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@pmaciel pmaciel commented Dec 19, 2025

Description

Intermediate interpolation exists to support unstructured grids which have only a restricted set of available interpolation methods. This options allows to pre-interpolate to a structured grid beforehand and following with the original intended method, similar to what we already do to input spectral fields. There is a grwoing number of grids in this situation (ORCA, FESOM, ICON, YY, ...) It is intended for advanced usage.

This feature exists since mir 1.24 (2025-01). On deployment use the latest version on main/master (currently 1.27.10).

Contributor Declaration

By opening this pull request, I affirm the following:

  • All authors agree to the Contributor License Agreement.
  • The code follows the project's coding standards.
  • I have performed self-review and added comments where needed.
  • I have added or updated tests to verify that my changes are effective and functional.
  • I have run all existing tests and confirmed they pass.

Add missing option

Co-authored-by: Olivier Iffrig-Petit <olivier.iffrig@ecmwf.int>
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Looks good to me, thanks! Happy for you to merge when you're ready (or tell if you want us to do it)

@pmaciel
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pmaciel commented Jan 5, 2026

Thanks! Please merge -- would a deployment be far off into the future? I'm lookng for the feature to be availble withing a few weeks (let me know!)

@oiffrig oiffrig merged commit 162e8c8 into develop Jan 5, 2026
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@oiffrig oiffrig deleted the feature/intermediate-interpolation branch January 5, 2026 10:56
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4 participants