variable	Type	Group
`reset_to_freezing` Flag to prevent very cold water. Default: .false.	logical	baroclinic_nml

POP2: Ice

Namelist Variable	Type	Group
`ice_freq` Frequency with which to compute ice (units of ice_freq_opt). Default: 100000	integer	ice_nml
`ice_freq_opt` Option for frequency of computing ice. Valid Values: 'never', 'coupled', 'nyear', 'nmonth', 'nday', 'nhour', 'nsecond', 'nstep' Default: 'coupled'	char*256	ice_nml
`kmxice` Lowest level from which to integrate ice formation. Default: 1	integer	ice_nml
`lactive_ice` Flag for whether POP is coupled to an active ice model. Default: Depends on $OCN_ICE_FORCING ("inactive" => .false.)	logical	ice_nml

POP2: Pressure Gradient

Namelist Variable	Type	Group
`lbouss_correct` Flag for adding correction to Boussinesq approximation. Default: .false.	logical	pressure_grad_nml
`lpressure_avg` Flag to turn on averaging of pressure across three time steps. Default: .true.	logical	pressure_grad_nml

POP2: Topo Stress

Namelist Variable	Type	Group
`ltopostress` Flag to turn on topographic stress. Default: .false.	logical	topostress_nml
`nsmooth_topo` Number of passes the topography smoother will make. Default: 0	integer	topostress_nml

