NCAR
DART+CESM B Compset Staging Scripts
In order to conduct coupled data assimilation experiments, @amrhein plans to use a CESM B compset configured as follows:
- CAM6 atmosphere; CICE sea ice; POP2 ocean
- data assimilation enabled for the ocean component only
- f09 atmosphere grid; g17 ocean/sea ice grid
- Initial conditions for the atmosphere provided by the CAM6 Reanalysis
- Initial conditions for the ocean provided by Who Kim's JRA-55 normal year integration,
/glade/campaign/cgd/oce/people/whokim/csm/g210.G_JRA.v14.gx1v7.01
I plan to assist in this effort by adapting the models/POP/shell_scripts/cesm2_1/CESM2_1_setup_hybrid script to build a CESM B compset case.
Two questions:
- Is this a reasonable plan of work?
- If so, in which subdirectory in the repository should I be creating these scripts? Since it's a B compset with DA enabled in POP, I'm not sure if these scripts should be created in
models/POPormodels/CESM.
If the intention is to develop (these) scripts to do coupled assimilation, I vote for doing it in CESM, which was created for that purpose. Even if it starts with assimilating only in POP, it would be worthwhile to make them general enough to do the multi-component assimilation ("weakly coupled"). I'm guessing that the cross-component ("strongly coupled") scripting will be independent, since our design philosophy is to not try to handle many configurations in one script.
Kevin, that seems like a good approach. It would be nice to treat the single-component-DA coupled assimilation as a special case of the weakly coupled setup as long as that doesn't fall foul of that philosophy.
Dan Amrhein Climate and Global Dynamics Laboratory Computational and Information Systems Laboratory National Center for Atmospheric Research amrhein.github.io he / him / his
On Thu, Jan 21, 2021 at 9:51 AM kdraeder [email protected] wrote:
Also see models/CESM/shell_scripts/CESM1_2_1_setup_hybrid.
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Branch for this work is here: https://github.com/NCAR/DART/tree/create_CESM_B_compset_setup_scripts
moved branch July 2023: https://github.com/hkershaw-brown/DART/tree/create_CESM_B_compset_setup_scripts
