NEDAS.models.nextsim.dg.restart module

NEDAS.models.nextsim.dg.restart.read_var(fname: str, varnames: list[str]) → MaskedArray[source]

reading a variable from a netcdf file

Parameters:

  • fname (str) – forcing file name

  • varnames (list[str]) – list of variable names

  • itime (int) – time index in the forcing file

NEDAS.models.nextsim.dg.restart.write_var(fname: str, varnames: list[str], data: ndarray) → None[source]

Write the perturbed variable back to the forcing file

Parameters:

  • fname (str) – forcing file name

  • varnames (list[str]) – list of variable names

  • itime (int) – time index in the forcing file

NEDAS.models.nextsim.dg.restart.get_restart_filename(file_options: dict, i_ens: int, time: datetime) → str[source]
NEDAS.models.nextsim.dg.restart.perturb_restart(restart_options: dict, file_options: dict, debug=False) → None[source]

perturb the initial conditions in restart files

Parameters:

  • restart_options (dict) – perturbation options under the section of perturb from the yaml file

  • file_options (dict) – This dictionary is constructed before the function is called. Keys: fname (str, path to the file to perturb), lon_name (str, longitude variable name from the restart section of the model config), lat_name (str, latitude variable name from the restart section of the model config).