2022 MARBL Dev team meetings

February 8, 2022

MARBL Software Updates

1. Bringing SPECTRA into development
   • Working with Jessica and Gaby to set up settings file instead of relying on user_nl_marbl
   • When a PR has been opened, I'd like to review with Keith (there may be answer-changing mods to discuss; keep as-is, or parameterize to maintain default behavior?)
2. Porting MARBL to CESM 1.3
   • Email from Matt last week

General discussion

1. FEISTY update
   • I've expanded the testing to improve comparisons between matlab and python, and think I've uncovered one more bug
   • A few open PRs; #24 is ready to go, but #25 is still a draft with more work to do
2. Any diagnostic updates to discuss?

MOM Software Updates

1. Nothing to discuss, but Gustavo laid out a solid plan to get KPP nonlocal work onto dev/ncar which will let me merge it back onto the MARBL branch
   • Will continue to test MARBL with MCT driver, but this might also be a good time to verify NUOPC cap is behaving as expected (e.g. run 20 year runs with MCT for comparing to POP, but also run 1 month with NUOPC and make sure MOM is getting all the fields it needs to send to MARBL)

POP Software Updates

1. There is a placeholder for a POP tag for CESM 2.1.4 that fixes an issue in setting some share stream variables in certain compsets

   Bugfix: add additional OCN_TRANSIENT option(s) to prevent improper riv_flux_shr_stream_year_last values
   (Some WACCM SSP runs were done with year 1900 river fluxes rather than year 2000; perhaps other CMIP runs were also affected)

   I have a note to talk to Keith about this during our weekly check-in on Thursday, but it may get pushed back a week or two depending on how we prioritize other work