POP2: Forcing

Namelist Variable	Type	Group
`ap_data_inc` Increment (in hours) between forcing times if ap_data_type='n-hour'. Default: 1.e20	real	forcing_ap_nml
`ap_data_renorm` Renormalization constants for the components in the atmospheric pressure forcing file. Default: 20*1.	real(20)	forcing_ap_nml
`ap_data_type` Type or periodicity of atmospheric forcing. Valid Values: 'none', 'analytic', 'annual', 'monthly', 'monthly-equal', 'monthly-calendar', 'n-hour' Default: 'none'	char*256	forcing_ap_nml
`ap_file_fmt` ap_filename format (binary or netCDF) Valid Values: 'bin', 'nc' Default: 'bin'	char*256	forcing_ap_nml
`ap_filename` Name of file containing atmospheric pressure forcing, or root of filenames if ap_data_type='n-hour'. Default: 'unknown-ap'	char*256	forcing_ap_nml
`ap_interp_freq` How often to temporally interpolate atmospheric forcing data to current time. Valid Values: 'never','n-hour','every-timestep' Default: 'never'	char*256	forcing_ap_nml
`ap_interp_inc` Increment (in hours) between interpolation times if ap_interp_freq = 'n-hour'. Default: 1e20	real	forcing_ap_nml
`ap_interp_type` Type of temporal interpolation for atmospheric pressure forcing data. Valid Values: 'nearest', 'linear', '4point' Default: 'nearest'	char*256	forcing_ap_nml
`ladjust_precip` Adjust precipitation to balance water budget. LANL Default: .false. CESM Default: .true. if sfwf_formulation='partially-coupled', .false. otherwise	logical	forcing_sfwf_nml
`lfw_as_salt_flx` Treat fresh water flux as virtual salt flux when using varthick sfc layer. LANL Default: .false. CESM Default: .true.	logical	forcing_sfwf_nml
`lms_balance` Balance E, P, M, R, and S in marginal seas. LANL Default: N/A, CESM only CESM Default: .true. if sfwf_formulation='partially-coupled', .false. otherwise	logical	forcing_sfwf_nml
`lsend_precip_fact` Flag for sending precip_fact to CESM coupler for use in fresh-water balance. LANL Default: N/A, CESM only CESM Default: .true. if sfwf_formulation='partially-coupled', .false. otherwise	logical	forcing_sfwf_nml
`luse_cpl_ifrac` Flag to control use of fractional ice coverage. LANL Default: N/A, CESM only CESM Default: .true. if shf_formulation='partially-coupled', .false. otherwise	logical	forcing_shf_nml
`pt_interior_data_inc` Increment (hours) between forcing times if pt_interior_data_type='n-hour'. LANL Default: 1e20 CESM Default: 24	real	forcing_pt_interior_nml
`pt_interior_data_renorm` Renormalization constants for components in interior potential temperature forcing file. Default: 20*1.	real(20)	forcing_pt_interior_nml
`pt_interior_data_type` Type or periodicity of interior potential temperature forcing. Valid Values: 'none', 'annual', 'monthly', 'monthly-equal', 'monthly-calendar', 'n-hour' Default: 'none'	char*256	forcing_pt_interior_nml
`pt_interior_file_fmt` pt_interior_filename format (binary or netCDF). Valid Values: 'bin', 'nc' Default: 'bin'	char*256	forcing_pt_interior_nml
`pt_interior_filename` File containing interior potential temperature data, or root of filenames if pt_interior_data_type='n--hour'. Default: 'unknown-pt_interior'	char*256	forcing_pt_interior_nml
`pt_interior_formulation` Interior potential temperature formulation. Default: 'restoring'	char*256	forcing_pt_interior_nml
`pt_interior_interp_freq` How often to temporally interpolate interior potential temperature data to current time. Valid Values: 'never', 'n-hour', 'every-timestep' LANL Default: 'never' CESM Default: 'every-timestep'	char*256	forcing_pt_interior_nml
`pt_interior_interp_inc` Increment (hours) between interpolation times if interp_freq='n-hour' LANL Default: 1e20 CESM Default: 72	real	forcing_pt_interior_nml
`pt_interior_interp_type` Type of temporal interpolation for interior potential temperature data. Valid Values: 'nearest', 'linear', '4point' LANL Default: 'nearest' CESM Default: 'linear'	char*256	forcing_pt_interior_nml
`pt_interior_restore_file_fmt` pt_interior_restore_filename format (binary or netCDF). Valid Values: 'bin', 'nc' Default: 'bin'	char*256	forcing_pt_interior_nml
`pt_interior_restore_filename` Name of file containing variable interior potential temperature restoring data. Default: 'unknown-pt_interior_restore'	char*256	forcing_pt_interior_nml
`pt_interior_restore_max_level` Maximum level for interior potential temperature restoring. Default: 0	integer	forcing_pt_interior_nml
