Add "ultra low" coupled configurations to RTs

[DeniseWorthen]

Commit Queue Requirements:

• Fill out all sections of this template.
• All sub component pull requests have been reviewed by their code managers.
• Run the full Intel+GNU RT suite (compared to current baselines) on either Hera/Derecho/Hercules
• Commit 'test_changes.list' from previous step

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Description:

Add two new low resolution S2S coupled configurations: C12 ATM + 9deg OCN/ICE and C24 ATM + 5deg OCN/ICE. Warmstarts for C12mx900 and C24mx500 were generated at 31b1938 from the control tests for each resolution and added to the staged input data directory on hera.

New input is located /scratch1/NCEPDEV/stmp4/Denise.Worthen/input-data-20250131 and must be sync'd to all platforms. The date on the input data directory is arbitrary.

Both C24-5deg and C12-9deg utilize 11 tasks. Both control tests (24hrs) run on Hera in less than ~ 1 minute. A baseline was created and verified at 36babd5.

Commit Message:

* UFSWM - add control, warmstart and restart-from-warmstart tests for C24 + 5deg Ocean/Ice and C12 + 9deg Ocean/Ice
  * FV3 - add new SDF for low-res physics

Priority:

• Normal

Git Tracking

UFSWM:

• Closes Ultra low resolution configuration for testing #2508

Sub component Pull Requests:

• FV3: Add SDF for ultra-low (C12 and C24) coupled configurations NOAA-EMC/fv3atm#911

UFSWM Blocking Dependencies:

• None

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Changes

Regression Test Changes (Please commit test_changes.list):

• PR Adds New Tests/Baselines.

Input data Changes:

• Updated input data.

Updated input-data directory currently staged on Hera at

/scratch1/NCEPDEV/stmp4/Denise.Worthen/input-data-20250131

Library Changes/Upgrades:

• No Updates

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Testing Log:

• RDHPCS
  • Hera
  • Orion
  • Hercules
  • Jet
  • GaeaC5
  • GaeaC6
  • Derecho
• WCOSS2
  • Dogwood/Cactus
  • Acorn
• CI
• opnReqTest (complete task if unnecessary)

[LarissaReames-NOAA]

Spoke with @JessicaMeixner-NOAA at the GW meeting today and she asked if we're using waves in these tests. Did we have a reason for not including waves? I know they're not really doing anything at these resolutions, scientifically, but if we want to test the plumbing ... I suppose we could ask the same question about chemistry?

[DeniseWorthen]

@LarissaReames-NOAA No specific reason, no. I was following the current c48-5degs for the lower resolutions and that original C48-5deg does not include waves.

[LarissaReames-NOAA]

Yeah, understood, that makes sense. Could we give those components a try? If we're going for a plumbing test here, it makes sense that we should include those components.

[DeniseWorthen]

@JessicaMeixner-NOAA I see your comment where to find the 9-deg WW3 files. Do you have similar files available for 5-deg? We're adding a C24-5deg and we could, if desired, update the existing C48-5deg to include waves.

[JessicaMeixner-NOAA]

I only created a 9km. Can we just use that for both tests for now? I wont have time to create a 5km for a while.

[DeniseWorthen]

@JessicaMeixner-NOAA 9km? You mean 9deg I hope ;-)

We're adding C24-5deg and C12-9deg. Are you suggesting using 9-deg WW3 for both? So that it is C24-5deg Ocn/Ice + 9 deg WW3?

[JessicaMeixner-NOAA]

Yes, I do mean 9 degrees :)

Yes, for now I'm thinking 9 degree for both, but I can make a 5 degree, I just know I can't do it today and I don't want to make promises about when. I figure this way, we're at least getting the technical aspects of it in.

[DeniseWorthen]

OK, I'll also try to test w/ adding, but I'm also not sure about my own timeline.