Include surface ocean current in the computation of air-sea fluxes #311
Conversation
Change the variable name for meridional ocean current from ssv to vsfco.
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Hi, @binli2337 . I take it this is to be able to transmit the surface currents between the parent and nested grids, something that the physics itself does not support? Is this capability needed for other variables as well? Thanks, |
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@lharris4 Sea surface temperature (tsfco) also needs to be transferred from parent grid to nested grid. SST was already been transferred from parent to nested gird before this PR. |
@lharris4, you are right. The transit of coupling variables (SST, Sea Surface Current) between the parent and nested grids currently relies on the FV3dycore and FMS capabilities. It cannot be done in the physics side currently. As @binli2337 mentioned, this has been previously implemented for SST and sea surface roughness variables. And in this PR, we are trying to add the SSC u/v components. Meanwhile, you might recall the ongoing PR #272 from @dkokron, which should help to speed up the parent to nest transition process. Thanks! |
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I think this is OK given that it extends a previously defined capability used for operations. However I really think this is something the flux coupler needs to handle, by transmitting surface ocean conditions (SST, SSH, Us, Vs, roughness length, etc.) to the appropriate domain, nested or not.
I would appreciate if you would open an issue within the coupling library.
Thanks,
Lucas
model/fv_arrays.F90
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| real, _ALLOCATABLE :: usfco(:,:) _NULL !< sea surface current (zonal) from NCEP/GFS (m s-1) -- tile | ||
| real, _ALLOCATABLE :: vsfco(:,:) _NULL !< sea surface current (meridional) from NCEP/GFS (m s-1) -- tile |
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Are these necessary? I don't see them being used in your feature branch.
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@bensonr The variables usfco and vsfco are used in the updated surface layer scheme in ccpp-physics. The updated surface layer scheme is used in both parent and nested grids,
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@bensonr I think this is a good catch. The two lines of defining usfco/vsfco are not needed here inside the FV3dycore. The two variables are needed in the FV3ATM level though (including inside the moving_nest dir). @binli2337 is currently double checking and testing, will reply to this thread once he confirms. Thanks!
Thanks, @lharris4! And agreed. We already have an issue created under ufs-weather-model (ufs-community/ufs-weather-model/issues/1884) regarding establish/optimize the capability of coupling both FV3ATM parent domain and static/moving nest domain with other earth modeling components. Thanks! |
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Hi, Bin. Thanks for opening this issue.
Lucas
…On Tue, Jan 23, 2024 at 12:01 PM Bin Liu ***@***.***> wrote:
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Changes look good to me.
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Testing is complete on ufs-wm 2104. @bensonr would you be able to merge this PR for us please? |
Description
Update surface layer scheme to include surface ocean current in the computation of air sea fluxes.
Transfer surface ocean current field to nested grids.
Fixes #312
How Has This Been Tested?
The updated code has been tested successfully in the HAFS-MOM6 application.
Checklist:
Please check all whether they apply or not
Co-authored-by @binli2337 ,@BinLiu-NOAA, @WeiguoWang-NOAA, @BijuThomas-NOAA, @hyunsookkim-NOAA, @XuLi-NOAA, @MariaAristizabal-NOAA, @JohnSteffen-NOAA