`pt_interior_restore_tau` Restoring timescale (days) if pt_interior_formulation='restoring'. LANL Default: 1e20 CESM Default: 365	real	forcing_pt_interior_nml
`pt_interior_variable_restore` Enable variable interior potential temperature restoring. Default: .false.	logical	forcing_pt_interior_nml
`s_interior_data_inc` Increment (hours) between forcing times if s_interior_data_type='n-hour'. LANL Default: 1e20 CESM Default: 24	real	forcing_s_interior_nml
`s_interior_data_renorm` Renormalization constants for components in interior salinity forcing file. Default: 20*1.	real(20)	forcing_s_interior_nml
`s_interior_data_type` Type or periodicity of interior salinity forcing. Valid Values: 'none', 'annual' ,'monthly', 'monthly-equal', 'monthly-calendar', 'n-hour' Default: 'none'	char*256	forcing_s_interior_nml
`s_interior_file_fmt` s_interior_filename format (binary or netCDF) Valid Values: 'bin', 'nc' Default: 'bin'	char*256	forcing_s_interior_nml
`s_interior_filename` Name of file containing interior salinity data, or root of filenames if s_interior_data_type='n-hour'. Default: 'unknown-s_interior'	char*256	forcing_s_interior_nml
`s_interior_formulation` Interior salinity formulation. Default: 'restoring'	char*256	forcing_s_interior_nml
`s_interior_interp_freq` How often to temporally interpolate interior salinity data to current time. Valid Values: 'never', 'n-hour', 'every-timestep' LANL Default: 'never' CESM Default: 'every-timestep'	char*256	forcing_s_interior_nml
`s_interior_interp_inc` Increment (hours) between interpolation times if s_interior_interp_freq='n-hour'. LANL Default: 1e20 CESM Default: 72	real	forcing_s_interior_nml
`s_interior_interp_type` Type of temporal interpolation for interior salinity data. Valid Values: 'nearest', 'linear', '4point' LANL Default: 'nearest' CESM Default: 'linear'	char*256	forcing_s_interior_nml
`s_interior_restore_file_fmt` s_interior_restore_filename format (binary or netCDF). Valid Values: 'bin', 'nc' Default: 'bin'	char*256	forcing_s_interior_nml
`s_interior_restore_filename` Name of file containing variable interior salinity restoring data. Default: 'unknown-s_interior_restore'	char*256	forcing_s_interior_nml
`s_interior_restore_max_level` Maximum level for interior salinity restoring. Default: 0	integer	forcing_s_interior_nml
`s_interior_restore_tau` Restoring timescale (days) if s_interior_formulation='restoring'. LANL Default: 1e20 CESM Default: 365	real	forcing_s_interior_nml
`s_interior_variable_restore` Enable variable interior salinity restoring. Default: .false.	logical	forcing_s_interior_nml
`sfwf_data_inc` Increment (hours) between forcing times if sfwf_data_type='n-hour'. LANL Default: 1e20 CESM Default: 24.	real	forcing_sfwf_nml
`sfwf_data_renorm` Renormalization constants for components in sfwf forcing file. LANL Default: 201. CESM Default: 0.001, 191.	real(20)	forcing_sfwf_nml
`sfwf_data_type` Type or periodicity of surface fresh water flux forcing. Valid Values: 'none', 'analytic', 'annual', 'monthly', 'monthly-equal', 'monthly-calendar', 'n-hour' LANL Default: 'analytic' CESM Default: 'none' or 'monthly'	char*256	forcing_sfwf_nml
`sfwf_file_fmt` sfwf_filename format (binary or netCDF). Valid Values: 'bin', 'nc' Default: 'bin'	char*256	forcing_sfwf_nml
`sfwf_filename` Name of file containing surface fresh water flux data, or root of filenames if sfwf_data_type='n-hour'. LANL Default: 'unknown_sfwf' CESM Default: '$sfwf_filename', auto-filled by CESM scripts	char*256	forcing_sfwf_nml
`sfwf_formulation` Surface fresh water flux formulation. Valid Values: 'restoring', 'bulk-NCEP', 'partially-coupled' LANL Default: 'restoring' CESM Default: 'restoring' or 'partially-coupled', depending on configuration	char*256	forcing_sfwf_nml
`sfwf_interp_freq` How often to temporally interpolate surface fresh water flux data to current time. Valid Values: 'never', 'n-hour', 'every-timestep' LANL Default: 'never' CESM Default: 'every-timestep'	char*256	forcing_sfwf_nml
`sfwf_interp_inc` Increment (hours) between interpolation times if sfwf_interp_freq='n-hour'. LANL Default: 1e20 CESM Default: 72.	real	forcing_sfwf_nml
`sfwf_interp_type` Type of temporal interpolation for surface fresh water flux data. Valid Values: 'nearest', 'linear', '4point' LANL Default: 'nearest' CESM Default: 'linear'	char*256	forcing_sfwf_nml
