Toggle neural network (FKB) aerosol activation correction ON/OFF Toggle FKB aerosol activation test ON/OFF Full pathname of neural network (FKB) model weight for aerosol activation emulator Full pathname of neural network (FKB) model weight for Smax emulator Toggle neural network (FKB) aerosol optics options Full pathname of neural network (FKB) model weight for aerosol optics Full pathname of neural network (FKB) model weight for aerosol optics Toggle Model Nudging ON/OFF. Default: FALSE User-defined flag to inform Nudging if all nudged data files exist. 1. If .false.: all nudged data files must show up during the whole nudging period. Otherwise, the model will exit if a nudged data file is not found. 2. If .true.: user allows the model to continue to run even if a nudged data file is not found. The model will continue to run with the nudging turned off, and only a warning message will be added to the simulation log file. Default: FALSE Full pathname of analyses data to use for nudging. Default: none Template for Nudging analyses file names. Default: none Number of analyses files per day. Default: none Number of time to update model data per day. Default: none Profile index for U nudging. Default: none Coeffcient for U nudging. Default: none Profile index for V nudging. Default: none Coeffcient for V nudging. Default: none Profile index for T nudging. Default: none Coeffcient for T nudging. Default: none Profile index for Q nudging. Default: none Coeffcient for Q nudging. Default: none Profile index for PS nudging. Default: none Coeffcient for PS nudging. Default: none Year at which Nudging Begins. Default: none Month at which Nudging Begins. Default: none Day at which Nudging Begins. Default: none Year at which Nudging Ends. Default: none Month at which Nudging Ends. Default: none Day at which Nudging Ends. Default: none LOW Coeffcient for Horizontal Window. Default: none HIGH Coeffcient for Horizontal Window. Default: none LAT0 of Horizonalt Window. Default: none Width of LAT Window. Default: none Steepness of LAT Window. Default: none LON0 of Horizontal Window. Default: none Width of LON Window. Default: none Steepness of LON Window. Default: none LOW Coeffcient for Vertical Window. Default: none HIGH Coeffcient for Vertical Window. Default: none HIGH Level Index for Verical Window. Default: none Steepness of HIGH end of Vertical Window. Default: none LOW Level Index for Verical Window. Default: none Steepness of LOW end of Vertical Window. Default: none Method to perform Nudging analyses. 1. Step: the model meteorology is nudged toward the same (future) time slice of the constraining data within each nudging window (e.g., 6-hr). 2. Linear: the model meteorology is nudged toward the state at the next model time step, which is linearly interpolated between two neighboring time slices of the constraining data. 3. IMT: the model meteorology is nudged toward the constraining data at the same model time step and nudging is only applied when the constrainging data is available. Default: Linear Use user-defined relaxation time scale (unit: hour). If Nudge_Tau > 0, the relaxation time scale is determined by Nudge_Tau; If not, the relaxation time scale is determined by Nudge_Times_Per_Day and nudging strength specified in the namelist (e.g. Nudge_Ucoef). Default: -999 If TRUE, change the location of calculation of nudging tendency to the same location where the model state variables are written out. If FALSE, calculate the nudging tendency at the beginning of tphysbc (the same as the default model). Default: TRUE Linearly interpolate nudging data to current (set to TRUE) or future (set to FALSE, used by the default model) model time step. Default: FALSE Number of time slices per nudging data file The current nudging code only works for the nudging data file with one-day data. It does not work correctly when the nudging data file contains multiple-day data. Thus, Nudge_File_Ntime has to equal to 1 or Nudge_Times_Per_Day. Set default Nudge_File_Ntime to 0 to force the user to set its value correctly. Default: 0 Full pathname of time-variant boundary dataset for aerosol masses. Default: set by build-namelist. Add CAM3 prescribed aerosols to the physics buffer. Default: FALSE The basic data structure for fields in the physics is the chunk. The horizontal (column) dimension is factored between the first chunk dimension and the number of chunks, with the size of the first dimension influencing serial performance (e.g. vectorization or fit into cache) and the number of chunks limiting the available MPI and OpenMP parallelism. The number of chunks is always chosen to provide an equal number of chunks per computational thread (subject to the constraint that each chunk is assigned at least one column). However, the declared size of the first dimension is a free parameter, indicating the maximum number of columns that can be assigned to a chunk (thus also impacting the total number of chunks). This was originally specified at compile-time, based on experiments in the early 2000s indicating that the compilers at the time generated more efficient code when the first dimension was known at compile time, perhaps for improved alignment in memory layout or improved vectorization. This is now exposed as a runtime parameter. If phys_chnk_fdim is greater then 0, then the runtime pcols parameter is set to phys_chnk_fdim. If phys_chnk_fdim is less than or equal to 0, then pcols is calculated based on the values of the namelist variables phys_loadbalance, phys_chnk_fdim_max, and phys_chnk_fdim_mult, and on the problem specifics, attempting to minimize load imbalance between chunks, wasted space within chunks, and the number of chunks. The original compile-time behavior can be restored by defining the CPP token PPCOLS when building the model, in which case the original compile-time maximum (PCOLS) is still used. Note that PPCOLS is defined when the '-pcols' option is specifed in the call to CAM configure, in which case PCOLS is set to value of the '-pcols' argument. Default: 0 If phys_chnk_fdim is less than 1 (so runtime pcols is calculated) and phys_chnk_fdim_max is greater than 0, then phys_chnk_fdim_max is an upper bound on the size of the runtime pcols parameter. Otherwise it is ignored. Default: 16 when no overriding rules. See namelist_defaults_eam.xml If phys_chnk_fdim is less than 1 (so runtime pcols is calculated) and phys_chnk_fdim_mult is greater than 1 and either phys_chnk_fdim_max is less than 1 (so ignored) or phys_chnk_fdim_mult is less than or equal to phys_chnk_fdim_max, then the runtime pcols is required to be an integer multiple of phys_chnk_fdim_mult. This can be useful for memory alignment of local variables. Default: 1 when no overriding rules. See namelist_defaults_eam.xml Dynamics/physics transpose method for nonlocal load-balance. 0: use mpi_alltoallv. 1: use point-to-point MPI-1 two-sided implementation. 2: use point-to-point MPI-2 one-sided implementation if supported, otherwise use MPI-1 implementation. 3: use Co-Array Fortran implementation if supported, otherwise use MPI-1 implementation. 11-13: use mod_comm, choosing any of several methods internal to mod_comm. The method within mod_comm (denoted mod_method) has possible values 0,1,2 and is set according to mod_method = phys_alltoall - modmin_alltoall, where modmin_alltoall is 11. -1: use option 1 when each process communicates with less than half of the other processes, otherwise use option 0 (approx.). Default: -1 Enable/disable output of measured physics cost per chunk. Default: .true. Select target number of chunks per thread. Must be positive. Default: 1 Physics grid decomposition options. -1: each chunk is a dynamics block. 0: chunk definitions and assignments do not require interprocess comm. 1: chunk definitions and assignments do not require internode comm. 2: optimal diurnal, seasonal, and latitude load-balanced chunk definition and assignments. 3: chunk definitions and assignments only require communication with one other process. 4: concatenated blocks, no load balancing, no interprocess communication. Default: 0 Physics grid decomposition options. 0: assign columns to chunks as single columns, wrap mapped across chunks 1: use (day/night; north/south) twin algorithm to determine load-balanced pairs of columns and assign columns to chunks in pairs, wrap mapped Default: 0 for unstructured grid dycores, 1 for lat/lon grid dycores Output constituent tendencies due to convection. Set to 'none', 'q_only' or 'all'. Default: 'q_only', but 'none' for WACCM configurations. Turns on TEM circulation diagnostics history output. Only valid for FV dycore. do_circulation_diags MUST be .true. in all FV cases with WACCM's QBO forcing enabled. Cases with qbo_use_forcing = .true. and do_circulation_diags = .false. will produce invalid output. Default: .true. for WACCM, otherwise .false. Turn on verbose output identifying columns that fail energy/water conservation checks. Default: FALSE Number of layers from the top of the model over which to do dry convective adjustment. Must be less than plev (the number of vertical levels). Default: 3 Overlapping of trac2d and cd_core subcycles. Default: 0 1 for FFT filter always, 0 for combined algebraic/FFT filter. The value 0 is used for CAM3, otherwise it is using the value 1. In the CAM3 version of the model it was necessary to build with the CPP variable ALT_PFT defined to get the behavior now obtained by setting fft_flt=1. Default: set by build-namelist Chooses type of divergence damping and velocity diffusion. div24del2flag = 2 for ldiv2 (default), = 4 for ldiv4, = 42 for ldiv4 + ldel2 where ldiv2: 2nd-order divergence damping everywhere and increasing in top layers ldiv4: 4th-order divergence damping ldel2: 2nd-order velocity-component damping targetted to top layers, with coefficient del2coef Default: set by build-namelist Chooses level of velocity diffusion. Default: 3.0e5 Enables optional filter for intermediate c-grid winds, (courtesy of Bill Putman). Default: 0 Set to 1 to force the 2D transpose computation when a 1D decomposition is used. This is intended for debugging purposes only. Default: 0 Geopotential method (routines geopk, geopk16, or geopk_d). 0 for transpose method, 1 for method using semi-global z communication with optional 16-byte arithmetic, 2 for method using local z communication; method 0, method 1 with 16-byte arithmetic and method 2 are all bit-for-bit across decompositions; method 0 scales better than method 1 with npr_z, and method 1 is superior to method 0 for small npr_z. The optimum speed is attained using either method 1 with 8-byte arithmetic (standard for geopk16) or method 2 when utilizing the optimal value for the associated parameter geopkblocks; for the last two subcycles of a timestep, method 0 is automatically used; see geopk.F90 and cd_core.F90. Default: 0 Geopotential method 2 pipeline parameter (routine geopk_d). geopk_d implements a pipeline algorithm by dividing the information that must be moved between processes into blocks. geopkblocks specifies the number of blocks to use. The larger the number of blocks, the greater the opportunity for overlapping communication with computation and for decreasing instantaneous bandwidth requirements. The smaller the number of blocks, the fewer MPI messages sent, decreasing MPI total latency. See geopk_d within geopk.F90. Default: 1 Mod_comm irregular underlying communication method for dyn_run/misc. 0 for original mp_sendirr/mp_recvirr 1 for mp_swapirr and a point-to-point implementation of communication pattern 2 for mp_swapirr and a collective (MPI_Alltoallv) implementation of communication pattern Default: 0 True for mod_comm irregular communication handshaking for dyn_run/misc Default: .true. True for mod_comm irregular communication blocking send for dyn_run/misc, false for nonblocking send Default: .true. Maximum number of outstanding nonblocking MPI requests to allow when using mp_swapirr and point-to-point communications for dyn_run/misc. Setting this less than the maximum can improve robustness for large process count runs. If set to less than zero, then do not limit the number of outstanding send/receive requests. Default: -1 (so no limit) Mod_comm irregular underlying communication method for cd_core/geopk 0 for original mp_sendirr/mp_recvirr 1 for mp_swapirr and a point-to-point implementation of communication pattern 2 for mp_swapirr and a collective (MPI_Alltoallv) implementation of communication pattern Default: 0 True for mod_comm irregular communication handshaking for cd_core/geopk Default: .true. True for geopk_d and mod_comm irregular communication blocking send for cd_core/geopk; false for nonblocking send. Default: .true. Maximum number of outstanding nonblocking MPI requests to allow when using mp_swapirr and point-to-point communications for cd_core/geopk. Setting this less than the maximum can improve robustness for large process count runs. If set to less than zero, then do not limit the number of outstanding send/receive requests. Default: -1 (so no limit) Mod_comm irregular underlying communication method for gather 0 for original mp_sendirr/mp_recvirr 1 for mp_swapirr and a point-to-point implementation of communication pattern 2 for mp_swapirr and a collective (MPI_Alltoallv) implementation of communication pattern Default: 0 True for mod_comm irregular communication handshaking for gather Default: .true. True for mod_comm irregular communication blocking send for gather, false for nonblocking send Default: .true. Maximum number of outstanding nonblocking MPI requests to allow when using mp_swapirr and point-to-point communications for gather. Setting this less than the maximum can improve robustness for large process count runs. If set to less than zero, then do not limit the number of outstanding send/receive requests. Default: -1 (so no limit) Mod_comm irregular underlying communication method for scatter 0 for original mp_sendirr/mp_recvirr 1 for mp_swapirr and a point-to-point implementation of communication pattern 2 for mp_swapirr and a collective (MPI_Alltoallv) implementation of communication pattern Default: 0 True for mod_comm irregular communication handshaking for scatter Default: .true. True for mod_comm irregular communication blocking send for scatter, false for nonblocking send Default: .true. Maximum number of outstanding nonblocking MPI requests to allow when using mp_swapirr and point-to-point communications for scatter. Setting this less than the maximum can improve robustness for large process count runs. If set to less than zero, then do not limit the number of outstanding send/receive requests. Default: -1 (so no limit) Mod_comm irregular underlying communication method for multiple tracers 0 for original mp_sendtrirr/mp_recvtrirr 1 for mp_swaptrirr and point-to-point communications 2 for mp_swaptrirr and all-to-all communications Default: 0 True for mod_comm irregular communication handshaking for multiple tracers Default: .true. True for mod_comm irregular communication blocking send for multiple tracers, false for nonblocking send Default: .true. Maximum number of outstanding nonblocking MPI requests to allow when using mp_swaptrirr and point-to-point communications for multiple tracers. Setting this less than the maximum can improve robustness for large process count runs. If set to less than zero, then do not limit the number of outstanding send/receive requests. Default: -1 (so no limit) One or two simultaneous mod_comm irregular communications (excl. tracers) Default: 1 Max number of tracers for simultaneous mod_comm irregular communications Default: 1 Order (mode) of X interpolation (1,..,6). East-West transport scheme (used with Finite Volume dynamical core only). Default: 4 Order (mode) of Y interpolation (1,..,6). North-South transport scheme (used with Finite Volume dynamical core only). Default: 4 Scheme to be used for vertical mapping. Default: 4 For mod_comm gather/scatters, 0 for temporary contiguous buffers; 1 for mpi derived types. Default: 0 For geopk (geopktrans=1) messages, 0 for temporary contiguous buffers; 1 for mpi derived types. Default: 0 For mod_comm transposes, 0 for temporary contiguous buffers; 1 for mpi derived types. Default: 0 A four element integer array which specifies the YZ and XY decompositions. The first two elements are the number of Y subdomains and number of Z subdomains in the YZ decomposition. The second two elements are the number of X subdomains and the number of Y subdomains in the XY decomposition. Note that both the X and Y subdomains must contain at least 3 grid points. For example, a grid with 96 latitudes can contain no more than 32 Y subdomains. There is no restriction on the number of grid points (levels) in a Z subdomain, but note that the threading parallelism in the FV dycore is over levels, so for parallel efficiency it is best to have at least the number of levels in each Z subdomain as there are threads available. There are a couple of rough rules of thumb to follow when setting the 2D decompositions. The first is that the number of Y subdomains in the YZ decomposition should be the same as the number