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Field Interpolation and Sub-area Extraction
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 of data. 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.
Field Interpolation
Visualise the U wind field (via the GRIB Filter icon you created earlier) and apply the supplied gridpoints icon to display the locations of the grid points - they are on a regular 1.5 degree grid.
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Sub-area Extraction from a Fieldset
The GRIB Filter icon also allows the extraction of a sub-area from a fieldset. Create a new one and, using the Area parameter, extract just the data over a selected region for any of the supplied GRIB files. The area is defined as a list of 4 numbers, forward slash-delimited, representing the North/West/South/East coordinates of the area.
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