`sfwf_restore_tau` Restoring timescale (days) if sfwf_formulation='restoring'. LANL Default: 1e20 CESM Default: 30.	real	forcing_sfwf_nml
`sfwf_strong_restore` Restoring flux for strong restoring in 'bulk-NCEP' and 'partially-coupled' formulation. LANL Default: 0.6648 CESM Default: 0.0	real	forcing_sfwf_nml
`sfwf_strong_restore_ms` Restoring flux for strong restoring over marginal seas in CESM 'bulk-NCEP' and 'partially-coupled' formulations. LANL Default: N/A, CESM only CESM Default: 0.6648	real	forcing_sfwf_nml
`sfwf_weak_restore` Restoring flux for weak restoring in 'bulk-NCEP' and 'partially-coupled' formulation. LANL Default: 0.092 CESM Default: 0.0115	real	forcing_sfwf_nml
`shf_data_inc` Increment (in hours) between forcing times if shf_data_type='n-hour'. LANL Default: 1e20 CESM Default: 24.	real	forcing_shf_nml
`shf_data_renorm` Renormalization constants for the components in the surface heat flux forcing file. LANL Default: 201. CESM Default: (0.94, 191.)	real(20)	forcing_shf_nml
`shf_data_type` Type or periodicity of surface heat flux forcing. Valid Values='none', 'analytic', 'annual', 'monthly', 'monthly-equal', 'monthly-calendar', 'n-hour' LANL Default: 'analytic' CESM Default: 'monthly' if formulation is 'partially-coupled', 'none' otherwise	char*256	forcing_shf_nml
`shf_file_fmt` shf_filename format (binary or netCDF) Valid Values: 'bin', 'nc' Default: 'bin'	char*256	forcing_shf_nml
`shf_filename` Name of file containing surface heat flux data, or root of filenames if shf_data_type='n-hour'. LANL Default: 'unknown-shf' CESM Default: '$shf_filename', auto-filled by CESM scripts	char*256	forcing_shf_nml
`shf_formulation` Surface heat flux formation. Valid Values: 'restoring', 'Barnier-restoring', 'bulk-NCEP', 'partially-coupled' LANL Default: 'restoring' CESM Default: 'partially-coupled' or 'restoring' depending on configuration	char*256	forcing_shf_nml
`shf_interp_freq` How often to temporally interpolate surface heat flux data to current time. Valid Values: 'never', 'n-hour', 'every-timestep' LANL Default: 'never' CESM Default: 'every-timestep'	char*256	forcing_shf_nml
`shf_interp_inc` Increment (in hours) between interpolation times if shf_interp_freq = 'n-hour'. LANL Default: 1e20 CESM Default: 72.	real	forcing_shf_nml
`shf_interp_type` Type of temporal interpolation for surface heat flux data. LANL Default: 'nearest' CESM Default: 'linear'	char*256	forcing_shf_nml
`shf_restore_tau` Restoring timescale (days) if shf_formulation='restoring'. LANL Default: 1e20 CESM Default: 30.	real	forcing_shf_nml
`shf_strong_restore` Restoring flux for strong restoring in bulk-NCEP LANL Default: 92.64 CESM Default: 0.0	real	forcing_shf_nml
`shf_strong_restore_ms` Restoring flux for strong restoring over marginal seas in bulk-NCEP LANL Default: N/A, CESM only CESM Default: 92.64	real	forcing_shf_nml
`shf_weak_restore` Restoring flux for weak restoring in bulk-NCEP Default: 0.	real	forcing_shf_nml
`ws_data_inc` Increment (in hours) between forcing times if ws_data_type='nhour'. LANL Default: 1e20 CESM Default: 24.	real	forcing_ws_nml
`ws_data_renorm` Renormalization constants for the components in the wind stress forcing file. LANL Default: 201. CESM Default: 10., 191.	real(20)	forcing_ws_nml
`ws_data_type` Type or periodicity of wind stress forcing. Valid Values: 'none', 'analytic', 'annual', 'monthly', 'monthly-calendar', 'monthly-equal', 'n-hour' LANL Default: 'analytic' CESM Default: 'none'	char*256	forcing_ws_nml
`ws_file_fmt` ws_filename format (binary of netCDF) Valid Values: 'bin', 'nc' Default: 'bin'	char*256	forcing_ws_nml
`ws_filename` Name of file containing wind stress, or root of filenames if ws_data_type='n-hour' Default: 'unknown-ws'	char*256	forcing_ws_nml
`ws_interp_freq` How often to temporally interpolate wind stress data to current time; value in namelist is ignored and value set to 'never' if ws_data_type is 'analytic', 'none', or 'annual'. Valid Values: 'never', 'n-hour', 'every-timestep' LANL Default: 'never' CESM Default: 'every-timestep'	char*256	forcing_ws_nml
`ws_interp_inc` Increment (in hours) between interpolation times if ws_interp_freq = 'n-hour'. LANL Default: 1e20 CESM Default: 72.	real	forcing_ws_nml
`ws_interp_type` Type of temporal interpolation for wind stress data. Valid Values: 'nearest', 'linear', '4point' LANL Default: 'nearest' CESM Default: 'linear'	char*256	forcing_ws_nml

