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Input data may be specified either by giving a path in the Source parameter or by giving a GRIB-based data object in the Data parameter. Note that you should specify either Source or Data, not both.
Specifies the GRIB file path.
Drop a MARS Retrieval or a GRIB file icon inside this icon field. In Python or Macro, supply a Fieldset object.
Select a method for specifying the output grid.
If Grid Definition Mode is set to Template, supply the path to a template GRIB file; the output GRIB will use the same grid as the template.
If Grid Definition Mode is set to Template, supply a GRIB-based data object in the Data parameter; the output GRIB will use the same grid as the template.
Supply a grid definition as described here: grid - keyword in MARS/Dissemination request.
Examples of valid grid definitions:
| GUI | Python / Macro | Result |
|---|---|---|
| 1/1 | [1, 1] | A regular lat/lon grid with 1x1 degree point spacing |
| 0.25/0.25 | [0.25, 0.25] | A regular lat/lon grid with 0.25x0.25 degree point spacing |
| O1280 | "O1280" | An octahedral reduced Gaussian grid, octahedral with 1280 latitude lines between the pole and equator |
| N640 | "N640" | An 'original' reduced Gaussian grid, with 640 latitude lines between the pole and equator |
| F400 | "F400" | A regular Gaussian grid, with 400 latitude lines between the pole and equator |
Specifies a geographical area over which to carry out the interpolation, the default being for the whole globe. Enter coordinates (lat/lon) of an area separated by a "/" (North/West/South/East), or in Macro or Python provide a list, e.g. [north, west, south, east]; alternatively, use the assist button to define the area graphically.
These parameters are available if Grid Definition Mode is set to Lambert Conformal or Lambert Azimuthal Equal Area. The names follow the naming convention in the descriptions of these projections here:
If the input files are spectral, the following parameters are used to fine-tune the conversion to grid points.
Describes how to treat the incoming spherical harmonics before the transformation to grid points. For more details, see truncation - keyword in MARS/Dissemination request. Possible values are Automatic, None or a number describing the spectral truncation to be applied.
Describes the intermediate grid to which the transform is performed. For more details, see intgrid - keyword in MARS/Dissemination request. Possible values are Automatic , None , Source or the name of the desired intermediate grid.