[MITgcm-support] Frictional heating in the ocean model

[Martin Losch]

Hi Fangze,

I have never used addFrictionHeating, but I have the impression that the field “frictionHeating” is never computed for the oceanic case, i.e. it is always zeros. I cannot find any code to compute frictional heating for the ocean. Feel free to add this missing physics in analogy to atm_phys_tendency_apply* or similar.

Martin

> On 20. Oct 2020, at 16:28, Zhu, Fangze <fzhu at albany.edu> wrote:
> 
> Hi everyone,
>  
> Does anyone know how to calculate the frictional heating due to dissipation of kinetic energy in the ocean model? I believe the variable name is “HeatDiss” and I have already included this variable in the data.diagnostics file.
>  
> I have made the following modifications to try to turn on the frictional heating in the ocean model:
> 	• [CPP_OPTIONS.h] #define ALLOW_FRICTION_HEATING  (the model has been re-compiled after this modification)
> 	• [data]  addFrictionHeating=.TRUE.,
> 	• [data]  staggerTimeStep=.TRUE.,  (to include FricHeat in the pickup file)
>  
> It turned out that the HeatDiss diagnostics were all zeros. However, this was not the case in the atmospheric model.
>  
> Are there any flags I didn’t turn on? How can I let the model update this variable?
>  
> Thanks in advance!
>  
> Best,
> Fangze
>  
> -------------------------------------------------------------------------
> Fangze Zhu
> Department of Atmospheric & Environmental Sciences
> University at Albany, SUNY
> fzhu at albany.edu
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