CESM2.1.5 DICE2.0 Namelist Definitions
Model Version: 2.1.5
Change CESM Version
Component Tag:
cime5.6.49
HTML Created:
2024-09-20
Variable | Namelist Group | Category | Entry Type | Valid Values | Possible Default Values | Description and out-of-the-box Default |
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decomp | dice_nml | dice | char | ['1d', 'root'] | set the decomposition option for the data model. valid options are placing the global array on the root task or a simple stride-one load balanced one-dimensional decomposition. other decompositions may be added in the future. valid values are ['root','1d']. 1d = Vector decomposition root = run only on the master task |
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flux_qacc | dice_nml | dice | logical | ['.true.', '.false.'] | activates water accumulation/melt wrt Q |
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flux_qacc0 | dice_nml | dice | real | ['any real'] | initial water accumulation value |
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flux_qmin | dice_nml | dice | real | ['any real'] | bound on melt rate |
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flux_swpf | dice_nml | dice | real | ['any real'] | short-wave penatration factor |
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force_prognostic_true | dice_nml | dice | logical | ['.true.', '.false.'] | If true, prognostic is forced to true. |
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restfilm | dice_nml | dice | char | ['any char'] | Model restart filename for the data ice model data. This is optional. If both restfils and restfilm are undefined, the restart filename will be read from the ICE restart pointer file (or files for multiple instances). |
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restfils | dice_nml | dice | char | ['any char'] | Stream restart filename for the data ice stream data. This is optional. If both restfils and restfilm are undefined, the restart filename will be read from the DICE restart pointer file (or files for multiple instances). |
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datamode | shr_strdata_nml | streams | char | ['NULL', 'SSTDATA', 'COPYALL'] | general method that operates on the data. this is generally implemented in the data models but is set in the strdata method for convenience. valid options are dependent on the data model and will be described elsewhere. NULL is always a valid option and means no data will be generated. default='NULL' datamode = "NULL" Turns off the data model as a provider of data to the coupler. The ice_present flag will be set to false and the coupler will assume no exchange of data to or from the data model. dataMode = "COPYALL" Copies all fields directly from the input data streams Any required fields not found on an input stream will be set to zero. dataMode = "SSTDATA" Is a prognostic mode. It requires data be sent to the ice model. Ice fraction (extent) data is read from an input stream, atmosphere state variables are received from the coupler, and then an atmosphere-ice surface flux is computed and sent to the coupler. It is called "SSTDATA" mode because normally the ice fraction data is found in the same data files that provide SST data to the data ocean model. They are normally found in the same file because the SST and ice fraction data are derived from the same observational data sets and are consistent with each other. Set by the xml variable DICE_MODE in env_run.xml Currently, DICE_MODE can be [ssmi, ssmi_iaf, null] If DICE_MODE is set to ssmi or ssmi_iaf, datamode will be set to SSTDATA If DICE_MODE is set to null, datamodel will be set to NULL |
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domainfile | shr_strdata_nml | streams | char | ['any char'] | spatial gridfile associated with the strdata. grid information will be read from this file and that grid will serve as the target grid for all input data for this strdata input. |
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dtlimit | shr_strdata_nml | streams | real(30) | ['any real(30)'] | array (up to 30 elements) of delta time ratio limits placed on the time interpolation associated with the array of streams. this real value causes the model to stop if the ratio of the running maximum delta time divided by the minimum delta time is greater than the dtlimit for that stream. for instance, with daily data, the delta time should be exactly one day throughout the dataset and the computed maximum divided by minimum delta time should always be 1.0. for monthly data, the delta time should be between 28 and 31 days and the maximum ratio should be about 1.1. the running value of the delta time is computed as data is read and any wraparound or cycling is also included. this input helps trap missing data or errors in cycling. to turn off trapping, set the value to 1.0e30 or something similar. |
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fillalgo | shr_strdata_nml | streams | char(30) | ['copy', 'bilinear', 'nn', 'nnoni', 'nnonj', 'spval'] | array (up to 30 elements) of fill algorithms associated with the array of streams. valid options are just copy (ie. no fill), special value, nearest neighbor, nearest neighbor in "i" direction, or nearest neighbor in "j" direction. valid values: 'copy','spval','nn','nnoni','nnonj' |
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fillmask | shr_strdata_nml | streams | char(30) | ['nomask', 'srcmask', 'dstmask', 'bothmask'] | plays no role is fill algorithm at the present time. valid values: "nomask,srcmask,dstmask,bothmask" |
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fillread | shr_strdata_nml | streams | char(30) | ['any char'] | array (up to 30 elements) of filenames associated with the array of streams. specifies the weights file to read in instead of computing the weights on the fly for the fill operation. if this is set, fillalgo and fillmask are ignored. |
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fillwrite | shr_strdata_nml | streams | char(30) | ['any char'] | array (up to 30 elements) of filenames associated with the array of streams. specifies the weights file to generate after weights are computed on the fly for the fill operation. this allows a user to save and reuse a set of weights later. |
