Setting up MOM5-SIS forced with JRA55-do

[rfarneti]

Hi All,

I am in the process of preparing a MOM5 ocean-sea ice experiment forced with JRA55-do.
I have downloaded the latest JRA55 forcing fields.

I was wondering if:

1/ You preprocess in any way the JRA fields before feeding them to MOM.

2/ How do you interpolate friver, licalvf and the SSS restoring field onto your grid?

I had a quick look at /tools and you seem to rely on local software. Do you have any advice on how to do a proper interpolation/regridding?

3/ Any other advice when setting up a forced run with JRA55-do?

Thanks for any help and sorry if I missed something.

Best,
Riccardo

[AndyHoggANU]

Hi Riccardo,
We don't pre-process JRA55-do -- that is all done on the fly in libaccess-om2 and OASIS, including shifting runoff onto the ocean points where needed.
Easiest path here might be for you to use the whole ACCESS-OM2 model, if you can find a way to compile on your system?

[rfarneti]

Hi Andy,
thanks. Switching to ACCESS-OM2 might be easier indeed ...

[aekiss]

Hi Riccardo, there are instructions for building ACCESS-OM2 here. If you can get it to compile and you want to use our configurations we'll also need to supply you with our input files.

[rmholmes]

@rfarneti did you get this working? It would be great to hear about your experience.

[rfarneti]

Hi @aekiss and @rmholmes,
I will switch to ACCESS-OM2 soon, I think, but for the time being I managed to start running MOM5-SIS with JRA55-do forcing. I relied heavily on A. Adcroft routines for properly regridding and interpolating SSS, friver and licalvf.
I have done a few tests and I have just started to produce full cycles.
I tend to forget how I did things, so I wrote some notes on the necessary steps to preprocess JRA55-do forcing (attached).
Cheers!
MOM_JRA55do.pdf

[StephenGriffies]

@rfarneti would you be ok if I posted your document to this MOM webpage

https://mom-ocean.github.io/docs/

[rfarneti]

of course!

[StephenGriffies]

Thanks!

Now I need to figure out how to get the webpage regenerated with a link to your new document... That is hopefully something @aidanheerdegen can help me with.

[rfarneti]

Hi,
I found out I had a problem in the SIS &ice_model namelist: add_diurnal_sw should be set to .false. when using JRA55-do forcing.
@StephenGriffies or @aidanheerdegen : could you please update the document in https://mom-ocean.github.io/docs/ with the one attached?

Thanks,
Riccardo
MOM5_JRA55do.pdf

[StephenGriffies]

hi @rfarneti thanks for the updated documentation. I replaced your old version with this new one.

I vaguely recall the diurnal issue, and sorry not to have suggested it earlier. It is good to have this documented now. Many thanks!

[rfarneti]

It took me a while to spot it, but I had a good run through the code ... which is always a good exercise.