of Y subdomains in the XY decomposition (npr_yz(1) == npr_yz(4)). The second is that the total number of YZ subdomains (npr_yz(1)*npr_yz(2)) should equal the total number of XY subdomains (npr_yz(3)*npr_yz(4)). Default: ntask,1,1,ntask where ntask is the number of MPI tasks. This is a 1D decomposition in latitude. Number of dynamics timesteps per physics timestep. If zero, a best-estimate will be automatically calculated. Default: 0 Number of tracer advection timesteps per physics timestep. Nsplit is partitioned into nspltrac and nsplit/nspltrac, with the latter being the number of dynamics timesteps per tracer timestep, possibly rounded upward; after initialization, the code quantity nsplit is redefined to be the number of dynamics timesteps per tracer timestep. Default: 0 Number of vertical re-mapping timesteps per physics timestep. Nspltrac is partitioned into nspltvrm and nspltrac/nspltvrm, with the latter being the number of tracer timesteps per re-mapping timestep, possibly rounded upward; after initialization, the code quantity nspltrac is redefined to be the number of tracer timesteps per re-mapping timestep. Default: 0 Size of tracer domain decomposition for trac2d. Default: 1 TRUE => the offline meteorology winds are defined on the model grid cell walls. Default: FALSE Name of file that contains the offline meteorology data. Default: none Name of directory that contains the offline meteorology data. Default: none Name of file that contains names of the offline meteorology data files. Default: none TRUE => the offline meteorology file will be removed from local disk when no longer needed. Default: FALSE (km) top of relaxation region of winds for offline waccm Default: (km) bottom of relaxation region of winds for offline waccm Default: maximum of vertical relaxation function in bottom portion Default: 1.0 switch to turn on/off mass fixer for offline driver Default: true srf heat flux field name in met data file Default: water vapor flux field name in met data file Default: multiplication factor for srf heat flux Default: 1.0 multiplication factor for water vapor flux Default: 1.0 multiplication factor for snow hieght Default: 1.0 if false then do not allow surface models feedbacks influence climate Default: true if true nudge meteorology surface fields TAUX, TAUY, SHFLX, QFLX rather than force Default: true Number of dynamics timesteps per physics timestep. If zero, a best-estimate will be automatically calculated. Default: 1 del^2 horizontal diffusion coefficient. Default: resolution dependent, e.g. 2.5e5 for T42 EUL. del^4 horizontal diffusion coefficient. Default: resolution dependent, e.g. 1.0e16 for T42 EUL. Number of days (from timestep 0) to run divergence damper. Use only if spectral model becomes dynamicallly unstable during initialization. Suggested value: 2. (Value must be >= 0.) Default: 0. Spectral dynamics gather option. Default: 0 Spectral dynamics transpose option. Default: 0 Flag indicating whether to assign latitudes to equidistribute columns or latitudes. This only matters when using a reduced grid. Default: TRUE Number of processes assigned to dynamics (SE, EUL and SLD dycores). Default: Total number of processes assigned to job. Stride for dynamics processes (EUL and SLD dycores). E.g., if stride=2, assign every second process to the dynamics. Default: 1 Time filter coefficient. Default: 0.06 Number of levels over which to apply Courant limiter, starting at top of model. Default: 5 Whether or not to use the new mass borrower (instead of QNEG3). Default: set by build-namelist. Whether or not to use the new qqflx fixer (instead of QNEG4). Default: set by build-namelist. Whether or not to printout fixer diagnostic message. Default: set by build-namelist. IEFLX fixer options Default: 0 Whether or not to enable gravity waves produced by orography. Default: set by build-namelist. Whether or not to enable gravity waves produced by frontogenesis. Default: set by build-namelist. Whether or not to enable gravity waves produced by convection. Default: set by build-namelist. Whether or not to enable GWD brute-force energy fix. Default: set by build-namelist. Gravity wave spectrum dimension (wave numbers are from -pgwv to pgwv). Default: set by build-namelist. Width of speed bins (delta c) for gravity wave spectrum (reference wave speeds are from -pgwv*dc to pgwv*dc). Default: set by build-namelist. Force the stress due to gravity waves to be zero at the top of the model. In the low-top model, this helps to conserve momentum and produce a QBO. Default: set by build-namelist. Heating rate conversion factor associated with convective gravity waves Default: 20.0 Efficiency associated with convective gravity waves from the Beres scheme. Default: set by build-namelist. Efficiency associated with gravity waves from frontogenesis. Default: set by build-namelist. Efficiency associated with orographic gravity waves. Default: set by build-namelist. Critical Froude number squared. Default: set by build-namelist. Frontogenesis function critical threshold. Default: set by build-namelist. Full pathname of Beres lookup table data file for gravity waves. Default: set by build-namelist. Background source strength (used for waves from frontogenesis). Default: set by build-namelist. Full pathname of time-variant boundary dataset for greenhouse gas surface values. Default: set by build-namelist. CH4 volume mixing ratio. This is used as the time invariant surface value of CH4 if no time varying values are specified. Default: set by build-namelist. CO2 volume mixing ratio. This is used as the time invariant surface value of CO2 if no time varying values are specified. Default: set by build-namelist. User override for the prescribed CO2 volume mixing ratio used by the radiation calculation. Note however that the prescribed value of CO2 which is sent to the surface models is still the one that is set using either the co2vmr or the scenario_ghg variables. Default: not used CFC11 volume mixing ratio adjusted to reflect contributions from many GHG species. This is used as the time invariant surface value of F11 if no time varying values are specified. Default: set by build-namelist. CFC12 volume mixing ratio. This is used as the time invariant surface value of CFC12 if no time varying values are specified. Default: set by build-namelist. N2O volume mixing ratio. This is used as the time invariant surface value of N2O if no time varying values are specified. Default: 0.311e-6 Data start year. Use in conjunction with ghg_yearstart_model. Default: 0 Model start year. Use in conjunction with ghg_yearstart_data. Default: 0 Amount of co2 ramping per year (percent). Only used if scenario_ghg = 'RAMP_CO2_ONLY' Default: 1.0 CO2 cap if > 0, floor otherwise. Specified as multiple or fraction of inital value; e.g., setting to 4.0 will cap at 4x initial CO2 setting. Only used if scenario_ghg = 'RAMP_CO2_ONLY' Default: boundless if ramp_co2_annual_rate > 0, zero otherwise. Date on which ramping of co2 begins. The date is encoded as an integer in the form YYYYMMDD. Only used if scenario_ghg = 'RAMP_CO2_ONLY' Default: 0 If scenario_ghg is set to "RAMPED" then the greenhouse gas surface values are interpolated between the annual average values read from the file specified by bndtvghg. In that case, the value of this variable (> 0) fixes the year of the lower bounding value (i.e., the value for calendar day 1.0) used in the interpolation. For example, if rampyear_ghg = 1950, then the GHG surface values will be the result of interpolating between the values for 1950 and 1951 from the dataset. Default: 0 Controls treatment of prescribed co2, ch4, n2o, cfc11, cfc12 volume mixing ratios. May be set to 'FIXED', 'RAMPED', 'RAMP_CO2_ONLY', or 'CHEM_LBC_FILE'. FIXED => volume mixing ratios are fixed and have either default or namelist input values. RAMPED => volume mixing ratios are time interpolated from the dataset specified by bndtvghg. RAMP_CO2_ONLY => only co2 mixing ratios are ramped at a rate determined by the variables ramp_co2_annual_rate, ramp_co2_cap, and ramp_co2_start_ymd. CHEM_LBC_FILE => volume mixing ratios are set from the chemistry lower boundary conditions dataset specified by flbc_file. Default: FIXED Full pathname of time-variant boundary dataset for greenhouse gas production/loss rates. Only used by the simple prognostic GHG chemistry scheme that is enabled via the argument "-prog_species GHG" to configure. Default: set by build-namelist. This variable should not be set by the user. It is set by build-namelist when the user specifies the argument "-prog_species GHG" to configure which turns on a simple prognostic chemistry scheme for CH4, N2O, CFC11 and CFC12. Default: set by build-namelist Flag to set rad_climate variable so that the prognostic CO2 controlled by the co2_cycle module is radiatively passive. Default: FALSE If TRUE turn on CO2 code. Default: FALSE If TRUE read co2 flux from fuel. Default: FALSE If TRUE read co2 flux from ocn. Default: FALSE If TRUE read co2 aircraft flux from file. Default: set by build-namelist Filepath for dataset containing CO2 flux from ocn. Default: none Filepath for dataset containing CO2 flux from fossil fuel. Default: none If TRUE print out CO2 conservation checks every timestep. Default: FALSE If TRUE print out CO2 conservation checks monthly. Default: FALSE If TRUE print out a CO2 conservation for the lenght of the run. Default: FALSE error tolerance for CO2 conservation Default: 5.e-13 List of fields to use as metrics in conditional sampling. Default: none Numbers of vertical levels of the metrics used in conditional sampling Different metrics can have different vertical dimension sizes. Default: none Types of comparison to be used in conditional sampling: -2 means .le., -1 means .lt., 0 means .eq. within tolerance, 1 means .gt., 2 means .ge.. Different metrics can have different comparison types. Default: none Thresholds to be used in conditional sampling. Different metrics can have different thresholds. Default: none Tolerances for the "equal to" comparison type if the type is specified using metric_cmpr_type. The values are ignored if other comparison types are specified. Default: none A list. Each element specifies the checkpoint at which the corresponding conditional sampling criterion will be evaluated. The number of checkpoints specified here should match the number of non-empty elements in metric_name; Default: none A list. Each element specifies the checkpoint that marks the end of validity of the corresponding sampling condition. At this checkpoint, the masking of QoIs will be done and the masked values will be sent to history buffer. Default: none List of fields (Quantities of Interest, QoIs) to be monitored or conditionally sampled. Default: none Dimension sizes of the QoIs. Default: none Whether a QoI should be multiplied by dp for output; if so, wet or dry. Default: none Checkpoints at which QoIs will be monitored or conditionally sampled. Default: none Whether QoIs at a checkpoint should be multiplied by dp for output if applicable; if so, wet or dry. Default: none Whether the state of the above-specified fields will be written to history file(s). Default: none Whether the increments of the above-specified fields will be written to history file(s). Default: none Indices of history tapes that will each contain a whole suite of CondiDiag output. Default: none Sets the averaging flag for all variables on a particular history file series. Valid values are: A ==> Average B ==> GMT 00:00:00 average I ==> Instantaneous M ==> Minimum X ==> Maximum The default is to use the averaging flags for each variable that are set in the code via calls to subroutine addfld. Defaults: set in code via the addfld and add_default subroutine calls. If true don't put any of the variables on the history tapes by default. Only output the variables that the user explicitly lists in the fincl# namelist items. Default: FALSE List of fields to exclude from the 1st history file (by default the name of this file contains the string "h0"). Default: none List of fields to exclude from the 2nd history file (by default the name of this file contains the string "h1"). Default: none List of fields to exclude from the 3rd history file (by default the name of this file contains the string "h2"). Default: none List of fields to exclude from the 4th history file (by default the name of this file contains the string "h3"). Default: none List of fields to exclude from the 5th history file (by default the name of this file contains the string "h4"). Default: none List of fields to exclude from the 6th history file (by default the name of this file contains the string "h5"). Default: none List of fields to exclude from the 7th history file (by default the name of this file contains the string "h6"). Default: none List of fields to exclude from the 8th history file (by default the name of this file contains the string "h7"). Default: none List of fields to exclude from the 9th history file (by default the name of this file contains the string "h8"). Default: none List of fields to exclude from the 10th history file (by default the name of this file contains the string "h9"). Default: none List of fields to exclude from the 11th history file (by default the name of this file contains the string "h10"). Default: none List of fields to exclude from the 12th history file (by default the name of this file contains the string "h11"). Default: none List of fields to exclude from the 13th history file (by default the name of this file contains the string "h12"). Default: none List of fields to exclude from the 14th history file (by default the name of this file contains the string "h13"). Default: none List of fields to exclude from the 15th history file (by default the name of this file contains the string "h14"). Default: none List of fields to include on the first history file (by default the name of this file contains the string "h0"). The added fields must be in Master Field List. The averaging flag for the output field can be specified by appending a ":" and a valid averaging flag to the field name. Valid flags are: A ==> Average B ==> GMT 00:00:00 average I ==> Instantaneous M ==> Minimum X ==> Maximum Default: set in code via the addfld and add_default subroutine calls. Same as fincl1, but for the 2nd history file (by default the name of this file contains the string "h1"). Default: none. Same as fincl1, but for the 3rd history file (by default the name of this file contains the string "h2"). Default: none. Same as fincl1, but for the 4th history file (by default the name of this file contains the string "h3"). Default: none. Same as fincl1, but for the 5th history file (by default the name of this file contains the string "h4"). Default: none. Same as fincl1, but for the 6th history file (by default the name of this file contains the string "h5"). Default: none. Same as fincl1, but for the 7th history file (by default the name of this file contains the string "h6"). Default: none. Same as fincl1, but for the 8th history file (by default the name of this file contains the string "h7"). Default: none. Same as fincl1, but for the 9th history file (by default the name of this file contains the string "h8"). Default: none. Same as fincl1, but for the 10th history file (by default the name of this file contains the string "h9"). Default: none. Same as fincl1, but for the 11th history file (by default the name of this file contains the string "h10"). Default: none. Same as fincl1, but for the 12th history file (by default the name of this file contains the string "h11"). Default: none. Same as fincl1, but for the 13th history file (by default the name of this file contains the string "h12"). Default: none. Same as fincl1, but for the 14th history file (by default the name of this file contains the string "h13"). Default: none. Same as fincl1, but for the 15th history file (by default the name of this file contains the string "h14"). Default: none. if .true. then output CLUBBs history statistics if .true. then output CLUBBs radiative history statistics Same as fincl1, but for CLUBB statistics on zt grid. Default: none. Same as fincl1, but for CLUBB statistics on zm grid. Default: none. Same as fincl1, but for CLUBB statistics on radiation zt grid. Default: none. Same as fincl1, but for CLUBB statistics on radiation zm grid. Default: none. Same as fincl1, but for CLUBB statistics on surface. Default: none. Name of the IOP case so case specific adjustments can be made in CLUBB. Default: none. Collect all column data into a single field and output in ncol format, much faster than default when you have a lot of columns. List of columns or contiguous columns at which the fincl1 fields will be output. Individual columns are specified as a string using a longitude degree (greater or equal to 0.) followed by a single character (e)ast/(w)est identifer, an underscore '_' , and a latitude degree followed by a single character (n)orth/(s)outh identifier. For example, '10e_20n' would pick the model column closest to 10 degrees east longitude by 20 degrees north latitude. A group of contiguous columns can be specified using bounding latitudes and longitudes separated by a colon. For example, '10e:20e_15n:20n' would select the model columns which fall with in the longitude range from 10 east to 20 east and the latitude range from 15 north to 20 north. Default: none Same as fincl1lonlat, but for 2nd history file. Same as fincl1lonlat, but for 3rd history file. Same as fincl1lonlat, but for 4th history file. Same as fincl1lonlat, but for 5th history file. Same as fincl1lonlat, but for 6th history file. Same as fincl1lonlat, but for 7th history file. Same as fincl1lonlat, but for 8th history file. Same as fincl1lonlat, but for 9th history file. Same as fincl1lonlat, but for 10th history file. Same as fincl1lonlat, but for 11th history file. Same as fincl1lonlat, but for 12th history file. Same as fincl1lonlat, but for 13th history file. Same as fincl1lonlat, but for 14th history file. Same as fincl1lonlat, but for 15th history file. Specific fields which will be written using the non-default precision on the 1st history file. Default: none Specific fields which will be written using the non-default precision on the 2nd history file. Default: none Specific fields which will be written using the non-default precision on the 3rd history file. Default: none Specific fields which will be written using the non-default precision on the 4th history file. Default: none Specific fields which will be written using the non-default precision on the 5th history file. Default: none Specific fields which will be written using the non-default precision on the 6th history file. Default: none Array of history filename specifiers. The filenames of up to fifteen history output files can be controlled via this variable. Filename specifiers give generic formats for the filenames with specific date and time components, file series number (0-14), and caseid, filled in when the files are created. The following strings are expanded when the filename is created: %c=caseid; %t=file series number (0-14); %y=year (normally 4 digits, more digits if needed); %m=month; %d=day; %s=seconds into current day; %%=% symbol. Note that the caseid may be set using the namelist variable case_name. For example, for a simulation with caseid="test" and current date and time of 0000-12-31 0:00UT, a filename specifier of "%c.cam2.h%t.