[MITgcm-support] SST relaxation with temporal variability

[Martin Losch]

Hi Takaya,

`externForcingCycle` and `externForcingPeriod` are used for all forcing data that is specified in the namelist file “data”. That makes this way of reading and applying forcing data very unflexible.

You could use the rbcs package for surface restoring, although I would not recommend it as it’s a bit of an overkill. rbcs can be used for 3D restoring and involves a lot of extra storage.

The recommended surface forcing package is the exf-package. There you have different forcing periods etc for each forcing field, including surface restoring. The exf-package is more involved in terms of configuration, but in the long run it pays off to use it.

Martin

> On 20. Mar 2018, at 20:28, Uchida Takaya <tu2140 at columbia.edu> wrote:
> 
> Dear MITgcm support,
> 
> 
> I am trying to include sea-surface temperature (SST) relaxation with temporal variability.
>  
> I found the documentation for which parameters to change for temporally varying wind stress (http://mitgcm.org/public/r2_manual/latest/online_documents/node104.html) but the `externForcingCycle` and `externForcingPeriod` parameters seem only to be incorporated into the momentum equation.
> Do the parameters also apply to the SST forcing prescribed by `thetaClimFile` in the `data` name file or would I need to use the `rbcs` package by prescribing `rbcsForcingPeriod`, `rbcsForcingCycle` and `tauRelaxT`?
> In the latter case, should I simply comment out `tauThetaClimRelax` and `thetaClimFile` in the `data` name file?
> 
> Any clarification on this would be helpful. Thank you very much for your support in advance.
> 
> 
> Best,
> Takaya
> ———————
> PhD Candidate
> Physical Oceanography
> Columbia University in the City of New York
> https://roxyboy.github.io/
> 
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