POP2: Coupling Control

Namelist Variable Type Group

Namelist Variable	Type	Group
`coupled_freq` Frequency POP is coupled to atmosphere / sea ice models via CESM flux coupler (units given by coupled_freq_opt). Default: 24	integer	coupled_nml
`coupled_freq_opt` Units of coupled_freq (frequency POP is coupled to atmosphere / sea ice models via CESM flux coupler). Valid Values: 'nyear', 'nmonth', 'nday', 'nhour', 'nsecond', 'nstep', 'never' Default: 'nhour'	char*256	coupled_nml
`qsw_distrb_opt` Option for distributing net shortwave heat flux over a coupling interval (all options preserve time-integrated flux). Valid Values: 'const','12hr','cosz' Default: 'cosz'	char*256	coupled_nml


          coupled_freq

Frequency POP is coupled to atmosphere / sea ice models via CESM flux coupler (units given by coupled_freq_opt).


Default:  24

integer

coupled_nml


          coupled_freq_opt

Units of coupled_freq (frequency POP is coupled to atmosphere / sea ice models via CESM flux coupler).

Valid Values: 'nyear', 'nmonth', 'nday', 'nhour', 'nsecond', 'nstep', 'never'

Default: 'nhour'

char*256

coupled_nml


          qsw_distrb_opt

Option for distributing net shortwave heat flux over a coupling interval (all options preserve time-integrated flux).

