[MITgcm-support] Hydrostatic pressure in LLC runs

[Dimitris Menemenlis]

One example is here: https://github.com/MITgcm-contrib/llc_hires/tree/master/llc_4320/regions/Box56/2k_88l
The extraction was carried out using: https://github.com/MITgcm-contrib/llc_hires/blob/master/llc_4320/regions/Box56/matlab/ExtractFields.m
and the binary files needed to run the code were generated using: https://github.com/MITgcm-contrib/llc_hires/blob/master/llc_4320/regions/Box56/matlab/mk_run_template.m
There is some hard-coded directories in above scripts that will need to be changed.

Which tile are you working with?

Let me know if you have questions or need help setting up the regional simulation.

Cheers, Dimitris


> On Nov 27, 2024, at 5:17 PM, Xiaozhou Ruan <saberruan at hotmail.com> wrote:
> 
> Thank you for your replies, Jean-Michel and Dimitris. Dimitris, I’m doing the diagnostics in only one of the tiles and it would be great if you could share the examples of running the cutouts!
> 
> Best,
> Xiaozhou
> 
>> On Oct 30, 2024, at 7:36 PM, Xiaozhou Ruan <saberruan at hotmail.com <mailto:saberruan at hotmail.com>> wrote:
>> 
>> Dear MITgcm users,
>> 
>> I have been working on closing the momentum budget in LLC4320. Since I couldn’t locate the pressure output, I opted to calculate the hydrostatic pressure myself. I first used the densjmd95 routine to compute the in-situ density, then vertically integrated the density (multiplied by g) from the sea surface downward. However, the momentum budget doesn’t quite close. The pressure gradient field is very noisy, with many depth-invariant vertical stripes. Has anyone had experience closing the momentum budget with self-calculated hydrostatic pressure, or might be able to suggest any steps I may have missed in the pressure calculation? Thank you very much!
>> 
>> Best,
>> Xiaozhou
>> 
>> --
>> Xiaozhou Ruan 
>> “shaw-joe roo-ahn”
>> Assistant Professor
>> Department of Earth & Environment
>> Boston University
>> web:   https://xiaozhour.github.io/
>>  
> 
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