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Allow precomputed net surface flux forcing in ocean's hfds prescribing#1229

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feature/hfds-prescribed-from-net-forcing
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Allow precomputed net surface flux forcing in ocean's hfds prescribing#1229
jpdunc23 wants to merge 2 commits into
mainfrom
feature/hfds-prescribed-from-net-forcing

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@jpdunc23 jpdunc23 commented Jun 5, 2026

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_compute_ocean_net_surface_energy_flux now defaults to taking the atmosphere net surface energy flux (base_flux) from a precomputed "net_surface_energy_flux" forcing field when present, falling back to computing it from the constituent fluxes otherwise. The two are equivalent by construction, but the former allows for dropping many of the individual surface flux terms from the set of input forcings to the network.

The SST-dependent mass heat flux term is still computed from the constituent precipitation and latent heat fluxes, which must remain available in forcing_data.

Changes:

  • symbol (e.g. fme.core.my_function) or script and concise description of changes or added feature

  • Can group multiple related symbols on a single bullet

  • Tests added

  • If dependencies changed, "deps only" image rebuilt and "latest_deps_only_image.txt" file updated

Resolves # (delete if none)

jpdunc23 and others added 2 commits June 5, 2026 12:34
_compute_ocean_net_surface_energy_flux now takes the atmosphere net surface
energy flux (base_flux) from a precomputed net_surface_energy_flux forcing
field when present, falling back to computing it from the constituent fluxes
otherwise. The two are equivalent by construction, but the precomputed path
is needed when the constituents are dropped from the forcing and only the
derived net flux is fed to the network.

The SST-dependent mass heat flux term is still computed from the constituent
precipitation and latent heat fluxes, which must remain available in
forcing_data.

Co-Authored-By: Claude Opus 4.8 <noreply@anthropic.com>
@jpdunc23 jpdunc23 changed the title Allow use of precomputed net surface flux forcing in ocean's hfds prescribing Allow precomputed net surface flux forcing in ocean's hfds prescribing Jun 5, 2026
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