Valid Values: 'const','12hr','cosz'

Default: 'cosz'

char*256

coupled_nml

POP2: Shortwave Absorbtion

Namelist Variable	Type	Group
`chl_file_fmt` chl_filename format (binary or netCDF). Valid Values: 'bin', 'nc' Default: 'bin'	char*256	sw_absorption_nml
`chl_filename` Chlorophyll input filename. Default: auto-filled by CESM scripts	char*256	sw_absorption_nml
`chl_option` Chlorophyll option. Valid Values: 'file', 'model' Default: auto-filled by CESM scripts	char*256	sw_absorption_nml
`jerlov_water_type` Jerlov water type. Valid Values: 1-5 (correspond to I, IA, IB, II, and III, respectively) Default: 3	integer	sw_absorption_nml
`sw_absorption_type` Short-wave absorption type. Valid Values: 'top-layer', 'jerlov', 'chlorophyll' Default: 'chlorophyll'	char*256	sw_absorption_nml

POP2: Transport Diagnostic Control

Namelist Variable	Type	Group
`lat_aux_begin` Beginning latitude for the auxiliary grid (degrees north). Default: -90.0	real	transports_nml
`lat_aux_end` Ending latitude for the auxiliary grid (degrees north). Default: 90.0	real	transports_nml
`lat_aux_grid_type` Type of the auxiliary latitudinal grid. Valid Values: 'southern', 'full', 'user-specified' Default: 'southern'	char*256	transports_nml
`moc_requested` Flag for turning on output for meridional overturning circulation. Default: .true. for displaced pole grids, .false. for tripole grids.	logical	transports_nml
`n_heat_trans_requested` Flag for outputting northward heat transport. Default: .true. for displaced pole grids, .false. for tripole grids.	logical	transports_nml
`n_lat_aux_grid` Auxiliary grid dimension. Default: 180	integer	transports_nml
`n_salt_trans_requested` Flag for outputting northward salt transport. Default: .true. for displaced pole grids, .false. for tripole grids.	logical	transports_nml
`n_transport_reg` Number of regions for all transport diagnostics. Default: 2	integer	transports_nml
`transport_reg2_names` Names of the selected input regions when n_transport_reg = 2. Default: 'Atlantic Ocean','Mediterranean Sea','Labrador Sea','GIN Sea','Arctic Ocean','Hudson Bay'	char*256(6)	transports_nml

POP2: Context for Coupling POP2

Namelist Variable	Type	Group
`b4b_flag` Flag to run POP in bit-for-bit mode. Default: .false.	logical	context_nml
`lccsm` Flag to run pop in the CESM context. Default: .true.	logical	context_nml
`lccsm_control_compatible` Flag to run POP with code that is bit-for-bit with the ccsm4 control run. (According to source notes, this option should have been removed in ccsm4_0_1!). Default: .false.	logical	context_nml
`lcoupled` Flag for whether POP is coupled to another system. Default: .true.	logical	context_nml

POP2: Overflows

Namelist Variable	Type	Group
`overflows_diag_outfile` File for writing overflow diagnostics output. Default: '$RUNDIR/$CASENAME.do'	char*256	overflows_nml
`overflows_infile` File with overflow information. Default: Set by CESM scripts based on ocean grid.	char*256	overflows_nml
`overflows_interactive` Flag for using interactive overflows. Default: .true. for displaced pole grids, .false. for tripole grids.	logical	overflows_nml
`overflows_on` Flag for using parameterized overflows. Default: .true. for displaced pole grids, .false. for tripole grids.	logical	overflows_nml
`overflows_restart_type` Overflow restart type. Valid Values: 'ccsm_startup', 'ccsm_continue', 'ccsm_hybrid', 'ccsm_branch' Default: 'ccsm_$RUNTYPE'	char*256	overflows_nml
`overflows_restfile` Overflow restart file name. Default: '$RUNDIR/$CASENAME.ro'	char*256	overflows_nml

POP2: TAVG Settings

Namelist Variable	Type	Group
`ltavg_has_offset_date` Default: .false. .false. .false.	logical(9)	tavg_nml
`ltavg_ignore_extra_streams` Default: .false.	logical	tavg_nml
`ltavg_nino_diags_requested` Default: .true.	logical	tavg_nml
`ltavg_one_time_header` Default: .false. .false. .false.	logical(9)	tavg_nml
`ltavg_streams_index_present` Default: .true.	logical	tavg_nml
`n_tavg_streams` Default: 3	integer	tavg_nml
`tavg_contents` Default: ' '	char*256	tavg_nml
`tavg_file_freq` Default: 1 1 1	integer(9)	tavg_nml
`tavg_file_freq_opt` Default: 'nmonth' 'nmonth' 'once'	char*256(9)	tavg_nml
`tavg_fmt_in` Default: 'nc' 'nc' 'nc'	char*256(9)	tavg_nml
`tavg_fmt_out` Default: 'nc' 'nc' 'nc'	char*256(9)	tavg_nml
`tavg_freq` Default: 1 1 1	integer(9)	tavg_nml
`tavg_freq_opt` Default: 'nmonth' 'nday' 'once'	char*256(9)	tavg_nml
`tavg_infile` Default: ' '	char*256	tavg_nml
`tavg_offset_days` Default: 2 2 2	integer(9)	tavg_nml
`tavg_offset_months` Default: 1 1 1	integer(9)	tavg_nml
`tavg_offset_years` Default: 1 1 1	integer(9)	tavg_nml
`tavg_outfile` Default: ' '	char*256	tavg_nml
`tavg_start` Default: 0 0 0	integer(9)	tavg_nml
`tavg_start_opt` Default: 'nstep' 'nstep' 'nstep'	char*256(9)	tavg_nml
`tavg_stream_filestrings` Default: 'nmonth1' 'nday1' 'once'	char*256(9)	tavg_nml

