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Describes how to treat the incoming SH, before the transformation to grid points.
truncation=<value> |
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For other keywords controlling the interpolation see the diagram below.
Possible values are
Value | Description |
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NONE | Disables any truncation before the transformation |
AUTO | Truncation is derived from the intermediate grid. This is the default behaviour |
number | Specific truncation to be applied, e.g. TRUNCATION=179 truncates the Spectral harmonics input SH field to T179. |
OFF | reserved MARS value that resets the value inherited, effectively removing the keyword from the request which results in AUTO being applied. |
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