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Parcels v1.1.1: a Lagrangian Ocean Analysis tool for the petascale age

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@delandmeterp delandmeterp released this 03 Oct 15:52
v1.1.1
b1c3d09
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Parcels v1.1.1 builds on the previous v1.1.0 release. Major changes since then:

  • In Fieldset.from_netcdf(), the format of filenames argument has been enriched (#463).
    As before, filenames can be:

    • list of files
    • dictionaries of list of files, where the dictionary keys are field names

    On top of that, filenames can now be:

    • dictionaries of lists of files, where the dictionary keys are dimension names: filenames[dimension_name] = [files]
    • dictionaries of dictionaries of lists of files: filenames[field_name][dimension_name] = [files]

    This particularly affects the function Fieldset.from_nemo():

    New filenames looks like:

    filenames = {'U': {'lon': data_path + 'mesh_mask.nc4',
                   'lat': data_path + 'mesh_mask.nc4',
                   'data': data_path + 'U_purely_zonal-ORCA025_grid_U.nc4'},
             'V': {'lon': data_path + 'mesh_mask.nc4',
                   'lat': data_path + 'mesh_mask.nc4',
                   'data': data_path + 'V_purely_zonal-ORCA025_grid_V.nc4'}}

    instead of:

    filenames = {'U': data_path + 'U_purely_zonal-ORCA025_grid_U.nc4',
             'V': data_path + 'V_purely_zonal-ORCA025_grid_V.nc4',
             'mesh_mask': data_path + 'mesh_mask.nc4'}

    This modification enables to easily read 3d curvilinear NEMO fields, when the depth dimension is in the data-files.

  • A new TimeConverter class converts between dates and the number of seconds that Parcels uses under the hood. This enables to read netcdf files with less common time formats, such as NOLEAP. (#456)

  • New netcdf_engine as argument for Fieldset.from_netcdf(), enables to open netcdf files with a different engine when the default netcdf4 engine does not work. (#460)

  • Improved error messages for C-kernel generator (#457)

  • Minor bug fixes

Note that it is now recommended to use a recent version of xarray (>=0.10.8) together with Parcels, since it better parses some netcdf files used by common OGCMs.

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