POP2: Passive Tracer Settings

Namelist Variable	Type	Group
`cfc_formulation` Flux formulation. Valid Values: 'ocmip', 'model' Default: 'model'	char*256	cfc_nml
`cfc_on` Flag for using cfc module. Default: 'Set by CESM scripts based on $OCN_TRACER_MODULES'	logical	passive_tracers_on_nml
`data_year` Year in data that corresponds to model_year. Default: 1850 for 1850-2000 transient run, 1981 otherwise.	integer	cfc_nml
`ecosys_on` Flag for using ecosys module. Default: 'Set by CESM scripts based on $OCN_TRACER_MODULES'	logical	passive_tracers_on_nml
`gas_flux_ap%default_val` Default:	real	cfc_nml
`gas_flux_ap%file_fmt` Default:	char*256	cfc_nml
`gas_flux_ap%file_varname` Default:	char*256	cfc_nml
`gas_flux_ap%filename` Default:	char*256	cfc_nml
`gas_flux_ap%mod_varname` Default:	char*256	cfc_nml
`gas_flux_ap%scale_factor` Default:	real	cfc_nml
`gas_flux_fice%default_val` Default:	real	cfc_nml
`gas_flux_fice%file_fmt` Default:	char*256	cfc_nml
`gas_flux_fice%file_varname` Default:	char*256	cfc_nml
`gas_flux_fice%filename` Default:	char*256	cfc_nml
`gas_flux_fice%mod_varname` Default:	char*256	cfc_nml
`gas_flux_fice%scale_factor` Default:	real	cfc_nml
`gas_flux_ws%default_val` Default:	real	cfc_nml
`gas_flux_ws%file_fmt` Default:	char*256	cfc_nml
`gas_flux_ws%file_varname` Default:	char*256	cfc_nml
`gas_flux_ws%filename` Default:	char*256	cfc_nml
`gas_flux_ws%mod_varname` Default:	char*256	cfc_nml
`gas_flux_ws%scale_factor` Default:	real	cfc_nml
`iage_on` Flag for using iage module. Default: 'Set by CESM scripts based on $OCN_TRACER_MODULES'	logical	passive_tracers_on_nml
`init_cfc_init_file` Filename for initializing cfc (if init_cfc_option='file'). Default: 'same_as_TS'	char*256	cfc_nml
`init_cfc_init_file_fmt` init_cfc_init_file format (binary or netCDF). Valid Values: 'bin', 'nc' Default: 'bin'	char*256	cfc_nml
`init_cfc_option` Option for initialization of cfc. Valid Values: 'ccsm_startup', 'zero', 'ccsm_startup_spunup', 'restart', 'ccsm_continue', 'ccsm_branch', 'ccsm_hybrid', 'file' Default: Set by CESM scripts ('zero' for starting 1850-2000 transient run, 'ccsm_$runtype'otherwise)	char*256	cfc_nml
`init_iage_init_file` Filename for initializing iage (if init_iage_option='file'). Default: 'same_as_TS'	char*256	iage_nml
`init_iage_init_file_fmt` init_iage_init_file format (binary or netCDF). Valid Values: 'bin', 'nc' Default: 'bin'	char*256	iage_nml
`init_iage_option` Option for initialization of iage. Valid Values: 'ccsm_startup', 'zero', 'ccsm_startup_spunup', 'restart', 'ccsm_continue', 'ccsm_branch', 'ccsm_hybrid', 'file' Default: 'ccsm_$RUNTYPE'	char*256	iage_nml
`moby_on` Flag for using moby module. Default: 'Set by CESM scripts based on $OCN_TRACER_MODULES'	logical	passive_tracers_on_nml
`model_year` Arbitrary model year. Default: 1850 for 1850-2000 transient run, 1 otherwise.	integer	cfc_nml
`pcfc_file` File name for ascii time series of atm cfc11. Default: '$DIN_LOC_ROOT/ocn/pop/res_indpt/forcing/pcfc1112_atm_20091117.nc'	char*256	cfc_nml
`tracer_init_ext%default_val` Default:	real	cfc_nml
`tracer_init_ext%default_val` Default:	real	iage_nml
`tracer_init_ext%file_fmt` Default:	char*256	cfc_nml
`tracer_init_ext%file_fmt` Default:	char*256	iage_nml
`tracer_init_ext%file_varname` Default:	char*256	cfc_nml
`tracer_init_ext%file_varname` Default:	char*256	iage_nml
`tracer_init_ext%filename` Default:	char*256	cfc_nml
`tracer_init_ext%filename` Default:	char*256	iage_nml
`tracer_init_ext%mod_varname` Default:	char*256	cfc_nml
`tracer_init_ext%mod_varname` Default:	char*256	iage_nml
`tracer_init_ext%scale_factor` Default:	real	cfc_nml
`tracer_init_ext%scale_factor` Default:	real	iage_nml