%y-%m.nc" would expand into "test.cam2.h0.0000-12.nc" for the first history file. The filename specifier "%c.cam2.h%t.%y-%m-%d-%s.nc" would expand to "test.cam2.h1.0000-12-31-00000.nc" for the second history file. Spaces are not allowed in filename specifiers. Although the character "/" is allowed in the specifier, it will be interpreted as a directory name and the corresponding directories will have to be created in the model execution directory (directory given to configure with -cam_exedir option) before model execution. The first element is for the primary history file which is output by default as a monthly history file. Entries 2 through 15 are user specified auxilliary output files. Defaults: "%c.cam2.h0.%y-%m.nc", "%c.cam2.h1.%y-%m-%d-%s.nc", ..., "%c.cam2.h5.%y-%m-%d-%s.nc" Full pathname of the satellite track data used by the satellite track history output feature. Default: none Satellite track history filename specifier. See hfilename_spec Default: "%c.cam2.sat.%y-%m-%d-%s.nc" List of history fields to output along the satellite track specified by sathist_track_infile Default: none Sets the number of observation columns written the satellite track history file series. Default: 100000 Sets the number of columns closest to the observation that should be output. Setting this to a number greater than 1 allows for spatial interpolation in the post processing. Default: 1 Sets the number of timesteps closest to the observation that should be output. Setting this to a number greater than 1 allows for temporal interpolation in the post processing. Default: 1 Frequency that initial files will be output: 6-hourly, daily, monthly, yearly, or never. Valid values: 'NONE', 'NSTEPS','HOURLY', '6-HOURLY', 'DAILY', 'MONTHLY', 'YEARLY', 'CAMIOP', 'ENDOFRUN'. Default: 'YEARLY' Number of physics steps that initial files will be output. Used only when inithist == 'NSTEPS' Default: 1 If false then include only REQUIRED fields on IC file. If true then include required AND optional fields on IC file. Default: FALSE Array containing the maximum number of time samples written to a history file. The first value applies to the primary history file, the second through sixth to the auxillary history files. Default: 1,30,30,30,30,30,30,30,30,30,30,30,30,30,30 Array containing the starting time of day for local time history averaging. Used in conjuction with lcltod_stop. If lcltod_stop is less than lcltod_start, then the time range wraps around 24 hours. The start time is included in the interval. Time is in seconds and defaults to 39600 (11:00 AM). The first value applies to the primary hist. file, the second to the first aux. hist. file, etc. Default: none Array containing the stopping time of day for local time history averaging. Used in conjuction with lcltod_start. If lcltod_stop is less than lcltod_start, then the time range wraps around 24 hours. The stop time is not included in the interval. Time is in seconds and defaults to 0 (midnight). The first value applies to the primary hist. file, the second to the first aux. hist. file, etc. Default: none Array specifying the precision of real data written to each history file series. Valid values are 1 or 2. '1' implies output real values are 8-byte and '2' implies output real values are 4-byte. Default: 2,2,2,2,2,2,2,2,2,2 Array of write frequencies for each history file series. If nhtfrq(1) = 0, the file will be a monthly average. Only the first file series may be a monthly average. If nhtfrq(i) > 0, frequency is specified as number of timesteps. If nhtfrq(i) < 0, frequency is specified as number of hours. Default: 0,-24,-24,-24,-24,-24,-24,-24,-24,-24,-24,-24,-24,-24,-24 If interpolate_output(k) = .true., then the k'th history file will be interpolated to a lat/lon grid before output. Default: .false. Size of latitude dimension of grid for interpolated output. If interpolate_nlat and interpolate_nlon are zero, reasonable values will be chosen by the dycore based on the run resolution. Default: 0 Size of longitude dimension of grid for interpolated output. If interpolate_nlat and interpolate_nlon are zero, reasonable values will be chosen by the dycore based on the run resolution. Default: 0 Selects interpolation method for output on lat/lon grid. 0: Use SE's native high-order method. 1: Use a bilinear method. Default: 1 (bilinear) Selects output grid type for lat/lon interpolated output. 1: Equally spaced, including poles (FV scalars output grid). 2: Gauss grid (CAM Eulerian). 3: Equally spaced, no poles (FV staggered velocity). Default: 1 Full pathname of initial atmospheric state dataset (NetCDF format). Default: set by build-namelist. Perturb the initial conditions for temperature randomly by up to the given amount. Only applied for initial simulations. Default: 0.0 Use a new RNG in dynamics/se/random_xgc.F90 that is more robust and repeatable than the compiler-dependent fortran intrinsic random_number. Default: FALSE Specify a custom seed value for RNG when pertlim /= 0.0. If seed_custom == 0, Then the default seed is used, which is the same from run to run, based only on a unique column index Default: 0 bitwise XOR the system_clock with the existing seed value to ensure it is unique. Default: FALSE If TRUE, try to initialize data for all consituents by reading from the initial conditions dataset. If variable not found then data will be initialized using internally-specified default values. If FALSE then don't try reading constituent data from the IC file; just use the internally-specified defaults. Default: TRUE If true, the COSP cloud simulator is run. Setting this namelist variable happens automatically if you compile with COSP. COSP will not run unless this is set to .true. in the namelist! Turn on the desired simulators using lXXX_sim namelist vars If no specific simulators are specified, all of the simulators are run on all columns and all output is saved. (useful for testing). COSP is available with CAM4 and CAM5 physics. This default logical is set in cospsimulator_intr.F90. Default: FALSE If true, COSP cloud simulators are run to produce all output required for the COSP plots in the AMWG diagnostics package. sets cosp_ncolumns=10 and cosp_nradsteps=3 (appropriate for COSP statistics derived from seasonal averages), and runs MISR, ISCCP, MODIS, CloudSat radar and CALIPSO lidar simulators (cosp_lmisr_sim=.true.,cosp_lisccp_sim=.true., cosp_lmodis_sim=.true.,cosp_lradar_sim=.true.,cosp_llidar_sim=.true.). This default logical is set in cospsimulator_intr.F90. Default: TRUE If true, the COSP cloud simulators are run to produce select output for the AMWG diagnostics package. sets cosp_ncolumns=10 and cosp_nradsteps=3 (appropriate for COSP statistics derived from seasonal averages), and runs MISR, ISCCP, MODIS, and CALIPSO lidar simulators (cosp_lmisr_sim=.true.,cosp_lisccp_sim=.true., cosp_lmodis_sim=.true.,cosp_llidar_sim=.true.). This default logical is set in cospsimulator_intr.F90. Default: FALSE If true, the passive COSP cloud simulators are run to produce select output for the AMWG diagnostics package. sets cosp_ncolumns=10 and cosp_nradsteps=3 (appropriate for COSP statistics derived from seasonal averages), and runs MISR, ISCCP, and MODIS simulators (cosp_lmisr_sim=.true.,cosp_lisccp_sim=.true.,cosp_lmodis_sim=.true.). This default logical is set in cospsimulator_intr.F90. Default: FALSE If true, the active COSP cloud simulators are run to produce select output for the AMWG diagnostics package. sets cosp_ncolumns=10 and cosp_nradsteps=3 (appropriate for COSP statistics derived from seasonal averages), and runs CloudSat radar and CALIPSO lidar simulators (cosp_lradar_sim=.true.,cosp_llidar_sim=.true.). This default logical is set in cospsimulator_intr.F90. Default: FALSE If true, the ISCCP cloud simulator is run to produce select output for the AMWG diagnostics package. sets cosp_ncolumns=10 and cosp_nradsteps=3 (appropriate for COSP statistics derived from seasonal averages), and runs ISCCP simulator (cosp_lmisr_sim=.false.,cosp_lisccp_sim=.true., cosp_lmodis_sim=.false.,cosp_lradar_sim=.false.,cosp_llidar_sim=.false.). This default logical is set in cospsimulator_intr.F90. 1236: Default: FALSE If true, run all simulators using the default values cosp_ncolumns=50 and cosp_nradsteps=1. This option is mainly intended for testing, but it also must be used in order to output the input fields needed to run the simulator in an offline mode (via setting cosp_histfile_aux=.true.). Default: FALSE If true, COSP radar simulator will be run and all non-subcolumn output will be saved. Default: FALSE If true, COSP lidar simulator will be run and all non-subcolumn output will be saved Default: FALSE If true, COSP ISCCP simulator will be run and all non-subcolumn output will be saved. ISCCP simulator is run on only daylight columns. Default: FALSE If true, MISR simulator will be run and all non-subcolumn output will be saved. MISR simulator is run on only daylight columns. Default: FALSE If true, MODIS simulator will be run and all non-subcolumn output will be saved. Default: FALSE If true, the COSP cloud simulator is run for CFMIP 3-hourly experiments. This default logical is set in cospsimulator_intr.F90 Default: FALSE If true, the COSP cloud simulator is run for CFMIP daily experiments. This default logical is set in cospsimulator_intr.F90 Default: FALSE If true, the COSP cloud simulator is run for CFMIP off-line monthly experiments. This default logical is set in cospsimulator_intr.F90 Default: FALSE If true, the COSP cloud simulator is run for CFMIP monthly experiments. This default logical is set in cospsimulator_intr.F90 Default: FALSE Number of subcolumns in SCOPS This default logical is set in cospsimulator_intr.F90 Default: 50 Turns on sampling along a-train orbit for radar and lidar simulators. This default logical is set in cospsimulator_intr.F90 Default: FALSE Path for the Atrain orbit data file provided by CFMIP. There is no default for this, but sample_atrain = .true. will not work if this namelist variable is undefined. currently /project/cms/jenkay/SCAM/repository/cloudsat_orbit_08921_14250.nc Default: no default set now, need to specify in namelist This specifies the CAM history tape where COSP diagnostics will be written. Ignored/not used if any of the cosp_cfmip_* namelist variables are invoked. This default is set in cospsimulator_intr.F90 Default: 1 If true, additional output is added to make it possible to run COSP off-line. This default is set in cospsimulator_intr.F90 Default: FALSE This specifies the CAM history tape where extra COSP diagnostics will be written. This default is set in cospsimulator_intr.F90 Default: 2 This specifies the frequency at which is COSP is called, every cosp_nradsteps radiation timestep. This default is set in cospsimulator_intr.F90 Default: 1 Turns on sub-column output from COSP. If both the isccp/misr simulators and the lidar/radar simulators are run, lfrac_out is from the isccp/misr simulators columns. This default logical is set in cospsimulator_intr.F90 Default: FALSE Number of macrophysics/microphysics substeps. Default: 1 Threshold for autoconversion of cold ice in RK microphysics scheme. Default: set by build-namelist Threshold for autoconversion of warm ice in RK microphysics scheme. Default: set by build-namelist Tunable constant for evaporation of precip in RK microphysics scheme. Default: set by build-namelist Critical radius at which autoconversion become efficient in RK microphysics scheme. Default: set by build-namelist Switch to control whether Park macrophysics should prognose cloud ice (cldice). Default: .true. Switch to control whether Park macrophysics should prognose cloud liquid (cldliq). Default: .true. Switch to control whether Park macrophysics should perform detrainment into the stratiform cloud scheme. Default: .true. Version number for P3 microphysics tables. Default: 1 Directory where P3 initialization files are located. Full pathname of the directory that contains the spa input file Default: None Filename of dataset for spa Default: None Type of time interpolation for data in spa files. Can be set to 'CYCLICAL', 'SERIAL', 'INTERP_MISSING_MONTHS', or 'FIXED'. Default: 'SERIAL' The cycle year of the prescribed aerosol data if spa_type is 'CYCLICAL'. Format: YYYY Default: 0 Specify if aerosol activation is used in microphysics scheme. Default: TRUE Specify if cloud fraction is applied to microphysics tendencies. Default: TRUE Output microphysics tendencies in standard atm output file. Default: FALSE Exponent of power function fit used by P3 qc in autoconversion Default: 2.47_rtype Exponent of power function fit used by P3 qc in accretion Default: 1.15_rtype Exponent of power function fit used by P3 nc in autoconversion Default: -1.79_rtype Coefficient fit used by P3 in accretion Default: 67._rtype Coefficient fit used by P3 in autoconversion Default: 1350._rtype Coefficient for Wegener-Bergeron-Findeisen process in P3 Default: 0.7_rtype Maximal mean rain size in P3 Default: 0.005_rtype Embryonic rain size from autoconversion in P3 Default: 0.000025_rtype Exponent of power function fit used by P3 qc in autoconversion Default: 2.47_rtype Exponent of power function fit used by P3 qc in accretion Default: 1.15_rtype Specify if CCN concentration is read in from ncdf file within p3. Default: FALSE Specify if ice nucleation is done using the Cooper scheme within p3. Default: FALSE Autoconversion mass parameter a. Default: 60.96150355_rtype Autoconversion mass parameter b. Default: 7.097681584_rtype Autoconversion number parameter. Default: 9.968997092_rtype Accretion parameter a. Default: 4.469278867_rtype Accretion parameter b. Default: 1.242355129_rtype Accretion parameter b. Default: 0.88106741_rtype Cloud self-collection number parameter a. Default: 13.99349228_rtype Cloud self-collection number parameter b. Default: 2.014438692_rtype Rain self-collection number parameter a. Default: 13.99349228_rtype Rain self-collection number parameter b. Default: 1.501765635_rtype Specify in-stratus cloud droplet number concentration for stratiform microphysics and radiation. Default: FALSE Specify in-stratus cloud ice number concentration for stratiform microphysics and radiation. Default: FALSE Liquid droplet concentration (in #/cc) when micro_do_nccons=.true. Default: set by build-namelist Ice crystal concentration (in #/cc) when micro_do_nicons=.true. Default: set by build-namelist Minimum droplet number conc (#/m3) imposed when micro_mincdnc > 0. Default: -999. Minimum droplet number conc (#/m3) imposed when p3_mincdnc > 0. Default: -999. Version number for MG microphysics Default: 1 Sub-version number for MG microphysics Default: 0 Switch to control whether MG microphysics should prognose cloud ice (cldice). Default: .true. Switch to control whether MG microphysics should prognose cloud liquid (cldliq). Default: .true. Number of substeps over MG microphysics. Default: 1 Type of precipitation fraction. Default: max_overlap Parameter controlling the rate at which precipitation fraction decreases when the precipitation mass is *decreasing* as it falls (e.g. decreasing rain fraction due to evaporation). This value should be positive. Used only if micro_mg_precip_frac_method is set to mass_gradient. Default: Set by build-namelist. Parameter controlling the rate at which precipitation fraction decreases when the precipitation mass is *increasing* as it falls (e.g. when precipitation falling from above is negligible compared to production concentrated in a small area). This value should be non-negative. Used only if micro_mg_precip_frac_method is set to mass_gradient. Default: Set by build-namelist. Efficiency factor for berg Default: 1 Switch to control whether MG microphysics performs a uniform calculation or not (useful for sub-columns) Default: .false. Fall speed parameter for cloud ice Default: 700.0 Autoconversion size threshold for cloud ice to snow (m) Default: set by build-namelist Switch to turn on temperature dependent DCS. Default: .false. Accretion enhancement factor from namelist Default: 1.0_r8 Tunable coefficient for autoconversion Default: 1350.0_r8 Tunable exponent coefficient for autoconversion Default: 2.47_r8 Tunable exponent coefficient for autoconversion Default: -1.79_r8 scale factor for cloud sedimentation velocity Default: 1.0D0 Temporary variable for a bug fix. Introduced to maintain BFB, must be REMOVED later Default: FALSE Temporary variable for a bug fix. Introduced to maintain BFB, must be REMOVED later Default: FALSE prescribed aerosol bulk sulfur scale factor Default: 2 Updraft velocity paramterization option for ice nucleation. Default: 1 Minimum subgrid vertical velocity Default: 0.2 Switch to turn on heterogeneous freezing code. Default: .false. Add diagnostic output for heterogeneous freezing code. Default: .false. Switch to turn on treatment of pre-existing ice in the ice nucleation code. Default: .false. Add diagnostics for pre-existing ice option in ice nucleation code to history output. Default: .false. Use Niemand et al. ice nucleation scheme for mixed-phase cloud Default: .false. Use DeMott et al. ice nucleation scheme for mixed-phase cloud Default: .false. Subgrid scaling factor for relative humidity in ice nucleation code. Default: set by build-namelist ice nucleation SO2 size threshold for aitken mode Default: set by build-namelist Characteristic adjustment time scale for Hack shallow scheme. Default: set by build-namelist Rain water autoconversion coefficient for Hack shallow scheme. Default: set by build-namelist Penetrative entrainment efficiency in UW shallow scheme. Default: set by build-namelist Switch for Vavrus "freeze dry" adjustment in cloud fraction. Set to FALSE to turn the adjustment off. Default: set by build-namelist Switch for ice cloud fraction calculation. Default: set by build-namelist Minimum rh for low stable clouds. Default: set by build-namelist Adjustment to rhminl for land without snow cover. Default: 0.10 Minimum rh for high stable clouds. Default: set by build-namelist Minimum rh for high stable clouds poleward of 60 degrees. **This is valid only for RK microphysis scheme** Default: set to cldfrc_rhminh Maximum pressure level (mbars) where the cldfrc_rhminp setting is applied. Default: 300. mbar parameter for shallow convection cloud fraction. Default: set by build-namelist parameter for shallow convection cloud fraction. Default: set by build-namelist parameter for deep convection cloud fraction. Default: set by build-namelist parameter for deep convection cloud fraction. Default: set by build-namelist top pressure bound for mid level cloud. Default: set by build-namelist Bottom height (Pa) for mid-level liquid stratus fraction. Default: 700.e2 Scheme for ice cloud fraction: 1=wang & sassen, 2=schiller (iciwc), 3=wood & field, 4=Wilson (based on smith), 5=modified slingo (ssat & empty cloud) 6=Gettelman (based on Heymsfield), 7=all-or-nothing Default: 5 Minimum ice mass mixing ratio used for calculating the ice cloud fraction, Used for cldfrc_iceopt = [4,5,6,7] Default: 1e-5 for iceopt=7, else 1e-12 Critical RH for ice clouds (Wilson & Ballard scheme). Default: 0.93 Minimum rh for ice cloud fraction > 0. Default: set by build-namelist rhi at which ice cloud fraction = 1. Default: set by build-namelist Autoconversion coefficient over land in ZM deep convection scheme. Default: set by build-namelist Autoconversion coefficient over ocean in ZM deep convection scheme. Default: set by build-namelist Tunable evaporation efficiency in ZM deep convection scheme. Default: set by build-namelist Relaxation time in ZM deep convection scheme. Default: set by build-namelist Parcel fractional mass entrainment rate Default: set by build-namelist Maximum downdraft mass flux fraction Default: set by build-namelist DCAPE trigger along with unrestricted launching level for ZM deep convection scheme. Default: FALSE DCAPE only trigger for ZM deep convection scheme. Default: FALSE Use unrestricted launching level (ULL) only trigger for ZM deep convection scheme. This is on top of standard CAPE-based ZM trigger This is in contrast with zmconv_trigdcape_ull which uses both DCAPE and ULL for trigger Default: FALSE A ZM deep convection parameter Default: set by build-namelist Number of negative buoyancy regions that are allowed before the conv. top and CAPE calc are completed Default: set by build-namelist Bottom layer adjustment for setting "launching" level(mx) (to be at maximum moist static energy) Default: set by build-namelist Tpert scale factor in ZM deep convection scheme. Default: 0.D0 Microphysics option in ZM deep convection scheme. Default: set by build-namelist Apply dynamics adjustment to CAPE closure Default: set by build-namelist logical switch for tpert impacts in ZM deep convection scheme Default: set by build-namelist cloud droplet-rain autoconversion enhancement factor in convective microphysics scheme. Default: set by build-namelist cloud droplet-rain accretion enhancement factor in convective microphysics scheme. Default: set by build-namelist Autoconversion size threshold for cloud ice to snow (m) Default: set by build-namelist Multiscale Coherent System Parameterization (MCSP), heating coefficient Default: set by build-namelist Multiscale Coherent System Parameterization (MCSP), moisture coefficient Default: set by build-namelist Multiscale Coherent System Parameterization (MCSP), zonal wind coefficient Default: set by build-namelist Multiscale Coherent System Parameterization (MCSP), meridional wind coefficient Default: set by build-namelist Factor applied to the ice fall velocity computed from Stokes terminal velocity. Default: set by build-namelist Type of water vapor saturation vapor pressure scheme employed. 'GoffGratch' for Goff and Gratch (1946); 'MurphyKoop' for Murphy & Koop (2005) Default: GoffGratch Turn on aerosol related processes (emissions, chemistry, deposition, etc.) Default: TRUE Calculate turbulent transport. Default: TRUE Calculate Rayleigh friction. Default: TRUE Calculate gravity wave drag. Default: TRUE Turn on energy budget checks in tphysac. Default: TRUE Turn on energy fixer in tphysbc. Default: TRUE Calculate dry adjustment. Default: TRUE Calculate stratiform cloud macrophysics. When the CAM4 Rasch-Kristjansson scheme is in use, l_st_mac = .true. also swiches on the microphysics. Default: TRUE Calculate stratiform cloud microphysics. Note that this switch is implemented only for the Morrison-Gettelman scheme. For Rasch-Kristjansson, the mac-only option has not been implemented (i.e., depending on what is chosen for l_st_mac, macro and microphysics are either both on or both off.) Default: TRUE Do radiative transfer and heating/cooling calculation. Default: TRUE Numerical scheme for coupling surface tracer fluxes with the rest of model. Default: 1 Control use of sub-columns within macro/micro physics; 'false' for no subcolumns. Default: 'false' Type of sub-column generator scheme employed. 'SIHLS' Sub-columns generated with Latin Hypercube sampling of the CLUBB PDF; Type of sub-column generator scheme employed. 'CloudObj' Create sub-columns where most water is assigned to cloud sub-columns; Type of sub-column generator scheme employed. 'tstcp' testing; Type of sub-column generator scheme employed. 'vamp' Variation Across Microphysics Profiles simple deterministic scheme; 'off' for none. Default: 'off' Turns off averaging and assigns first subcolumn back to grid. Needed for BFB comparisons 'true' for no averaging. Default: '.false.' Turns on/off filtering during averaing in tstcp 'true' to use filtering. Default: '.false.' Turns on/off use of weights during averaging in tstcp 'true' to use weights. Default: '.false.' Perturbs the temperatures in state after copying for testing purposes 'true' to perturb temperatures. Default: '.false.' Turns on/off use of weights during averaging in tstcp 'true' to use weights. Default: '.true.' Number of subcolumns/samples to use in this simulation. Must be less than psubcols. Default: 4 Type of condensate to assume in VAMP Generator 1 Uniform Condensate 2 Variable Condensate Uniform Number 3 Variable Condensate Variable Number Default: 3 Type of overlap to assume in VAMP Generator 1 Maximum Default: 1 Number of subcolumns in VAMP Generator Default: 10 Type of deep convection scheme employed. 'ZM' for Zhang-McFarlane; 'off' for none. Default: 'ZM' Type of microphysics scheme employed. 'RK' for Rasch and Kristjansson (1998); 'MG' for Morrison and Gettelman (2008), Gettelman et al (2010) two moment scheme for CAM5.1, P3 for the P3 microphysics scheme, Morrison and Milbrandt (2015),Milbrandt and Morrison (2016) Default: set by build-namelist (depends on value set in configure). Type of macrophysics scheme employed. 'park' for Park (1998); 'RK' for Rasch and Kristjansson (1998); 'CLUBB_SGS' clubb. Default: set by build-namelist Switch for CLUBB_SGS Default: FALSE Switch for SHOC_SGS Default: FALSE Switch for AeroCom diagnostics Default: FALSE Type of shallow convection scheme employed. 'Hack' for Hack shallow convection; 'UW' for original McCaa UW pbl scheme, modified by Sungsu Park; 'CLUBB_SGS' for CLUBB_SGS Default: set by build-namelist (depends on eddy_scheme). Logical switch to turn on turbulent mountain stress calculation in vertical diffusion routine. Default: set by build-namelist Apply ice supersaturation adjustment code Default: .false. Maximum master length scale designed to address issues in diag_TKE outside the boundary layer. In order not to disturb turbulence characteristics in the lower troposphere, this should be set at least larger than a few km. However, this does not significantly improve the values outside of the boundary layer. Smaller values make some improvement, but it is also noisy. Better results are seen using eddy_leng_max or kv_freetrop_scale. Default: 40.e3 (m) Maximum dissipation length scale designed to address issues with diag_TKE outside the boundary layer, where the default value generates large diffusivities. A value of 30 m is consistent with the length scales used in the HB scheme; however, this will also reduce value in the boundary layer. Default: 40.e3 (m) Bottom pressure level at which namelist values for eddy_leng_max and eddy_lbulk_max are applied. Default values are used at lower levels (i.e. the boundary layer). Default: 100.e3 (hPa) Moist entrainment enhancement parameter. Default: set by build-namelist Pressure (Pa) that defined the upper atmosphere for adjustment of eddy diffusivities from diag_TKE using kv_top_scale. Default: 0. Scaling factor that is applied (multiplied) to the eddy diffusivities in the upper atmosphere (see kv_top_pressure). Default: 1.0 Scaling factor that is applied (multiplied) to the eddy diffusivities in the free troposphere (boundary layer to kv_top_pressure) Default: 1.0 Perform mass conservation check on eddy diffusion operation. Default: FALSE Logical switch to turn on implicit turbulent surface stress calculation in diffusion solver routine. Default: set by build-namelist This is part of PNNL bug fixes under Polar project.It fixes the aerosol regeration bug in ndrop.F90 Default: .false. This is part of PNNL bug fixes under Polar project.It fixes the liq cloud fraction bug in macro and micro physics Default: .false. SHOC timestep. Setting to < 0 will set SHOC timestep equal to the macrophysics and microphysics timestep (i.e. dtime/cld_macmic_num_steps). Default: -1 Temperature variance tuning factor. Default: set by build-namelist Moisture variance tuning factor. Default: set by build-namelist Temperature moisture covariance tuning factor. Default: set by build-namelist Vertical velocity variance tuning factor. Default: set by build-namelist Length scale tuning factor. Default: set by build-namelist Third moment vertical velocity tuning factor. Default: set by build-namelist Lowest allowable value for stability correction for isotropic timescale. Default: set by build-namelist Higest allowable value for stability correction for isotropic timescale. Should be set to value equal to or greater than lambda_low. Default: set by build-namelist Controls the slope of increase of stability correction term from low to high values. Default: set by build-namelist Minimum threshold of integrated stability to increase the stability correction term. Default: set by build-namelist Coefficient for eddy diffusivity of heat. Default: set by build-namelist Coefficient for eddy diffusivity of momentum. Default: set by build-namelist Minimum allowable value for coefficient for eddy diffusivity for heat for stable boundary layers. Default: set by build-namelist Maximum allowable value for coefficient for eddy diffusivity for heat for stable boundary layers. Default: set by build-namelist Minimum allowable value for coefficient for eddy diffusivity for momentum for stable boundary layers. Default: set by build-namelist Maximum allowable value for coefficient for eddy diffusivity for momentum for stable boundary layers. Default: set by build-namelist Switch to turn on implementation of SHOC's mean updraft velocity in cloud. Default: .false. Switch to turn on implementation of CLUBB's mean updraft velocity in cloud. Default: .false. Apply cloud top radiative cooling parameterization Default: .false. Include effects of precip evaporation on turbulent moments Default: .false. Explicit diffusion on temperature and moisture when CLUBB is on Default: .false. CLUBB do explicit diffusion with a stability correction Default: .false. Enables subgrid features gustiness, tpert, and thv fix Default: .false. Switch to turn on the clasp emulator for heterogeneous surface coupling Default: False Switch to turn on the clasp emulator for heterogeneous surface coupling Default: False CLUBB timestep. Default: set by build-namelist Rain evaporation efficiency factor. Default: set by build-namelist Switch for CLUBB_ADV Default: FALSE Switch for CLUBBND_CAM Default: FALSE clubb liquid deep convection factor Default: 8.e-6 clubb liquid shallow convection factor Default: 10.e-6 clubb ice deep convection factor Default: 25.e-6 clubb ice shallow convection factor Default: 50.e-6 temperature thresholds determining the fraction of condensate detrained from ZM as ice Default: 268.15D0 temperature thresholds determining the fraction of condensate detrained from ZM as ice Default: 238.15D0 Temporary variable for a bug fix. Introduced to maintain BFB, must be REMOVED later Default: FALSE CLUBB flag to determine 1) if the trapezoidal rule is called for the thermodynamic-level variables output from pdf_closure; 2) if the trapezoidal rule is called for three momentum-level variables output from pdf_closure; and 3) if call subroutine pdf_closure twice. True means all three options are True, while FALSE means all three options are false. Default: TRUE Select the placement of the call to CLUBB's PDF: 1) ipdf_pre_advance_fields --> Call before advancing predictive fields ; 2) ipdf_post_advance_fields --> Call after advancing predictive fields ; 3) ipdf_pre_post_advance_fields --> Call both before and after advancing predictive fields Default: 1 Constant associated with the dissipation of the variance of vertical velocity Default: 1.0. See clubb/parameters_tunable.F90 Constant associated with the dissipation of the variance of total water Default: 1.0 Low skewness of Newtonian damping of water flux Default: 4.0 High skewness of Newtonian damping of water flux Default: 6.0 Low skewness of buoyancy damping of water flux Default: 0.5 High skewness of buoyancy damping of water flux Default: 0.5 Constant associated with Newtonian damping of the third moment of vertical velocity Default: 4.2 Low skewnes of buoyancy damping of the third moment of vertical velocity Default: 0.7 High skewnes of buoyancy damping of the third moment of vertical velocity Default: 0.35 Constant of Newtonian damping of the variances of u-wind and v-wind Default: 1.0 Constant related to skewness of liquid water potential temperature and total water Default: 2.4 Constant of the width of PDF in