[MITgcm-support] Behavior of Ptracers at Orlanski boundary

[Yilang Xu]

Hi everyone, 

 

As MITgcm suggests, the implementation of Orlanski OBCS and Ptracers together is not recommended by the current version of the code. Following some previous discussions

(e.g., http://mailman.mitgcm.org/pipermail/mitgcm-support/2012-October/008012.html), I comment out the part that stops the model in obcs_calc.F and obcs_check.F. 

 

As a result, the model behaves well until the ptracer reaches the Orlanski boundary. I notice the occurrence of instability or aggregation of ptracer when it comes near boundary cells. 

I wonder if there is any solution to this problem. Appreciate your help. 

 

Thanks,

Yilang

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