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Modifications to ForecastTrajectoryGapFiller#2369

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gavinevans:mobt_783_temporal_interpolation
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Modifications to ForecastTrajectoryGapFiller#2369
gavinevans wants to merge 4 commits into
metoppv:masterfrom
gavinevans:mobt_783_temporal_interpolation

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Related to https://github.com/metoppv/mo-blue-team/issues/783

Description
This PR makes some edits to the ForecastTrajectoryGapFiller, mainly for the aim of being able to interpolate accumulation fields, like instantaneous fields e.g. interpolating a T+3 1 hour precipitation accumulation field, from a fields at T+2 and T+4, without an assumption that the interpolation is actually an attempt to disaggregate an accumulation field e.g. disaggregating a 3 hour precipitation accumulation field into 1 hour precipitation accumulation field.

This PR therefore provides a pathway through the ForecastTrajectoryGapFiller (and TemporalInterpolation) plugins for accumulation field interpolation, modifies bounds handling of the accumulation fields, and converts quite a lot of time-based processing in the ForecastTrajectoryGapFiller to use seconds to consistency with the coordinates being handled.

Testing:

  • Ran tests and they passed OK
  • Added new tests for the new feature(s)

@gavinevans gavinevans force-pushed the mobt_783_temporal_interpolation branch from d4a7391 to 8b2f876 Compare April 28, 2026 14:48
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