w-coordinate Low Skw. gamma coef. Skw. Fnct Default: 0.32 Fractional parcel entrainment rate per unit height (1/m) Default: 0.001 Background coefficient of eddy diffusion Default: 20.0 Constant associated with the dissipation of the variance of vertical velocity Default: 1.0. See clubb/parameters_tunable.F90 Constant associated with the dissipation of the variance of vertical velocity Default: 1.0. See clubb/parameters_tunable.F90 Constant associated with the dissipation of the variance of vertical velocity Default: 1.0. See clubb/parameters_tunable.F90 Constant associated with the dissipation of the variance of total water Default: 1.0 C2 coef. for the thlp2_dp1 term Default: 1.0 or clubb_C2rt if it is specified C2 coef. for the rtpthlp_dp1 term Default: 1.3 or 1.3*clubb_C2rt if it is specified Low skewness of Newtonian damping of water flux Default: 4.0 High skewness of Newtonian damping of water flux Default: 6.0 High skewness of Newtonian damping of water flux Default: 1.0 Low skewness of Newtonian damping of water flux Default: 1.0 Low skewness of Newtonian damping of water flux Default: 6.0 Low skewness of buoyancy damping of water flux Default: 0.5 High skewness of buoyancy damping of water flux Default: 0.5 Constant associated with Newtonian damping of the third moment of vertical velocity Default: 4.2 Low skewnes of buoyancy damping of the third moment of vertical velocity Default: 0.7 High skewnes of buoyancy damping of the third moment of vertical velocity Default: 0.35 High skewnes of buoyancy damping of the third moment of vertical velocity Default: 0.5 Constant of Newtonian damping of the variances of u-wind and v-wind Default: 1.0 Constant related to skewness of liquid water potential temperature and total water Default: 2.4 Constant of the width of PDF in w-coordinate Default: 0.32 High Skw. gamma coef. Skw. Fnct. Default: 0.32 or clubb_gamma_coef if it is specified High Skw. gamma coef. Skw. Fnct. Default: 5.0or clubb_gamma_coef if it is specified Fractional parcel entrainment rate per unit height (1/m) Default: 0.001 Background coefficient of eddy diffusion Default: 20.0 Coefficient of Kh_zm Default: 0.60 Coefficient of Kh_zm for eddy mixing of scalars Default: 1.00 Lscale threshold: damp C6 & C7 [m] Default: 60.0D0 Lscale threshold: prevent large damping at low altitudes where Lscale is small Default: 100.0D0 ======= Full pathname of time-variant ozone mixing ratio boundary dataset. Default: set by build-namelist. Add CAM3 prescribed ozone to the physics buffer. Default: FALSE Flag for yearly cycling of ozone data. If set to FALSE, a multi-year dataset is assumed, otherwise a single-year dataset is assumed, and ozone will be cycled over the 12 monthly averages in the file. Default: TRUE String identifying a hardware counter to the papi library. Default: PAPI_TOT_CYC String identifying a hardware counter to the papi library. Default: PAPI_FP_OPS String identifying a hardware counter to the papi library. Default: PAPI_FP_INS String identifying a hardware counter to the papi library. Default: PAPI_NO_CTR If TRUE, print CPU timing per model timestep. Default: FALSE Flag indicating whether the mpi_barrier in t_barrierf should be called. Default: FALSE Maximum number of levels of timer nesting . Default: 99999 Maximum detail level to profile. Default: 1 Flag indicating whether timers are disabled. Default: FALSE Collect and print out global performance statistics (for this component communicator). Default: FALSE Maximum number of processes writing out timing data (for this component communicator). Default: -1 Separation between process ids for processes that are writing out timing data (for this component communicator). Default: 1 Flag indicating whether the PAPI namelist should be read and HW performance counters used in profiling. Default: FALSE Flag indicating whether the performance timer output should be written to a single file (per component communicator) or to a separate file for each process. Default: TRUE Initialization of GPTL timing library. Default: GPTLmpiwtime Swap communication protocol option (reduced set): 3, 5: nonblocking send 2, 3, 4, 5: nonblocking receive 4, 5: ready send Default: 4 Swap communication maximum request count: <=0: do not limit number of outstanding send/receive requests >0: do not allow more than swap_comm_maxreq outstanding nonblocking send requests or nonblocking receive requests Default: 128 fc_gather flow control option: < 0 : use MPI_Gather >= 0: use point-to-point with handshaking messages and preposting receive requests up to max(min(1,fc_gather_flow_cntl),max_gather_block_size) ahead. Default value is defined by private parameter max_gather_block_size, which is currently set to 64. Default: 64 Allocate all buffers as global. This is a performance optimization on machines for which allocation/deallocation of physpkg scope buffers on every timestep was slow (Cray-X1). Default: TRUE Name of the CAM physics package. N.B. this variable may not be set by the user. It is set by build-namelist via information in the configure cache file to be consistent with how CAM was built. Default: set by build-namelist Type of idealized physics configuration to use if running cam_physpkg="ideal". Default: held-suarez Name of the CAM chemistry package. N.B. this variable may not be set by the user. It is set by build-namelist via information in the configure cache file to be consistent with how CAM was built. Default: set by build-namelist Runtime options of upper thermosphere WACCM-X. 'ionosphere' for full ionopshere and neutral thermosphere, 'neutral' for just neutral thermosphere, and off for no WACCM-X. Default: 'off' Troposphere cloud physics will be done only below the top defined by this pressure (Pa). Default: set by build-namelist MAM affects climate only below the top defined by this pressure (Pa). Default: 0 for non-MAM cases, otherwise set by build-namelist Molecular diffusion will be done only if the lowest pressure is below this limit (Pa). Default: 0.1 The level closest to this pressure (Pa) is the bottom of the region where molecular diffusion is done. Default: 50. Use this variable to specify the latitude (in degrees) of a column to debug. The closest column in the physics grid will be used. Default: none Use this variable to specify the longitude (in degrees) of a column to debug. The closest column in the physics grid will be used. Default: none If set to .true., turns on extra validation of physics_state objects in physics_update. Used mainly to track down which package is the source of invalid data in state. Default: .false. Switch to turn on adjustment of the surface fluxes to reduce instabilities in the surface layer. Set to 1 to turn on the adjustments. Default: 0 Type of eddy scheme employed by the vertical diffusion package. 'HB' for Holtslag and Boville; 'diag_TKE' for diagnostic tke version of Grenier and Bretherton; 'HBR' for Rasch modified version of 'HB'. Default: 'HB' If .true., a linearization of the response of the pbl scheme to surface stresses is sent to the coupler every time step, using the fields 'wsresp' and 'tau_est'. If .true., a gustiness value will be exported to the coupler, which allows surface components to distinguish between the effect of mean wind and gustiness when calculating fluxes (and in particular surface drag). If .false., no extra value is exported, and gustiness is instead applied by the atmosphere by scaling up the exported wind fields (ubot and vbot). This is simpler and requires slightly less coupling overhead, but produces numerical artifacts (oscillations) in surface stresses, particularly when the gustiness is large compared with the mean wind. Switch to use new unified convective transport for aerosols Default: .false. Switch to choose activation method for unified convective transport of aerosols Default: 2 Switch to use new unified convective transport scheme for gas Default: .false. resuspension bug fix in wetdep.F90 Default: .false. ice nucleation scheme by Demott Default: .false. switch to turn on pergro code changes Default: .false. switch to turn on code instrumentations for running pergro test Default: .false. invokes new microphysics code (single call to amicphys routine) if > 0 Default: 0 number of so4(+nh4) monolayers needed to "age" a carbon particle Default: Set by namelist Produce output for the AMWG diagnostic package. Default: .true. Produce verbose history output by default Default: .false. Produce output for the AMWG variability diagnostics. Default: .false. Switch for diagnostic output of the aerosol tendencies Default: .false. Switch for diagnostic output of the aerosol optics Default: .false. Switch for diagnostic output of eddy variables Default: .false. Switch for cam4 T/Q budget diagnostic output Default: .false. History tape number T/Q budget output is written to. Default: 1 Switch for gas chemistry tracers budget diagnostic output Default: .false. Switch for gas chemistry tracers 2D budget diagnostic output Default: .false. Switch for gas chemistry tracers 2D budget diagnostic output within certain levels Default: .false. Start layer of L1 for gas chemistry tracers 2D budget diagnostic output Default: 1 End layer of L1 for gas chemistry tracers 2D budget diagnostic output Default: 26 Start layer of L2 for gas chemistry tracers 2D budget diagnostic output Default: 27 End layer of L2 for gas chemistry tracers 2D budget diagnostic output Default: 38 Start layer of L3 for gas chemistry tracers 2D budget diagnostic output Default: 39 End layer of L3 for gas chemistry tracers 2D budget diagnostic output Default: 58 Start layer of L4 for gas chemistry tracers 2D budget diagnostic output Default: 59 End layer of L4 for gas chemistry tracers 2D budget diagnostic output Default: 72 Switch for gas chemistry tracers 2D budget diagnostic output Default: .false. Switch for gas chemistry tracers 2D budget diagnostic output within certain levels Default: .false. Switch for diagnostic output used primarily for WACCM runs. Default: .true. if WACCM physics is on, .false. otherwise. Switch to fix a bug in ndrop.F90 for "repeated g1 eqn". Default: .false. Switch for diagnostics specific to CLUBB. Default: .true. Output needed to generate input to drive a prescribed aerosol climate run. Requires that history_aerosol be set to true. Note that additional post processing is required with output in order to generate a prescribed aerosol climate run. Default: .false. Type of radiation scheme employed. Default: set by build-namelist Constant solar zenith angle value in degrees for idealized configurations such as radiative-convective equilibrium experiments. This is disabled when the value is less than 0 Default: -1 Specify if optics are read in from spa ncdf file. Default: FALSE Convective water used in radiation? 0 ==> No 1 ==> Yes - Arithmetic average. 2 ==> Yes - Average in emissivity. Default: set by build-namelist Interval of long-wave radiation calculation in timesteps (if positive) or model hours (if negative). Default: -1 Interval of short-wave radiation calculation in timesteps (if positive) or model hours (if negative). Default: -1 Specifies length of time in timesteps (positive) or hours (negative) SW/LW radiation will be run for every timestep from the start of an initial run. Default: 0 Indicates whether to consider aerosols in radiative calculations Default: TRUE Fixed value of solar constant for idealized configurations such as radiative-convective equilibrium experiments. This is disabled when the value is less than 0 Default: -1 Return fluxes per band in addition to the total fluxes. Default: FALSE If true, then use the radiation timestep for all cosz calculations. NOTE: This logical flag is *temporary*. It should be REMOVED after we decide to make this functionality default Default: FALSE Approximate value of decay time at model top (days); #if 0., no rayleigh friction is applied Default: 0.0D0 Definitions for the aerosol modes that may be used in the rad_climate and rad_diag_* variables. Default: set by build-namelist A list of the radiatively active species, i.e., species that affect the climate simulation via the radiative heating rate calculation. Default: set by build-namelist A list of species to be used in the first diagnostic radiative heating rate calculation. These species are not the ones affecting the climate simulation. This is a hook for performing radiative forcing calculations. Default: none Analogous to rad_diag_1, but for the 2nd diagnostic calculation. Default: none Analogous to rad_diag_1, but for the 3rd diagnostic calculation. Default: none Analogous to rad_diag_1, but for the 4th diagnostic calculation. Default: none Analogous to rad_diag_1, but for the 5th diagnostic calculation. Default: none Analogous to rad_diag_1, but for the 6th diagnostic calculation. Default: none Analogous to rad_diag_1, but for the 7th diagnostic calculation. Default: none Analogous to rad_diag_1, but for the 8th diagnostic calculation. Default: none Analogous to rad_diag_1, but for the 9th diagnostic calculation. Default: none Analogous to rad_diag_1, but for the 10th diagnostic calculation. Default: none output data needed for off-line radiation calculations Default: FALSE History tape number radiation driver output data is written to. Default: 0 Averaging flag for adiation driver output data. Default: 'A' Full pathname of dataset for water refractive indices used in modal aerosol optics Default: none Dry deposition surface values interpolated to model grid, required for unstructured atmospheric grids with modal chemistry. Default: none filepath and name for ice optics data for rrtmg Default: none filepath and name for ice optics data for rrtmg Default: none filepath and name for ice optics data for rrtmg Default: none filepath and name for ice optics data for rrtmg Default: none filepath and name for liquid cloud (gamma distributed) optics data for rrtmg Default: none File path for RRTMGP longwave gaseous absorption coefficients file. File path for RRTMGP shortwave gaseous absorption coefficients file. Enables low temperature warnings in RRTMGP. Disabling this is useful to avoid filling up logs for aqua planet cases. Default: TRUE Variable to specify the vertical index at which the Rayleigh friction term is centered (the peak value). Default: 2 Rayleigh friction parameter to determine the width of the profile. If set to 0 then a width is chosen by the algorithm (see rayleigh_friction.F90). Default: 0. Rayleigh friction parameter to determine the approximate value of the decay time (days) at model top. If 0.0 then no Rayleigh friction is applied. Default: 0. Full pathname of master restart file from which to branch. Setting is Required for branch run. Default: none Full pathname of IOP dataset. Default: set by build-namelist. Use the specified surface properties. Default: FALSE Time scale to nudge to IOP forcing file. Default: 10800 (s) Set to TRUE to turn on doubly periodic cloud resolving model mode. Default: FALSE Compute LS vertical transport using omega prescribed from IOP file. Default: FALSE Use relaxation for temperature and moisture. Default: FALSE Use relaxation for u and v winds. Default: FALSE Lowest layer to apply relaxation for t and q. Keep to default value to apply relaxation at the surface. Default: 1050.0 (hPa) Highest layer to apply relaxation for t and q. Keep to default value to apply relaxation at the model top. Default: 0.e3 (hPa) Time scale to nudge to IOP forcing file. Default: 10800 (s) Highest layer to apply perturbations for doubly periodic CRM mode. Default: 0.e3 (hPa) Initialize with observed aerosols from IOP file. Default: FALSE Turn off microphysics computation. Default: FALSE | | Ignore all tracers from initial conditions file, and default all tracers not specified in IOP to minimum value (usually zero). Default: FALSE Total solar irradiance (W/m2). Default: set by build-namelist Full pathname of dataset for file that contains the solar photon enerspectra or TSI data as a time series Default: none Type of time interpolation for data in solar_data_file. Can be set to "FIXED" or "SERIAL". Default: SERIAL If solar_data_type is "FIXED" then solar_data_ymd is the date the solar data is fixed to. If solar_data_type is "SERIAL" the solar_data_ymd is the start date of the time series of solar data. Format: YYYYMMDD Default: none Seconds of the day corresponding to solar_data_ymd Default: current model time of day Use spectral scaling in the radiation heating Default: false Turn on multiscale modelling framework Default: false Turn on MMF variance transport Default: false Turn on MMF explicit scalar momentum transport (ESMT) Default: false Turn on explicit cloud parameterized pollutants Default: false Type of E3SM-MMF microphysics scheme employed. Default: sam1mom Angle of CRM domain in degrees used to apply large scale wind forcing. Default value depends on whether CRM domain is 2D or 3D. For 2D runs a value of 90deg used for a south-north orientation to reduce precipitation biases that tend to occur when the CRM aligns with the prevailing wind. A value of -1 enables an experimental randomly rotating CRM orientation. Defaults: 2D CRM: 90 (i.e. north-south) 3D CRM: 0 Wavenumber cutoff for filtered MMF variance transport. A value of 0 disables filtering so that the total variance is transported Default: 0 Enables CRM mean-state acceleration when using E3SM-MMF. Default: true CRM acceleration factor to apply if use_crm_accel is true Default: 2.0 Turn on CRM mean-state acceleration for u,v when use_crm_accel is true. If crm_accel_uv is false and use_crm_accel is true, then mean-state acceleration will only be applied to scalar fields (liquid/ice static energy and non-precipitating total water mixing ratio). This has no effect when use_crm_accel is false. Default: true This variable should not be set by the user. If configure has been invoked with the '-nadv_tt N' option then build-namelist will set this flag to true which turns on the test tracer code. Also, if the user invokes configure with the option '-nadv N', and N is larger than the number of advected constituents requested by all other physics and chemistry parameterizations, then the number of test tracers is chosen dynamically to fill the available slots in the constituents array up to the total number requested by the -nadv option. Default: set by configure If true age of air tracers are included. This variable should not be set by the user. It will be set by build-namelist to be consistent with the '-age_of_air_trcs' argument specified to configure. Default: set by configure If true age of air tracers are read from the initial conditions file. If this is not specified then they are not read from IC file. Default: TRUE The length (in seconds) of the coupling interval between the dynamics and physics. Changing this variable directly impacts the physical parameterizations in the model and may impact the climate. Changing resolution usually requires a change in dtime. Default: is resolution and dycore dependent and is set by build-namelist. Full pathname of time-invariant boundary dataset for topography fields. Default: set by build-namelist. Full pathname of boundary dataset for tropopause climatology. Default: set by build-namelist. Flag to output optional tropopause variables. Default: FALSE E90 tropopause vmr threshold. Default: 100.e-9 Flag to tell build-namelist to use time-dependent external forcing files for the aircraft emissions. Default: FALSE Flag to set rad_climate variable so that the chemical tracers are radiatively passive. Default: FALSE Wet depostion method used MOZ --> mozart scheme is used NEU --> J Neu's scheme is used Default: MOZ List of gas-phase species that undergo wet deposition via the wet deposition scheme. Default: NONE List of aerosol species that undergo wet deposition. Default: set by build-namelist. List of aerosol species that undergo sediment (dry deposition). Default: set by build-namelist. Tuning for below cloud scavenging of interstitial modal aerosols. Default: set by build-namelist. Tuning for in-cloud scavenging of interstitial modal aerosols. Default: set by build-namelist. In-cloud scav for cloud-borne aerosol tuning factor Default: set by build-namelist. Flag for wet scavenging tuning Default: .false. Seasalt aerosol emission tuning factor Default: set by build-namelist. Full pathname of boundary dataset for airplane emissions. Default: set by build-namelist. Full pathname of dataset containing soil moisture fraction information used in 'xactive_atm' method of calculating dry deposition of chemical tracers. Default: set by build-namelist. Full pathname of dataset which contains the prescribed deposition velocities used in the 'table' method of calculating dry deposition of chemical tracers. Default: set by build-namelist. Full pathname of dataset which contains land vegitation information used in 'xactive_atm' method of calculating dry deposition of chemical tracers. Default: set by build-namelist. Full pathname of dataset which contains season information used in 'xactive_atm' method of calculating dry deposition of chemical tracers. Default: set by build-namelist. Tuning parameter for dust emissions. Default: set by build-namelist. Tuning flag for seasalt introduced to accompany unified convective transport scheme by PNNL Default: .false. Full pathname of dataset for coefficient data used in WACCM to calculate ion drag for high solar fluxes from the Scherliess low latitude electric potential model. Default: set by build-namelist. Full pathname of dataset for coefficient data used in WACCM to calculate ion drag for low solar fluxes from the Scherliess low latitude electric potential model. Default: set by build-namelist. Full pathname of dataset for coefficient data used in WACCM to calculate ion drag from the Weimer96 high latitude electric potential model. Default: set by build-namelist. Full pathname of dataset for the neutral species absorption cross sections for EUV photo reactions producing electrons. Default: set by build-namelist. Type of time interpolation of emission datasets specified. Can be set to 'CYCLICAL', 'SERIAL', 'INTERP_MISSING_MONTHS', or 'FIXED'. by srf_emis_specifier. Default: 'CYCLICAL' The cycle year of the surface emissions data if srf_emis_type is 'CYCLICAL'. Format: YYYY Default: 0 The date at which the surface emissions are fixed if srf_emis_type is 'FIXED'. Format: YYYYMMDD Default: 0 The time of day (seconds) corresponding to srf_emis_fixed_ymd at which the surface emissions are fixed if srf_emis_type is 'FIXED'. Default: 0 seconds Full pathname of dataset for EUVAC solar EUV model (0.05-121nm). Default: set by build-namelist. Full pathname of dataset for variables used to compute the solar flux in the EUV wavelength regime. Used to compute EUV photorates and heating from EUV photolysis. Default: set by build-namelist. The cycle year of the external forcings (3D emissions) data if ext_frc_type is 'CYCLICAL'. Format: YYYY Default: 0 Default: current model date The date at which the external forcings are fixed if ext_frc_type is 'FIXED'. Format: YYYYMMDD Default: 0 The time of day (seconds) corresponding to ext_frc_fixed_ymd at which the external forcings are fixed if ext_frc_type is 'FIXED'. Default: 0 seconds List of full pathnames of elevated emission (or external chemical forcings) datasets. The chemistry package reads in elevated emission data from a set of netcdf files in units of "molecules/cm3/s". Each tracer species emissions is read from its own file as directed by the namelist variable ext_frc_specifier. The ext_frc_specifier variable tells the model which species have elevated emissions and the file path for the corresponding species. That is, the ext_frc_specifier variable is set something like: ext_frc_specifier = 'SO2 -> /path/vrt.emis.so2.nc', 'SO4 -> /path/vrt.emis.so4.nc', etc... Each emission file can have more than one source. When the emission are read in the sources are summed to give a total emission field for the corresponding species. The emission can be read in as time series of data, cycle over a given year, or be fixed to a given date. The vertical coordinate in these emissions files should be 'altitude' (km) so that the vertical redistribution to the model layers is done using a mass conserving method. If the vertical coordinate is altitude then data needs to be ordered from the surface to the top (increasing altitude). Default: set by build-namelist. Type of time interpolation for fixed lower boundary data. Can be set to 'CYCLICAL', 'SERIAL', 'INTERP_MISSING_MONTHS', or 'FIXED'. Default: 'CYCLICAL' The cycle year of the fixed lower boundary data if flbc_type is 'CYCLICAL'. Format: YYYY Default: 0 The date at which the fixed lower boundary data is fixed if flbc_type is 'FIXED'.. Format: YYYYMMDD Default: 0 The time of day (seconds) corresponding to flbc_fixed_ymd at which the fixed lower boundary data is fixed if flbc_type is 'FIXED'. Default: 0 seconds Full pathname of dataset for fixed lower boundary conditions. Default: set by build-namelist. List of species that are fixed at the lower boundary. Default: set by build-namelist. Type of time interpolation for fixed lower boundary data. Default: 'CYCLICAL' Full pathname of dataset for chemical tracers constrained in the stratosphere Default: set by build-namelist. List of species that are constrained in the stratosphere. Default: set by build-namelist. List of species from ChemUCI that e-fold decay in 30 days in the stratosphere. Default: set by build-namelist. Full pathname of dataset for land mask applied to the lighting NOx production Default: set by build-namelist. Multiplication factor applied to the lighting NOx production Default: 1.0. Multiplication factor applied to the upper boundary NO mass mixing ratio. Default: 1.0 Full pathname of dataset for the neutral species absorption cross sections. Default: set by build-namelist. Full pathname of dataset for fast-tuv photolysis cross sections Default: set by build-namelist. Full pathname of dataset of O2 cross sections for fast-tuv photolysis Default: set by build-namelist. Full pathname of dataset of O2 and 03 column densities above the model for look-up-table photolysis Default: set by build-namelist. Full pathname of the aircraft input file list Default: none Full pathname of the directory that contains the files specified in {{ hilight }}aircraft_specifier{{ closehilight }}. Default: none Type of time interpolation for data in aircraft aerosol files. Default: 'CYCLICAL_LIST' Full pathname of the directory that contains the files specified in prescribed_aero_filelist. Default: set by build-namelist. Switch used to indicate which type of aerosols are prescribed -- bulk or modal. This is used to set the default prescribed_aero_specifier and aerodep_flx_specifier namelist variables. Default: set by build-namelist Filename of dataset for prescribed aerosols. Default: set by build-namelist. Filename of file that contains a sequence of filenames for prescribed aerosols. The filenames in this file are relative to the directory specied by prescribed_aero_datapath. Default: set by build-namelist. Remove the file containing prescribed aerosol concentrations from local disk when no longer needed. Default: FALSE A list of variable names of the concentration fields in the prescribed aerosol datasets and corresponding names used in the physics buffer seperated by colons. For example: prescribed_aero_specifier = 'pbuf_name1:ncdf_fld_name1','pbuf_name2:ncdf_fld_name2', ... If there is no colon seperater then the specified name is used as both the pbuf_name and ncdf_fld_name, Default: none Type of time interpolation for data in prescribed_aero files. Can be set to 'CYCLICAL', 'SERIAL', 'INTERP_MISSING_MONTHS', or 'FIXED'. Default: 'SERIAL' The cycle year of the prescribed aerosol data if prescribed_aero_type is 'CYCLICAL'. Format: YYYY Default: 0 The date at which the prescribed aerosol data is fixed if prescribed_aero_type is 'FIXED'. Format: YYYYMMDD Default: 0 The time of day (seconds) corresponding to prescribed_aero_fixed_ymd at which the prescribed aerosol data is fixed if prescribed_aero_type is 'FIXED'. Default: 0 seconds Full pathname of the directory that contains the files specified in aerodep_flx_filelist. Default: set by build-namelist. Filename of dataset for prescribed aerosols. Default: set by build-namelist. Filename of file that contains a sequence of filenames for prescribed aerosols. The filenames in this file are relative to the directory specied by aerodep_flx_datapath. Default: set by build-namelist. Remove the file containing prescribed aerosol deposition fluxes from local disk when no longer needed. Default: FALSE Names of variables containing aerosol data in the prescribed aerosol datasets. Default: none Type of time interpolation for data in aerodep_flx files. Can be set to 'CYCLICAL', 'SERIAL', 'INTERP_MISSING_MONTHS', or 'FIXED'. Default: 'SERIAL' The cycle year of the prescribed aerosol flux data if aerodep_flx_type is 'CYCLICAL'. Format: YYYY Default: 0 The date at which the prescribed aerosol flux data is fixed if aerodep_flx_type is 'FIXED'. Format: YYYYMMDD Default: 0 The time of day (seconds) corresponding to ssaerodep_flx_fixed_ymd at which the prescribed aerosol flux data is fixed if saerodep_flx_type is 'FIXED'. Default: 0 seconds Full pathname of the directory that contains the files specified in mam_mom_filelist. Default: 'atm/cam/chem/trop_mam/marine_BGC/' Filename of dataset for prescribed marine organic matter ocean concentrations. Default: 'monthly_macromolecules_0.1deg_bilinear_latlon_year01_merge_date.nc' Filename of file that contains a sequence of filenames for prescribed marine organic matter ocean concentrations. The filenames in this file are relative to the directory specified by mam_mom_datapath. Default: none Remove the file containing prescribed aerosol deposition fluxes from local disk when no longer needed. Default: FALSE Names of variables containing aerosol data in the prescribed aerosol datasets. Default: 'chla:CHL1','mpoly:TRUEPOLYC','mprot:TRUEPROTC','mlip:TRUELIPC' Type of time interpolation for data in mam_mom files. Can be set to 'CYCLICAL', 'SERIAL', 'INTERP_MISSING_MONTHS', or 'FIXED'. Default: 'CYCLICAL' The cycle year of the prescribed aerosol flux data if mam_mom_type is 'CYCLICAL'. Format: YYYY Default: 1 The date at which the prescribed aerosol flux data is fixed if mam_mom_type is 'FIXED'. Format: YYYYMMDD Default: 0 The time of day (seconds) corresponding to mam_mom_fixed_ymd at which the prescribed aerosol flux data is fixed if mam_mom_type is 'FIXED'. Default: 0 seconds Bubble film thickness (in m) for marine organic aerosol emission mechanism. The physically reasonable range is approximately (0.1 - 1) x 10^ -6. Default: 0.1e-6 Switch to select mixing state assumption in marine organic aerosol code. Currently implemented options: 0 : total external mixture, add to mass; 1 : total external mixture, replace mass; 2 : total internal mixture, add to mass; 3 : total internal mixture, replace mass. Default:0 Selection of alternate parameterizations for marine organic matter emissions. Set fmoa=1 for Burrows et al., 2014 parameterization; fmoa=2 for Gantt et al. (2011, ACP) parameterization; fmoa=3 for simple parameterization based on Quinn et al., 2014; fmoa=4 for Rinaldi et al. (JGR, 2013). Default:1 Full pathname of the directory that contains the files specified in prescribed_ghg_filelist. Default: set by build-namelist. Filename of dataset for prescribed GHGs. Default: set by build-namelist. Filename of file that contains a sequence of filenames for prescribed GHGs. The filenames in this file are relative to the directory specied by prescribed_ghg_datapath. Default: set by build-namelist. Remove the file containing prescribed green house gas concentrations from local disk when no longer needed. Default: FALSE Names of variables containing GHG data in the prescribed GHG datasets. Default: none Type of time interpolation for data in prescribed_ghg files. Can be set to 'CYCLICAL', 'SERIAL', 'INTERP_MISSING_MONTHS', or 'FIXED'. Default: 'SERIAL' The cycle year of the prescribed green house gas data if prescribed_ghg_type is 'CYCLICAL'. Format: YYYY Default: 0 The date at which the prescribed green house gas data is fixed if prescribed_ghg_type is 'FIXED'. Format: YYYYMMDD Default: 0 The time of day (seconds) corresponding to prescribed_ghg_fixed_ymd at which the prescribed green house gas data is fixed if prescribed_ghg_type is 'FIXED'. Default: 0 seconds Full pathname of the directory that contains the files specified in prescribed_ozone_filelist. Default: set by build-namelist. Filename of dataset for prescribed ozone. Default: set by build-namelist. Filename of file that contains a sequence of filenames for prescribed ozone. The filenames in this file are relative to the directory specied by prescribed_ozone_datapath. Default: set by build-namelist. Name of variable containing ozone data in the prescribed ozone datasets. Default: 'ozone' Remove the file containing prescribed ozone concentrations from local disk when no longer needed. Default: FALSE Type of time interpolation for data in prescribed_ozone files. Can be set to 'CYCLICAL', 'SERIAL', 'INTERP_MISSING_MONTHS', or 'FIXED'. Default: 'SERIAL' The cycle year of the prescribed ozone data if prescribed_ozone_type is 'CYCLICAL'. Format: YYYY Default: 0 The date at which the prescribed ozone data is fixed if prescribed_ozone_type is 'FIXED'. Format: YYYYMMDD Default: 0 The time of day (seconds) corresponding to prescribed_ozone_fixed_ymd at which the prescribed ozone data is fixed if prescribed_ozone_type is 'FIXED'. Default: 0 seconds Full pathname of the directory that contains the files specified in prescribed_volcaero_filelist. Default: set by build-namelist. Filename of dataset for prescribed volcaero. Default: set by build-namelist. Filename of file that contains a sequence of filenames for prescribed volcaero. The filenames in this file are relative to the directory specied by prescribed_volcaero_datapath. Default: set by build-namelist. Name of variable containing volcaero data in the prescribed volcaero datasets. Default: 'MMRVOLC' Remove the file containing prescribed volcanic aerosol concentrations from local disk when no longer needed. Default: FALSE Default: 'VOLC_MIXING_RATIO' Type of time interpolation for data in prescribed_volcaero files. Can be set to 'CYCLICAL', 'SERIAL', 'INTERP_MISSING_MONTHS', or 'FIXED'. Default: 'SERIAL' The cycle year of the prescribed volcanic aerosol data if prescribed_volcaero_type is 'CYCLICAL'. Format: YYYY Default: 0 The date at which the prescribed volcanic aerosol data is fixed if prescribed_volcaero_type is 'FIXED'. Format: YYYYMMDD Default: 0 The time of day (seconds) corresponding to prescribed_volcaero_fixed_ymd at which the prescribed volcanic aerosol data is fixed if prescribed_volcaero_type is 'FIXED'. Default: 0 seconds Full pathname of dataset for radiative source function used in look up table photloysis Default: set by build-namelist. Full pathname of dataset for stratospheric aerosol densities Default: set by build-namelist. The cycle year of the stratospheric aerosol data if sad_cycle_type is 'CYCLICAL'. Format: YYYY Default: 0 The date at which the stratospheric aerosol data is fixed if sad_type is 'FIXED'.. Format: YYYYMMDD Default: 0 The time of day (seconds) corresponding to sad_fixed_ymd at which the stratospheric aerosol data is fixed if sad_type is 'FIXED'. Default: 0 seconds Type of time interpolation for stratospheric aerosol density data. Can be set to 'CYCLICAL', 'SERIAL', or 'FIXED'. Default: 'CYCLICAL' Full pathname of dataset for the coefficients of the NOEM nitric oxide model used to calculate its upper boundary concentration. Default: set by build-namelist. Full pathname of boundary dataset for soil erodibility factors. Default: set by build-namelist. Full pathname of time-variant boundary dataset for the time-dependent proxies for solar and geomagnetic activity( F10.7, F10.7a, Kp, Ap ). Default: set by build-namelist. List of full pathnames of surface emission datasets. The chemistry package reads in emission data from a set of netcdf files in units of "molecules/cm2/s". Each tracer species emissions is read from its own file as directed by the namelist variable srf_emis_specifier. The srf_emis_specifier variable tells the model which species have emissions and the file path for the corresponding species. That is, the srf_emis_specifier variable is set something like: srf_emis_specifier = 'CH4 -> /path/emis.ch4.nc', 'CO -> /path/emis.co.nc', etc... Each emission file can have more than one source. When the emission are read in the sources are summed to give a total emission field for the corresponding species. The emission can be read in as time series of data, cycle over a given year, or be fixed to a given date. Default: set by build-namelist. Full pathname of dataset containing tropopheric sulfate aerosols Default: set by build-namelist. Full pathname of dataset for TGCM upper boundary Default: set by build-namelist. Type of time interpolation for data in TGCM upper boundary file. Can be set to 'CYCLICAL', 'SERIAL', 'INTERP_MISSING_MONTHS', or 'FIXED'. Default: 'SERIAL' The cycle year of the TGCM upper boundary data if tgcm_ubc_type is 'CYCLICAL'. Format: YYYY Default: 0 The date at which the TGCM upper boundary data is fixed if tgcm_ubc_type is 'FIXED'. Format: YYYY Default: 0 The time of day (seconds) corresponding to tgcm_ubc_fixed_ymd at which the TGCM upper boundary data is fixed if tgcm_ubc_type is 'FIXED'. Default: 0 seconds Perturbation applied to the upper boundary temperature. Default: 0.0 Frequency in time steps at which the chemical equations are solved. Default: 1 Filename of dataset for linoz chlorine loading. Default: none. Type of time interpolation type for data in chlorine_loading_file Default: 'SERIAL' The time of day (seconds) corresponding to chlorine_loading_fixed_ymd at which the chlorine loading data is fixed if chlorine_loading_type is 'FIXED'. Default: 0 seconds The date at which the chlorine loading data is fixed if chlorine_loading_type is 'FIXED'. Format: YYYYMMDD Default: 0 Full pathname of the directory that contains the files specified in linoz_data_filelist. Default: none. Filename of dataset for LINOZ data. Default: none. Filename of file that contains a sequence of filenames of the linoz data. The filenames in this file are relative to the directory specied by linoz_data_datapath. Default: set by build-namelist. Type of time interpolation for data in linoz_data files. Can be set to 'CYCLICAL', 'SERIAL', 'INTERP_MISSING_MONTHS', or 'FIXED'. Default: 'SERIAL' Remove the file containing LINOZ data from local disk when no longer needed. Default: FALSE The cycle year of the LINOZ data if linoz_data_type is 'CYCLICAL'. Format: YYYY Default: 0 The date at which the LINOZ data is fixed if linoz_data_type is 'FIXED'. Format: YYYYMMDD Default: 0 The time of day (seconds) corresponding to linoz_data_fixed_ymd at which the LINOZ data is fixed if linoz_data_type is 'FIXED'. Default: 0 seconds Tunable number of layers with ozone decay from the surface in Linoz Default: 4 Tunable boundary layer concentration (ppb) to which Linoz ozone e-fold Default: 30.0e-9 Tunable Linoz e-fold time scale (in seconds) in the boundary layer Default: 172800.0 Tunable Linoz PSC ozone loss temperature (K) threshold Default: 193.0 Full pathname of the directory that contains the files specified in tracer_cnst_filelist. Default: set by build-namelist. Filename of dataset for the prescribed chemical constituents. Default: set by build-namelist. Filename of file that contains a sequence of filenames for the prescribed chemical constituents. The filenames in this file are relative to the directory specied by tracer_cnst_datapath. Default: set by build-namelist. Remove the file containing prescribed chemical constituents from local disk when no longer needed. Default: FALSE List of prescribed chemical constituents. Default: set by build-namelist. Type of time interpolation for data in tracer_cnst files. Default: 'SERIAL' The cycle year of the prescribed chemical constituents data if tracer_cnst_type is 'CYCLICAL'. Format: YYYY Default: 0 The date at which the chemical constituents data is fixed if tracer_cnst_type is 'FIXED'. Format: YYYYMMDD Default: 0 The time of day (seconds) corresponding to tracer_cnst_fixed_ymd at which the chemical constituents data is fixed if tracer_cnst_type is 'FIXED'. Default: 0 seconds Full pathname of the directory that contains the files specified in tracer_srcs_filelist. Default: set by build-namelist. Filename of dataset for the prescribed chemical sources. Default: set by build-namelist. Filename of file that contains a sequence of datasets for the prescribed chemical sources. The filenames in this file are relative to the directory specied by tracer_srcs_datapath. Default: set by build-namelist. Remove the file containing prescribed chemical sources from local disk when no longer needed. Default: FALSE List of prescribed chemical sources Default: set by build-namelist. Type of time interpolation for data in tracer_srcs files. Default: 'SERIAL' The cycle year of the prescribed chemical sources data if tracer_srcs_type is 'CYCLICAL'. Format: YYYY Default: 0 The date at which the chemical sources data is fixed if tracer_srcs_type is 'FIXED'. Format: YYYYMMDD Default: 0 The time of day (seconds) corresponding to tracer_srcs_fixed_ymd at which the chemical sources data is fixed if tracer_srcs_type is 'FIXED'. Default: 0 seconds If TRUE then use the FTUV method to calculate the photolysis reactions rates, otherwise use the look up table method. Default: FALSE If TRUE then use the Cloud-J method to calculate the photolysis reactions rates, otherwise use the lookup table method. Default: FALSE If TRUE then use cloud opacities in the Cloud-J calculation of photolysis reactions rates, Default: TRUE If TRUE then use aerosol opacities in the Cloud-J calculation of photolysis reactions rates, Default: FALSE If TRUE then output the photolysis rates calculated by the lookup table. This is diagnostic only, since these rates won't be used in the simulation. Default: FALSE If TRUE then output the photolysis rates calculated by Cloud-J using aerosol opacities. This is diagnostic only, since these rates won't be used in the simulation. Default: FALSE If TRUE then output the photolysis rates calculated by Cloud-J for a cloud-free column. This is diagnostic only, since these rates won't be used in the simulation. Default: FALSE Flag to allow (if TRUE) reading emission datasets in model native SE grid. Default: FALSE Full pathname of dataset for Chebyshev polynomial Coeff data used for photolysis cross sections. Default: set by build-namelist. Full pathname of cross section dataset for long wavelengh photolysis Default: set by build-namelist. Full pathname of cross section dataset for short wavelengh photolysis Default: set by build-namelist. List of species that undergo dry deposition. Default: set by build-namelist. Dry deposition method used. This specifies the method used to calculate dry deposition velocities of gas-phase chemical species. The available methods are: 'table' - prescribed method in CAM 'xactive_atm' - interactive method in CAM 'xactive_lnd' - interactive method in CLM Default: set by build-namelist File containing MEGAN emissions factors. Default: set by build-namelist. MEGAN specifier. Default: set by build-namelist. MEGAN mapped isoprene emissions facters switch If true then use mapped MEGAN emissions facters for isoprene. Default: .false. Filename of the prescribed waccm forcing data used with waccm_ghg chemistry. This contains prescribed constituents for non-LTE calculations and heating rates for wavelengths less than 200 nm. Default: set by build-namelist. Full pathname of the directory that contains the files specified in waccm_forcing_filelist. Default: set by build-namelist. A file that contains a sequence of filenames for prescribed waccm forcing data. The filenames in this file are relative to the directory specied by waccm_forcing_datapath. Default: set by build-namelist. Remove the file containing prescribed waccm forcing data from local disk when no longer needed. Default: FALSE Names of variables containing concentrations and heating rate in the prescribed waccm forcing datasets. Default: none Type of time interpolation for data in waccm_forcing files. Can be set to 'CYCLICAL', 'SERIAL', 'INTERP_MISSING_MONTHS', or 'FIXED'. Default: 'SERIAL' The cycle year of the prescribed waccm forcing data if waccm_forcing_type is 'CYCLICAL'. Format: YYYY Default: 0 The date at which the prescribed waccm forcing data is fixed if waccm_forcing_type is 'FIXED'. Format: YYYYMMDD Default: 0 The time of day (seconds) corresponding to waccm_forcing_fixed_ymd at which the prescribed waccm forcing data is fixed if waccm_forcing_type is 'FIXED'. Default: 0 seconds Full pathname of time-variant boundary dataset for H2O production/loss rates. Default: set by build-namelist. true => radiation feed backs from strat sulfur aerosol Default: false Determines which constituents are used from NLTE calculations. TRUE implies use prognostic constituents. FALSE implies use constituents from dataset specified by waccm_forcing_file. Default: TRUE for full WACCM code; FALSE for WACCM_GHG. TRUE implies assume cyclic qbo data. Default: FALSE Filepath for qbo forcing dataset. Default: Set by build-namelist. TRUE implies qbo package is active. Default: FALSE Filepath for time-variant solar proton ionization dataset. Default: Set by build-namelist. Filepath for file that lists a series of solar proton ionization dataset files. Default: Set by build-namelist. TRUE implies the offline solar proton ionization data file will be deleted when finished with it. Default: FALSE TRUE implies restart (branch) from a previous run with solar proton events. Default: TRUE Limiter used for horizontal tracer advection: 0: None 4: Sign-preserving limiter. 8: Monotone limiter. 9: CAAS monotone limiter. Default: 9 CAM-SE vertical remap algorithm 0: default value, Zerroukat monotonic splines 1: PPM vertical remap with mirroring at the boundaries (solid wall bc's, high-order throughout) 2: PPM vertical remap without mirroring at the boundaries (no bc's enforced, first-order at two cells bordering top and bottom boundaries) 10: PPM with 2nd order boundary treatment Default: 10 CAM physics forcing option: 0: tendencies 1: adjustments 2: hybrid Default: Set by build-namelist. Time integration method. Default: explicit. Use internally generated cubed sphere mesh of size 6 x se_ne x se_ne. If se_ne=0 (RRM grids), read mesh from Exodus file. Default: Set by build-namelist. Number of elements in the x direction, for doubly periodic mode Default: Set by build-namelist. Number of elements in the y direction, for doubly periodic mode Default: Set by build-namelist. Length of domain in meters in x direction, for doubly periodic mode Default: Set by build-namelist. Length of domain in meters in y direction, for doubly periodic mode Default: Set by build-namelist. Exodus format grid file used when se_ne=0 Default: Set by build-namelist. Mesh partitioning method. The only supported value in CAM is 4 (space-filling). Default: 4 Frequency with which diagnostic output is written to log (output every statefreq dynamics timesteps). Default: Set by build-namelist. SE's topology. Only "cube" is supported in CAM. "plane" allowed for SCREAM in doubly periodic mode. Default: Set by build-namelist. SE's geometry. Only "sphere" is supported in CAM. "plane" allowed for SCREAM in doubly periodic mode. Default: Set by build-namelist. Number of vertical threads. Default: 1. Run theta model in hydrostatic mode. Default: true. Indicates form of eqn. for vtheta in theta model. 0 is conservation form, 1 is expanded div form. Default: 1. Turn on use of balanced geopotential state to reduce pressure gradient discretization error. Default: 0 Modifications to hyperviscosity to minimize dissipation of background reference states. Default: 0 For potential temperature equation, use Laplacian on pressure surfaces in hyperviscosity operator. Default: 0 Max threshold for Laplacian on pressure surface d(theta)/dp correction term. Default (set by dycore) Minimum threshold for virtual potential temperature in the theta dycore. Values below this will trigger a warning and be clipped. Default: (set by dycore). Defines which map is used for reference element in homme. Must be 2 for compsets using TempestRemap mapping files. Default: 2 Number of dynamics steps per physics timestep. dt_remap = dtime/se_nsplit dt_tracer = dt_remap / rsplit dt_dyn = dt_tracer / qsplit dt_dyn_vis = dt_dyn / hypervis_subcycle dt_tracer_vis = dt_tracer / hypervis_subcycle_q Default: Set by build-namelist. Number of tracer steps per remap step. If rsplit=0, vertically lagrangian code is off. Default: Set by build-namelist. Number of dynamics steps per tracer step. Default: Set by build-namelist. Dynamics timestep. Replaces se_nsplit. The tracer advection timestep is dt_tracer_factor*se_tstep, where se_tstep is the dynamics timesteps. dt_tracer_factor*se_tstep must divide dtime, and one of dt_remap_factor and dt_tracer_factor must divide the other. Replaces qsplit, rsplit. Default: Set by build-namelist. The vertically Lagrangian remap timestep is dt_remap_factor*se_tstep, where se_tstep is the dynamics timesteps. dt_remap_factor*se_tstep must divide dtime, and one of dt_remap_factor and dt_tracer_factor must divide the other. Replaces qsplit, rsplit. If dt_remap_factor=0, vertically Lagrangian code is off. Time stepping method for SE dycore tstep_type=1 RK2 followed by qsplit-1 Leapfrog steps; second-order accurate in time (CESM1.2.0 setting) tstep_type=2 RK2-SSP 3 stage (as used by tracers) tstep_type=3 classic Runga-Kutta (RK) 3 stage tstep_type=5 Kinnmark&Gray Runga-Kutta (RK) 5 stage (3rd order accurate in time) tstep_type=9 Kinnmark&Gray Runga-Kutta IMEX Default: Set by build-namelist. Hyperviscosity operator is the Laplacian^hypervis_order. The only supported value in CAM is "2". Default: Set by build-namelist. Number of hyperviscosity subcycles per dynamics timestep. Default: Set by build-namelist (probably 2). If non-zero, subcycle TOM diffusion operator separately from hyperviscsoity with dt_vis_tom=dt_dyn/hypervis_subcycle_tom. Default: 1 Number of hyperviscosity subcycles done in tracer advection code. Default: Set by build-namelist. Dynamics hyperviscosity [m^4/s]. Default: Set by build-namelist. Weighting of divergence component when applying hyperviscosity. If < 0, uses nu. Default: -1. Hyperviscosity applied to dynamics scalars [m^4/s]. If < 0, uses nu. Default: -1. Hyperviscosity applied to dp3d (layer thickness when running vertically lagrangian dynamics) [m^4/s]. If < 0, uses nu. Default: -1. Hyperviscosity applied during tracer advection [m^4/s]. If < 0, uses nu. Default: -1. Second-order viscosity applied only near the model top [m^2/s]. Default: Set by build-namelist. Bottom of sponge layer in hPa. Default: 0 (use default value based on reference pressure at model top). Default: Set by build-namelist. Default: Set by build-namelist. Tracer transport algorithm: 0: Eulerian flux-form. 12: COMPOSE semi-Lagrangian. Default: 12 Constrained density reconstuctor (CDR) for property preservation: 2: QLT 3: CAAS 20: QLT with superlevels of 8 levels. 