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'

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. default="null".

array 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. the valid fillalgo values are ['copy','spval','nn','nnoni','nnonj']. default="nn".

plays no role is fill algorithm at the present time. default="nomask".

array of filenames associated with the array of streams. specifies the weights file to read instead of computing the weights on the fly for the fill operation. if this is set, fillalgo and fillmask are ignored. default="unset".

array 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. default="unset".

array 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. default=1.5.

specifies the rank of the root of set of iotasks when pio IO is active. this value should be between 0 and the total number of tasks for the data model minus one, and the io_root+(num_iotasks-1)*(io_stride)+1 should be less than the total number of tasks for the data model. this is unused with io_type='netcdf'. default=0.

specifies the stride of the iotasks across the global mpi ranks. the io_root+(num_iotasks-1)*(io_stride)+1 should be less than the total number of tasks for the data model. this is unused with io_type='netcdf'. default=4.

this specifies the IO implementation method. valid options are standard netcdf, serial netcdf through the pio interface, or parallel netcdf through the pio interface. the valid io_type values are ['netcdf','pio_netcdf','pio_pnetcdf']. default='pio_netcdf'.

array 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. the valid mapalgo values are ['copy','spval','nn','nnoni','nnonj','bilinear']. default="bilinear".

array 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. the valid mapmask values are ['srcmask', 'dstmask', 'nomask', 'bothmask']. default="dstmask".

array 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. default="unset".

array 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. default="unset".

this is needed only with pio binary IO which is currently not supported.

specifies the number of mpi tasks that should be active with pio IO. this should be no more than the total number of mpi tasks for the data model and can be as small as one. this is inactive with io_type='netcdf'. the io_root+(num_iotasks-1)*(io_stride)+1 should be less than the total number of tasks for the data model. default=1.

list 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".

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. the valid taxMode values are ['cycle','extend','limit']. default="cycle".

array of time interpolation options associated with the array of streams. valid options are lower bound, upper bound, nearest data, linear interpolation, or interpolation based upon the cosine of the zenith angle. the valid tintalgo values are ['lower','upper','nearest','linear','coszen']. default="linear".

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'. default="".