[MITgcm-support] rbcs advice

[Jody Klymak]

Hi Dimitris,

Thanks that sounds useful for some of our work, and will be *very* useful for many folks.  Back in the day, we just hard coded this into obcs_calc.F ;-)

However, our "tides" are very baroclinic, and need to be specified in 3-D.  In addition, I need a sponge to (partially) absorb motions that aren't in the model domain.  It'd be great if there were a version of rbcs that only required a halo of data around the open boundaries. 

Thanks,   Jody




On Mar 3, 2014, at  17:17 PM, Dimitris Menemenlis <dmenemenlis at gmail.com> wrote:

> Hi Jody, I don't know if this is useful to you, but I wrote a routine called obcs_add_tides.F
> which allows specification of tidal components at the open boundaries so that you don't
> have to specify huge open boundary velocity files.  The tidal currents can be added
> to lower frequency currents and T/S open boundary conditions.
> If this is an approximation that you can use, there is a usage example here:
> http://mitgcm.org/viewvc/MITgcm/MITgcm_contrib/tides/
> 
> On Mar 3, 2014, at 4:30 PM, Jody Klymak <jklymak at uvic.ca> wrote:
> 
>> My issues are how to deal with rbcs.  Each field in the domain as doubles will be 6 Gb/time step. I'd like to have at least 24 forcings over two tidal cycles (48 would be better), so we are talking about 150-300 Gb files for the relaxTFile etc.  
> 
> 
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