POP2: Ecosystem Settings

Namelist Variable	Type	Group
`atm_co2_const` Default:	real	ecosys_nml
`atm_co2_opt` Default:	char*256	ecosys_nml
`comp_surf_avg_freq` Default:	integer	ecosys_nml
`comp_surf_avg_freq_opt` Default:	char*256	ecosys_nml
`dust_flux_input%default_val` Default:	real	ecosys_nml
`dust_flux_input%file_fmt` Default:	char*256	ecosys_nml
`dust_flux_input%file_varname` Default:	char*256	ecosys_nml
`dust_flux_input%filename` Default:	char*256	ecosys_nml
`dust_flux_input%mod_varname` Default:	char*256	ecosys_nml
`dust_flux_input%scale_factor` Default:	real	ecosys_nml
`ecosys_qsw_distrb_const` Default:	logical	ecosys_nml
`ecosys_tadvect_ctype` Default:	char*256	ecosys_nml
`fesedflux_input%default_val` Default:	real	ecosys_nml
`fesedflux_input%file_fmt` Default:	char*256	ecosys_nml
`fesedflux_input%file_varname` Default:	char*256	ecosys_nml
`fesedflux_input%filename` Default:	char*256	ecosys_nml
`fesedflux_input%mod_varname` Default:	char*256	ecosys_nml
`fesedflux_input%scale_factor` Default:	real	ecosys_nml
`gas_flux_ap%default_val` Default:	real	ecosys_nml
`gas_flux_ap%file_fmt` Default:	char*256	ecosys_nml
`gas_flux_ap%file_varname` Default:	char*256	ecosys_nml
`gas_flux_ap%filename` Default:	char*256	ecosys_nml
`gas_flux_ap%mod_varname` Default:	char*256	ecosys_nml
`gas_flux_ap%scale_factor` Default:	real	ecosys_nml
`gas_flux_fice%default_val` Default:	real	ecosys_nml
`gas_flux_fice%file_fmt` Default:	char*256	ecosys_nml
`gas_flux_fice%file_varname` Default:	char*256	ecosys_nml
`gas_flux_fice%filename` Default:	char*256	ecosys_nml
`gas_flux_fice%mod_varname` Default:	char*256	ecosys_nml
`gas_flux_fice%scale_factor` Default:	real	ecosys_nml
`gas_flux_forcing_file` Default:	char*256	ecosys_nml
`gas_flux_forcing_opt` Default:	char*256	ecosys_nml
`gas_flux_ws%default_val` Default:	real	ecosys_nml
`gas_flux_ws%file_fmt` Default:	char*256	ecosys_nml
`gas_flux_ws%file_varname` Default:	char*256	ecosys_nml
`gas_flux_ws%filename` Default:	char*256	ecosys_nml
`gas_flux_ws%mod_varname` Default:	char*256	ecosys_nml
`gas_flux_ws%scale_factor` Default:	real	ecosys_nml
`init_ecosys_init_file` Default:	char*256	ecosys_nml
`init_ecosys_init_file_fmt` Default: 'nc'	char*256	ecosys_nml
`init_ecosys_option` Default:	char*256	ecosys_nml
`iron_flux_input%default_val` Default:	real	ecosys_nml
`iron_flux_input%file_fmt` Default:	char*256	ecosys_nml
`iron_flux_input%file_varname` Default:	char*256	ecosys_nml
`iron_flux_input%filename` Default:	char*256	ecosys_nml
`iron_flux_input%mod_varname` Default:	char*256	ecosys_nml
`iron_flux_input%scale_factor` Default:	real	ecosys_nml
`iron_patch_flux_filename` Default:	char*256	ecosys_nml
`iron_patch_month` Default:	char*256	ecosys_nml
`lecovars_full_depth_tavg` Default:	logical	ecosys_nml
`lflux_gas_co2` Default:	logical	ecosys_nml
`lflux_gas_o2` Default:	logical	ecosys_nml
`liron_patch` Default:	logical	ecosys_nml
`lmarginal_seas` Default:	logical	ecosys_nml
`lnutr_variable_restore` Default:	logical	ecosys_nml
`locmip_k1_k2_bug_fix` Default:	logical	ecosys_nml
`lrest_no3` Default: .false.	logical	ecosys_nml
`lrest_po4` Default: .false.	logical	ecosys_nml
`lrest_sio3` Default: .false.	logical	ecosys_nml
`lsource_sink` Default:	logical	ecosys_nml
`ndep_data_type` Default:	char*256	ecosys_nml
`ndep_shr_stream_file` Default:	char*256	ecosys_nml
`ndep_shr_stream_scale_factor` Default:	real	ecosys_nml
`ndep_shr_stream_year_align` Default:	integer	ecosys_nml
`ndep_shr_stream_year_first` Default:	integer	ecosys_nml
`ndep_shr_stream_year_last` Default:	integer	ecosys_nml
`nhy_flux_monthly_input%default_val` Default:	real	ecosys_nml
`nhy_flux_monthly_input%file_fmt` Default:	char*256	ecosys_nml
`nhy_flux_monthly_input%file_varname` Default:	char*256	ecosys_nml
`nhy_flux_monthly_input%filename` Default:	char*256	ecosys_nml
`nhy_flux_monthly_input%mod_varname` Default:	char*256	ecosys_nml
`nhy_flux_monthly_input%scale_factor` Default:	real	ecosys_nml
`no3_rest%default_val` Default:	real	ecosys_nml
`no3_rest%file_fmt` Default:	char*256	ecosys_nml
`no3_rest%file_varname` Default:	char*256	ecosys_nml
`no3_rest%filename` Default:	char*256	ecosys_nml
`no3_rest%mod_varname` Default:	char*256	ecosys_nml
`no3_rest%scale_factor` Default:	real	ecosys_nml
`nox_flux_monthly_input%default_val` Default:	real	ecosys_nml
`nox_flux_monthly_input%file_fmt` Default:	char*256	ecosys_nml
`nox_flux_monthly_input%file_varname` Default:	char*256	ecosys_nml
`nox_flux_monthly_input%filename` Default:	char*256	ecosys_nml
`nox_flux_monthly_input%mod_varname` Default:	char*256	ecosys_nml
`nox_flux_monthly_input%scale_factor` Default:	real	ecosys_nml
`nutr_rest_file` Default: 'unknown'	char*256	ecosys_nml
`nutr_variable_rest_file` Default:	char*256	ecosys_nml
`nutr_variable_rest_file_fmt` Default:	char*256	ecosys_nml
`po4_rest%default_val` Default:	real	ecosys_nml
`po4_rest%file_fmt` Default:	char*256	ecosys_nml
`po4_rest%file_varname` Default:	char*256	ecosys_nml
`po4_rest%filename` Default:	char*256	ecosys_nml
`po4_rest%mod_varname` Default:	char*256	ecosys_nml
`po4_rest%scale_factor` Default:	real	ecosys_nml
`rest_time_inv_deep` Default:	real	ecosys_nml
`rest_time_inv_surf` Default:	real	ecosys_nml
`rest_time_inv_z0` Default:	real	ecosys_nml
`rest_time_inv_z1` Default:	real	ecosys_nml
`sio3_rest%default_val` Default:	real	ecosys_nml
`sio3_rest%file_fmt` Default:	char*256	ecosys_nml
`sio3_rest%file_varname` Default:	char*256	ecosys_nml
`sio3_rest%filename` Default:	char*256	ecosys_nml
`sio3_rest%mod_varname` Default:	char*256	ecosys_nml
`sio3_rest%scale_factor` Default:	real	ecosys_nml
`surf_avg_alk_const` Default:	real	ecosys_nml
`surf_avg_dic_const` Default:	real	ecosys_nml
`tracer_init_ext%default_val` Default:	real	ecosys_nml
`tracer_init_ext%file_fmt` Default:	char*256	ecosys_nml
`tracer_init_ext%file_varname` Default:	char*256	ecosys_nml
`tracer_init_ext%filename` Default:	char*256	ecosys_nml
`tracer_init_ext%mod_varname` Default:	char*256	ecosys_nml
`tracer_init_ext%scale_factor` Default:	real	ecosys_nml
`use_nml_surf_vals` Default:	logical	ecosys_nml