Introduce tuning parameter for convective cloud liquid for GFSv17/GEFSv13/SFSv1#1002
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FernandoAndrade-NOAA merged 9 commits intoSep 10, 2025
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@FernandoAndrade-NOAA ufs-community/ccpp-physics#308 was merged. This is ready to revert .gitmodules and update ccpp/physics submodule commit pointer. |
jkbk2004
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Sep 10, 2025
BrianCurtis-NOAA
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Sep 10, 2025
This was referenced Sep 17, 2025
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Description
The interaction between convective clouds and radiation is degraded in later prototypes of GFSv17 (C1152) and GEFSv13 (C384) due to a scaling of convective cloud liquid in saSAS passed to radiation. For SFSv1 (C192-C96) the scaling is necessary to prevent a major cold bias in SST. Because of the sensitivity to application/resolution, and the large impact the convective cloud liquid has on the surface energy balance/MJO prediction/and SST bias we here propose to include it instead as a tunable paramter. This replaces the current scaling by updraft area fraction.
Issue(s) addressed
Testing
Retrospective GFSv17, GEFSv12 and SFSv1 runs.
Technical tests on Hera - all regression tests
Dependencies