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Create a new Observation Filter icon and rename it to filter_obs_t2m.
| Data | Drop the obs icon here |
| Output | Geographical Points |
| Parameter | 012004 |
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This passes the fieldset speed back to the user interface. Try it by right-clicking on the macro's icon and selecting examine, save or visualise.
Field Interpolation
Metview's GRIB Filter icon has parameters which enable the interpolation of data onto a new grid, or the extraction of a sub-area. This can be useful if you wish to compare two fields which are currently at different resolutions (e.g. from different model runs) - both fields need to be on the same grid before Metview can perform computations between them.
The GRIB icon reduced_gg_320 contains one field which is stored as a reduced Gaussian grid. Visualise the field and apply the grid_1x1 icon (in the solutions folder) to display the locations of the grid points.
Now create a new GRIB Filter icon with these parameters:
| Data | Drop the reduced_gg_320 icon here |
| Grid | 2/2 |
The result will be the same data interpolated onto a 2x2 degree grid. Visualise the result and apply the grid_1x1 icon to confirm the new grid.
Extra Tasks
Computing relative differences
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