wrf ocean physics

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Jayanti pal
Posts: 64
Joined: Mon Nov 04, 2019 8:29 am

wrf ocean physics

Post by Jayanti pal » Mon Mar 15, 2021 11:10 am

I would like to run with ocean physics option.

if I will set sf_ocean_physics=1 (!d mixed layer)

Will i need to put ocean levels, ocean_z, ocean_t, ocean_s??
How to set mixed layer depth and lapse rate below ocean?
Kindly suggest.

Thanks and Regards

Ming Chen
Posts: 1444
Joined: Mon Apr 23, 2018 9:42 pm

Re: wrf ocean physics

Post by Ming Chen » Mon Mar 15, 2021 8:36 pm

When sf_ocean_physics=1, a simple slab ocean mixing layer module is activated. The mixing layer is 50m depth with the standard lapse rate of temperature specified.
ocean_z, ocean_t, ocean_s are specified only when sf_ocean_physics=2 (PWP). Otherwise you don't need to worry for these options.
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Jayanti pal
Posts: 64
Joined: Mon Nov 04, 2019 8:29 am

Re: wrf ocean physics

Post by Jayanti pal » Tue Mar 16, 2021 5:04 am

Thank you for your reply.
Can I change mixed layer depth and lapse rate?

Ming Chen
Posts: 1444
Joined: Mon Apr 23, 2018 9:42 pm

Re: wrf ocean physics

Post by Ming Chen » Tue Mar 16, 2021 3:20 pm

Hi,
Technically you can change the depth of the mixing layer and the lapse rate. However, please be cautious with the physics behind. The changes you intend to make must bee physically reasonable, I think.
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Jayanti pal
Posts: 64
Joined: Mon Nov 04, 2019 8:29 am

Re: wrf ocean physics

Post by Jayanti pal » Wed Mar 17, 2021 4:40 am

Thank you for your reply and suggestion. While changing any parameter, it should be physically reasonable, But I would like to test.
Also I have not found any option to change depth and lapse rate in namelist. Will I need to change it in model code? If it is, where should I look for?
Thanks
Regards

Jayanti

Ming Chen
Posts: 1444
Joined: Mon Apr 23, 2018 9:42 pm

Re: wrf ocean physics

Post by Ming Chen » Mon Mar 29, 2021 5:27 pm

Please take a look at the code phys/module_sf_oml.F. You may also need to refer to the paper for more information
Pollard, R. T., P. B. Rhines, and R. O. R. Y. Thompson, 1973: The deepening of the wind–mixed layer. Geophys. Fluid. Dyn., 3, 381–404. doi:10.1080/03091927208236105
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