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mapalgo | shr_strdata_nml | streams | char(30) | ['copy', 'bilinear', 'nn', 'nnoni', 'nnonj', 'spval'] | array (up to 30 elements) of fill algorithms associated with the array of streams. valid options are copy by index, set to special value, nearest neighbor, nearest neighbor in "i" direction, nearest neighbor in "j" direction, or bilinear. valid values: copy,spval,nn,nnoni,nnonj,bilinear |
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mapmask | shr_strdata_nml | streams | char(30) | ['nomask', 'srcmask', 'dstmask', 'bothmask'] | array (up to 30 elements) of masking algorithms for mapping input data associated with the array of streams. valid options are map only from valid src points, map only to valid destination points, ignore all masks, map only from valid src points to valid destination points. valid values: srcmask, dstmask, nomask, bothmask |
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mapread | shr_strdata_nml | streams | char(30) | ['any char'] | array (up to 30 elements) of filenames associated with the array of streams. specifies the weights file to read instead of computing weights on the fly for the mapping (interpolation) operation. if this is set, mapalgo and mapmask are ignored. |
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mapwrite | shr_strdata_nml | streams | char(30) | ['any char'] | array (up to 30 elements) of filenames associated with the array of streams. specifies the weights file to generate after weights are computed on the fly for the mapping (interpolation) operation. this allows a user to save and reuse a set of weights later. |
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readmode | shr_strdata_nml | streams | char(30) | ['single', 'full_file'] | array (up to 30 elements) of reading mode associated with the array of streams. specifies the mode of reading temporal stream dataset. valid options are "single" (read temporal dataset one at a time) or "full_file" (read all entires of temporal dataset in a given netcdf file) valid values: single,full_file |
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streams | shr_strdata_nml | streams | char(30) | ['any char'] | character array (up to 30 elements) of stream input files. this string is actually parsed by a stream method and so the format is specified by the stream module. this string consists of a "stream_input_filename year_align year_first year_last". the stream_input_filename is a stream text input file and the format and options are described elsewhere. year_align, year_first, and year_last provide information about the time axis of the file and how to relate the input time axis to the model time axis. default="null". |
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streamslist | streams_file | streams | char(100) | ['any char'] | List of streams used for the given dice_mode. |
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strm_data_file | derived | streams | char | ['any char'] | does not appear in namelist - only used to set domain and data information |
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strm_datdir | streams_file | streams | char | ['any char'] | Stream data file directory. |
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strm_datfil | streams_file | streams | char | ['any char'] | Stream data file path(s). |
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strm_datvar | streams_file | streams | char | ['any char'] | Stream data variable name(s). |
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strm_domdir | streams_file | streams | char | ['any char'] | Stream domain file directory. |
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strm_domfil | streams_file | streams | char | ['any char'] | Stream domain file path(s). |
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strm_domvar | streams_file | streams | char | ['any char'] | Stream domain variable name(s). |
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strm_grid_file | derived | streams | char | ['any char'] | does not appear in namelist - only used to set domain and data information |
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strm_offset | streams_file | streams | integer | ['any integer'] | Stream offset. |
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strm_year_align | streams_file | streams | integer | ['any integer'] | Simulation year to align stream to. |
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strm_year_end | streams_file | streams | integer | ['any integer'] | Last year of stream. |
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strm_year_start | streams_file | streams | integer | ['any integer'] | First year of stream. |
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taxmode | shr_strdata_nml | streams | char(30) | ['extend', 'cycle', 'limit'] | array of time axis modes associated with the array of streams for handling data outside the specified stream time axis. valid options are to cycle the data based on the first, last, and align settings associated with the stream dataset, to extend the first and last valid value indefinitely, or to limit the interpolated data to fall only between the least and greatest valid value of the time array. valid values: cycle,extend,limit extend = extrapolate before and after the period by using the first or last value. cycle = cycle between the range of data limit = restrict to the period for which the data is valid |
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tintalgo | shr_strdata_nml | streams | char(30) | ['coszen', 'nearest', 'linear', 'lower', 'upper'] | array (up to 30 elements) of time interpolation options associated with the array of streams. valid values: lower,upper,nearest,linear,coszen lower = Use lower time-value upper = Use upper time-value nearest = Use the nearest time-value linear = Linearly interpolate between the two time-values coszen = Scale according to the cosine of the solar zenith angle (for solar) |
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vectors | shr_strdata_nml | streams | char | ['any char'] | list of paired colon delimited field names that should be treated as vectors when carrying out spatial interpolation. unlike other character arrays in this namelist, this array is completely decoupled from the list of streams. this is a list of vector pairs that span all input streams where different fields of the vector pair could appear in different streams. for example, vectors = 'u:v','taux:tauy'. |
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Variable | Namelist Group | Category | Entry Type | Valid Values | Possible Default Values | Description and out-of-the-box Default |