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Add GEOS-MLT FV3 interface and upper atmosphere diagnostics - #423
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Andrew-won-Lee wants to merge 8 commits into
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Andrew-won-Lee wants to merge 8 commits into
Andrew-won-Lee wants to merge 8 commits into
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added 7 commits
June 25, 2026 09:59
Initialize the dynamics-side MSIS wrapper during FV3 setup and pass the correct UT seconds since midnight from the ESMF clock. Cache F10.7, F10.7A, and Ap once per model hour to avoid repeatedly searching the space-weather table at every grid point and level. Continue evaluating MSIS independently at each requested location and altitude. Require exact hourly index records and stop when the forcing table is unavailable or does not cover the current model time.
Pass the dynamics timestep and simplified GEOS-MLT molecular momentum diffusion controls through the FV3 interface. Remove the obsolete diagnostic, vertical-index, scaling, and viscosity-limit controls while retaining the enable, heating, Prandtl-number, and pressure cutoff options.
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Summary
This PR merges the FV3 interface updates required for GEOS-MLT into the
GEOS-11_7_2-MLT-0_0_1integration branch.The changes connect the FVdycore wrapper to the GEOS-MLT upper atmosphere extensions implemented in the corresponding GFDL FV3 development branch.
Changes
delz) for GEOS-MLT hydrostatic configurations.Dependency
These interface changes are intended to be used with the corresponding GEOS-MLT changes in
GFDL_atmos_cubed_sphere.The target integration branch is based on FVdycoreCubed_GridComp v2.14.1 used by GEOSgcm v11.7.2.