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Optional standard name modifier defined by the netcdf CF convention. This is currently only used for export to netcdf files. See http://cfconventions.org/Data/cf-conventions/cf-conventions-1.6/build/cf-conventions.html#standard-name
allowMissing
Option to indicate if a time series of this parameter type is allowed to contain missing values when being used by a model or a transformation. When omitted this value will default to 'true'. If this is used for a transformation, then it is also required to set the option checkMissing in the inputVariable of the transformation to true.
cellMethod
Optional cell method (for time dimension) as defined in the netcdf CF convention. This is currently only used for export to netcdf files. See http://cfconventions.org/Data/cf-conventions/cf-conventions-1.6/build/cf-conventions.html#cell-methods
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