21: QLT with superlevels of 8 levels; use local CAAS over sublevels. 30: CAAS with superlevels of 8 levels. Default: (set by dycore) Correctness check the CDR. Default: (set by dycore) Number of levels, counting from the top, that are allowed to use the nearest point in the halo to the departure point, when necessary. Default: (set by dycore) Number of tracers, starting from 1, to which to apply hyperviscosity. For example, to apply hyperviscosity to moisture, the first tracer, set the value to 1. Hyperviscosity is applied using nu_q as the coefficient. Default: (set by dycore) Remap algorithm to use to map between FV physics grid and GLL dynamics grid. 0, default, provides the original algorithms; 1 provides high-order algorithms implemented in gllfvremap_mod. Default: (set by dycore). Default: 4 Default: -1 Default: "netcdf" Default: 1 Default: 0 Default: -1 Default: 0 Default: .false. Full pathname of docn restart file. Default: set by build-namelist. Full pathname of docn restart file. Default: set by build-namelist. Full pathname of docn restart file. Default: set by build-namelist. Full pathname of time-variant sea-surface temperature and sea-ice concentration boundary dataset. Default: set by build-namelist. Full pathname of Default: set by build-namelist. Full pathname of grid file for time-variant sea-surface temperature and sea-ice concentration boundary dataset. Default: set by build-namelist. Flag for yearly cycling of SST data. If set to FALSE, a multi-year dataset is assumed, otherwise a single-year dataset is assumed, and SSTs will be cycled over the first 12 values in the file. Not used if running with CCSM. Default: TRUE The first year of the multi-year SST dataset which is read by CICE for the prescribed ice fraction. This needs to be set for AMIP simulations. Default: 0 The last year of the multi-year SST dataset which is read by CICE for the prescribed ice fraction. This needs to be set for AMIP simulations. Default: 0 Full pathname of master restart file from which to branch. Setting is Required for branch run. Default: none This is only used when running as part of CCSM. If n > 0 then sea ice global energy checking will be done every n timesteps. If n < 0 then sea ice global energy checking will be done every n days. Full pathname of master restart file from which to branch. Setting is Required for branch run. Default: none Prognostic snow over ice, currently limited to 0.5m. If this is false then a snow climatology is used. Default: TRUE If true => resets the csim ice properties to base state, i.e., no snow cover, TSICE and TS[1-4] are all set to freezing. The csim is sensitive to imbalances between the surface temperature and ice temperatures. When using an initial conditions dataset interpolated from a different resolution you may have to set this to true to get csim to run. If set to true you will have to allow time for the ice to spin up. Default: FALSE Name of file that the atmosphere component log messages will be written to. By default all log messages are written to stdout. Default: "" Absolute pathname of directory that the file specified by atm_logfile will be written to. Default: "." Name of file that the driver component log messages will be written to. By default all log messages are written to stdout. Default: "" Absolute pathname of directory that the file specified by cpl_logfile will be written to. Default: "." Name of file that the land component log messages will be written to. By default all log messages are written to stdout. Default: "" Absolute pathname of directory that the file specified by lnd_logfile will be written to. Default: "." Name of file that the runoff component log messages will be written to. By default all log messages are written to stdout. Default: "" Absolute pathname of directory that the file specified by rof_logfile will be written to. Default: "." Default: FALSE Default: FALSE Default: FALSE Default: FALSE Default: Stride used in selecting the processes in the atm communicator group. Default: 1 Root process of the atm communicator group. Default: 0 Number of atm tasks. Default: total number of tasks assigned to job. Number of threads in each atm task. Default: 1 Stride used in selecting the processes in the lnd communicator group. Default: 1 Root process of the lnd communicator group. Default: 0 Number of lnd tasks. Default: total number of tasks assigned to job. Number of threads in each lnd task. Default: 1 Stride used in selecting the processes in the ice communicator group. Default: 1 Root process of the ice communicator group. Default: 0 Number of ice tasks. Default: total number of tasks assigned to job. Number of threads in each ice task. Default: 1 Stride used in selecting the processes in the ocn communicator group. Default: 1 Root process of the ocn communicator group. Default: 0 Number of ocn tasks. Default: total number of tasks assigned to job. Number of threads in each ocn task. Default: 1 Stride used in selecting the processes in the rof communicator group. Default: 1 Root process of the rof communicator group. Default: 0 Number of rof tasks. Default: total number of tasks assigned to job. Number of threads in each rof task. Default: 1 Stride used in selecting the processes in the cpl communicator group. Default: 1 Root process of the cpl communicator group. Default: 0 Number of cpl tasks. Default: total number of tasks assigned to job. Number of threads in each cpl task. Default: 1 If true, run model in "aqua planet" mode. Only one of atm_adiabatic, atm_ideal_phys, or aqua_planet can be true. Default: FALSE Set the sst to a particular analytic solution. **Not currently functional** The type of analytic solution is currently hardcoded with a parameter in ocn_comp.F90. Default: 1 If TRUE, do not run model physics, only run the dynamical core. Only one of atm_adiabatic, atm_ideal_phys, or aqua_planet can be true. Default: FALSE If FALSE then CAM will set the deposition fluxes to zero before sending them to the coupler. A side effect of setting the variable chem_rad_passive to TRUE is that this variable will be set to FALSE (the deposition fluxes must be set to zero in order for the chemistry not to impact the climate). Default: TRUE If TRUE run the idealized Held&Suarez physics package. Only one of atm_adiabatic, atm_ideal_phys, or aqua_planet can be true. Default: FALSE bit for bit flag Default: FALSE If TRUE, use the pre-existing case name for a branch run. Default: FALSE annual budget level Default: 1 daily budget level Default: 0 instantaneous budget level Default: 0 long term budget level written at end of year Default: 1 long term budget level written at end of run Default: 0 monthly budget level Default: 1 Case title. Default: none. Case identifier. The value of case_name is used in the default filenames of both the history and restart files (see the hfilename_spec namelist option). The "%c" string in the hfilename_spec templates are expanded using the value of case_name when history filenames are created. Default: set by build-namelist. Use netcdf 64 bit offset, large file support. Default: FALSE T => do heat/water budget diagnostics Default: FALSE T => enable run time setting of thread count for each component Default: FALSE T => no diurnal cycle in ocn albedos. Default: FALSE Selects E,P,R adjustment technique. Default: 'off' Current machine. Default: 'unknown' Debug flag. Default: 1 Postfix for output log files. Default: '.log' Model version. Default: 'unknown' Couple ocean on atm timestep. Default: TRUE Earth's eccentricity of orbit. (unitless: typically 0. to 0.1). Setting is Required if orb_iyear not set. Not used when running as part of CCSM. Default: none Mode to specify how orbital parameters are to be set. Not used when running as part of CCSM. Default: fixed_year Year (AD) used to compute earth's orbital parameters. If not set, then use the values from the orb_eccen, orb_mvelp, and orb_obliq namelist parameters. If only orb_iyear is set, orbital parameters will be computed automatically (based on Berger, 1977). If one of orb_eccen, orb_mvelp, or orb_obliq is set, all three must be set. If all four of the above are set by the user, orb_iyear takes precedence. Setting is Required unless orb_eccen, orb_mvelp, and orb_obliq are set. Not used when running as part of CCSM. Default: 1990. Earth's moving vernal equinox at perihelion (degrees: 0. to 360.0). Setting is Required if orb_iyear not set. Not used when running as part of CCSM. Default: none Earth's orbital angle of obliquity (degrees: -90. to +90., typically 22. to 26.). Setting is Required if orb_iyear not set. Not used when running as part of CCSM. Default: none Root output files Default: './' Set to TRUE to specify that the run will use a perpetual calendar, i.e., a diurnal cycle will be present for the fixed calendar day specified by perpetual_ymd. Default: FALSE Perpetual date encoded in an integer as (year*1000 + month*100 + day). If aqua_planet = .true. then perpetual_ymd is ignored and the perpetual date is set to 321. Default: none. Restart filename. Default: none List of namelist variables that may be overridden on a restart run. Default: none Restart pointer filename. Default: 'rpointer.drv' are ocean and ice grids same lat/lon/size Default: TRUE Latitude value of single column. Default: none. Longitude value of single column. Default: none. Set to TRUE to turn on single column mode. Default: FALSE Run type. 'startup' is an initial run. 'continue' is a restart run. 'branch' is a restart run in which properties of the output history files may be changed. Default: 'startup' Current user. Default: 'unknown' Invoke vector mapping option Default: 'cart3d' Flag to indicate whether to use the double-double distributed sum algorithm rather than the (almost) infinite precision reproducible distributed sum algorithm. Default: FALSE Flag to indicate whether a distributed sum that violates the difference tolerance specified by reprosum_diffmax should be recomputed using a floating point-based (but nonscalable) reproducible algorithm. Default: FALSE Relative difference between repro and nonrepro algorithms that will generate a warning. This will also force a recompute using a nonscalable algorithm if reprosum_recompute is true. If less than zero, then the difference will not be evaluated (and the nonrepro algorithm will not be computed). Default: -1.0 Coupling interval between the atmosphere and other system components. This is how frequently information can be communicated between the atmosphere and the surface models. Default: set by build-namelist. Default: Calendar type "NO_LEAP" for consistent 365-days per year or "GREGORIAN" to include leap-years. Note that if "GREGORIAN" is selected leap-years will be used in the time manager, but the calculation of the earth's orbit still assumes 365 day years. Valid values are "NO_LEAP" or "GREGORIAN". Default: "NO_LEAP" Write restart at end of run. Default: TRUE Default: set by build-namelist. Default: Default: set by build-namelist. Default: Default: set by build-namelist. Default: Default: set by build-namelist. Default: Reference time-of-day expressed as seconds past midnight. Used in conjuction with ref_ymd to set the reference time. Default: set to start_tod. Reference date encoded in an integer as (year*1000 + month*100 + day). Used in conjuction with ref_tod to set the reference time which is used to define a time coordinate for the output history files. The convention for the unit string of a time coordinate is of the form "time-unit since reference-time", for example, "days since 1990-01-01 00:00:00". The reference-time part of this string is specified by the ref_ymd and ref_tod variables. Default: set to start_ymd. Set the restart interval as a number of elapsed time units which are specified by restart_option. Default: 1 Set the interval between writing restart files using one of the options 'nsteps', 'ndays', 'nmonths', or 'nyears', in conjuction with stop_n to set the number of time units. A convenience option allows specifying that restart files be written at the end of each month or at the end of each year by using the options 'monthly' or 'yearly' respectively. It is also possible to request that no restart files be written via the option 'none', or that restart files be written only at the end of the run via the option 'end'. Default: 'monthly' Start time-of-day expressed as seconds past midnight. Used in conjuction with start_ymd to set the start time. Default: 0. Start date encoded in an integer as (year*1000 + month*100 + day). Used in conjuction with start_tod to set the start date of the simulation. Default: set by build-namelist. Set the length of run as a number of elapsed time units which are specified by stop_option. Default: 1 Set the length of run as an elapsed time using one of the options 'nsteps', 'ndays', 'nmonths', or 'nyears', in conjuction with stop_n to set the number of elapsed time units. Alternatively, set the final simulation time in absolute terms by using the option 'date' in conjuction with stop_ymd, and stop_tod to specify a date and time of day at which the simulation should stop. Default: 'ndays' Stop time-of-day expressed as seconds past midnight. Used in conjuction with stop_ymd to set the stop time. Default: 0. Stop date encoded in an integer as (year*1000 + month*100 + day). Used in conjuction with stop_tod to set the stop date of the simulation. Default: none. Clumps per processor. Default: Number of threads per process; or 1 if no OMP. Default: 355. Type of CO2 feedback. Default: 'constant' for BGC mode on if to create crop as separate landunits Default: FALSE Full pathname of grid/landfrac data file (on atm grid). Default: set by build-namelist. Full pathname of atmosphere topography data file (on atm grid). Default: set by build-namelist. Full pathname of initial conditions file. Default: set by build-namelist. Full pathname of land topography file. Default: set by build-namelist. Full pathname of PFT data file. Default: set by build-namelist. Full pathname of time varying PFT data file. Default: set by build-namelist. Full pathname of input datafile for rtm. Default: set by build-namelist. Full pathname of surface data file. Default: set by build-namelist. SNICAR (SNow, ICe, and Aerosol Radiative model) optical data file name SNICAR (SNow, ICe, and Aerosol Radiative model) snow aging data file name Per file averaging flag. Default: ' ',' ',' ',' ',' ',' ' TRUE implies do grid averaging. One value for each output history file. Default: All TRUE. TRUE indicates no default history fields. Default: FALSE Fields to exclude from history file 1. Default: none. Fields to exclude from history file 2. Default: none. Fields to exclude from history file 3. Default: none. Fields to exclude from history file 4. Default: none. Fields to exclude from history file 5. Default: none. Fields to exclude from history file 6. Default: none. Fields to add to history file 1. Default: none. Fields to add to history file 2. Default: none. Fields to add to history file 3. Default: none. Fields to add to history file 4. Default: none. Fields to add to history file 5. Default: none. Fields to add to history file 6. Default: none. Per file maximum number of time samples. Default: 30,30,30,30,30,30 Per file history output precision. Default: 2,2,2,2,2,2 Per file history write frequency (0=monthly) Default: 0,-24,-24,-24,-24,-24 Per file type1d Default: ' ',' ',' ',' ',' ',' ' Full pathname of master restart file for branch run. Default: none. number of segments per clump for decomposition Default: 20 on to output NetCDF files in large-file format Default: FALSE FALSE implies don't write any restart files. Default: TRUE If greater than one, average rtm over rtm_nsteps time steps This varible is only used internally by build-namelist to determine correct defaults for datasets such as surface datasets, initial conditions, dynamic PFT, aerosol-deposition, Nitrogen deposition rates etc. Default: set by build-namelist. Urban air conditioning/heating and wasteheat Default: 'off' TRUE if want urban traffic flux Default: FALSE true if want output written Default: FALSE River runoff Default: NULL Length of siderial day [seconds]. Default: set to shr_const value Radius of Earth [m]. Default: set to shr_const value Earth Rotation rate [m/s]. Default: set to shr_const value Acceleration of gravity [m/s**2]. Default: set to shr_const value Molecular weight of dry air [g/mol] Default: set to shr_const value Molecular weight of water [g/mol]. Default: set to shr_const value Heat capacity of water vapor at constant pressure [J/kg/K]. Default: set to shr_const value Freezing point of water [K]. Default: set to shr_const value Turbulent mountain stress parameter used when turbulent mountain stress calculation is turned on. See do_tms. Default: 1.0 for CAM, set by build-namelist for WACCM, T31 Factor determining z_0 from orographic standard deviation [ no unit ] Used when turbulent mountain stress calc is turned on. See do_tms. set by build-namelist for WACCM, T31 Planetary rotation rate (radians/second). Value set here is ONLY used in the atmosphere. Default: set to shr_const value