Towards RTOFS in ufs-community

[NickSzapiro-NOAA]

Continuing discussion here @sanAkel @raphaeldussin @DeniseWorthen

Out of curiosity, I did want to ask if there was interest for RTOFS and HAFS to share some workflow/scripts. Like
https://github.com/hafs-community/HAFS/blob/develop/scripts/exhafs_ocn_prep.sh
seems to initialize from RTOFS and make gfs_forcings from atmosphere output.

I started a ufs-weather-model branch at:
https://github.com/NickSzapiro-NOAA/ufs-weather-model/tree/marine_datm
with two main features: 1) some example test configurations and 2) a particular CDEPS branch.

The CDEPS branch has a "generic" datamode to directly input any atmospheric variables (prepared offline).
Review at ESCOMP is expected to take a while, as they're busy preparing for CMIP7. But, it may be slower in CDEPS on Ursa (??).
For this, "workflow scripts" would prepare datm input files from ERA5 (or CFORCE update), GFS,...

One goal is a useful test suite (in tests/parm/my_rt.conf) at global 1/4 degree ocean-ice.

A working idea is to base around coupled "GFS"or "SFS" tests that track those configurations. Can get MOM6, CICE6, CMEPS restarts (among other things) from those too.

Then make flavors like

• cpld_woa_sfs initializes MOM6 via the World Ocean Atlas override
• cpld_pcice_sfs prescribes CICE6 to an input ice concentration from different year with slabs of ice (2m thick in Arctic and 1m thick in Antarctic)
• cpld_insert_sic_sfs: TODO Exercise adjust_aice feature already in CICE
  or planning ones for
• datm_era5_s2s TODO : will have data atmosphere - MOM6 - CICE6 instead. Inputs are the ERA5-based data atmosphere forcing files, processed with TODO script
• datm_cplhist_s2s TODO: with data atmosphere too, but the atmospheric forcing is from CMEPS history (of GFS/SFS test)
• datm_gfs_s2s TODO : with data atmosphere too, but the atmospheric forcing is from UFSATM history (of GFS/SFS test)

Hopefully can make some configuration switches and couplings to help build & understand model behavior

[sanAkel]

Continuing discussion here @sanAkel @raphaeldussin @DeniseWorthen

Out of curiosity, I did want to ask if there was interest for RTOFS and HAFS to share some workflow/scripts. Like https://github.com/hafs-community/HAFS/blob/develop/scripts/exhafs_ocn_prep.sh seems to initialize from RTOFS and make gfs_forcings from atmosphere output.

Yes @NickSzapiro-NOAA. Definitely there is not only an interest, but [work](see https://github.com/sanAkel/ufs-ocean/blob/main/scripts/grib_to_nc_mapping.md) ✔️ towards this goal.

Unfortunately that work has not (yet) been pulled into this repo.

[sanAkel]

@NickSzapiro-NOAA Can you please close this issue in favor of a discussion: #146 ?

Thanks!

[NickSzapiro-NOAA]

Oh, nice. I don't see an option to convert to discussion ... please do if you can @sanAkel

[sanAkel]

@NickSzapiro-NOAA ✅