Re: {Disarmed} [gotm-model/cases] How do I call the kc04 scheme in the new version？ (Issue #5)

[Lars Umlauf]

Dear Darry,

The parameterization of Langmuir turbulence in CVMix is not related in any way to KC04. CVMix is based on the KPP turbulence model, whereas KC04 is based on the second-moment turbulence modeling framework. You will therefore not find a trace of KC04 in CVMix.

KC04 is not yet implemented in the public version of GOTM on github. We are working on this at the moment, and should have this ready in a couple of weeks, hopefully.

CVMix is already coupled to GOTM, and should run (although we haven't tested this in a long time). It also includes an option for Langmuir turbulence. We will also check this configuration carefully within the next couple of weeks - at the moment we can't guarantee that everything is fully functional. GOTM is at the moment in a phase of refurbishment and transition. So if you're not in a hurry, I suggest to wait until everything is ready.

In either case, please make sure to update both gotm-cases and gotm-code on a daily basis from github. We are working hard on GOTM at the moment, and the software is likely to change quickly.

Best regards,

Lars

p.s. It is better to use the gotm-users list for this type of conversations (now in CC).

On 1/16/2024 16:01, DarryTJU wrote:

Dear developer:
I am really glad that you introduced the new version when I needed to use the KC04 Langmuir turbulence parameterize scheme. However, when I tried to use it in case(ows_papa) in 'gotm.yaml', I could not find the interface to call the KC04 scheme in CVMix. There is a only option in CVMix is 'kpp'. I am really confused about how to call KC04, thank you very much!

darry xiu
01/16/2024
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Lars Umlauf

Physical Oceanography and Instrumentation
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[darryxiu]

Dear Umlauf,

I checked the gotm code on GitHub and noticed some modifications. In version 7, Euler-Stokes cross shear production was added to both meanflow folder and turbulence folder. I wonder if these changes count as adding kc04 to gotm.

Here is the code page in GitHub: https://github.com/gotm-model/code.git

I sincerely appreciated for your response.

Darry Xiu
01/17/2024

---- Replied Message ----

From	Lars Umlauf<lars....@io-warnemuende.de>
Date	01/17/2024 00:24
To	reply+AEVOCRMXVU66F4DKOP...@reply.github.com<reply+aevocrmxvu66f4dkop...@reply.github.com>, gotm-...@googlegroups.com<gotm-...@googlegroups.com>
Subject	[gotm-users:2824] Re: {Disarmed} [gotm-model/cases] How do I call the kc04 scheme in the new version？ (Issue #5)

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[Knut]

hi darry,

exactly. see https://github.com/gotm-model/code/commit/705216694dbc43cee2ea58c4b9a131a7a13f5efd for details.

cheers, knut

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[Lars Umlauf]

Dear Darry,

The KC04 code we have in GOTM at the moment is very preliminary. It is not well tested, undocumented, and we don't yet have a tailored test scenario for it. Please be sure you know what you're doing when trying to work with this. 

We hope to come up with a more comprehensive implementation of LT in GOTM soon. 

Best wishes, 

Lars

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