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.

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

Scheduled Downtime

POP2 Component Model Namelist Variables

POP2: Decomp Settings

POP2: Grid Settings

POP2: IO Settings

POP2: Time Manager Settings

POP2: TS Initialization

POP2: Diagnostics

POP2: Restart Control

POP2: History Output

POP2: Solvers

POP2: Vertical Mixing

POP2: KPP

POP2: Tidal

POP2: Horizontal Mixing

POP2: State Settings

POP2: Baroclinic

POP2: Ice

POP2: Pressure Gradient

POP2: Topo Stress

POP2: Forcing

POP2: Coupling Control

POP2: Shortwave Absorbtion

POP2: Transport Diagnostic Control

POP2: Context for Coupling POP2

POP2: Overflows

POP2: TAVG Settings

POP2: Passive Tracer Settings

POP2: Ecosystem Settings

NSF NCAR

UCAR