[MITgcm-support] Setting Fixed Top and Bottom Temperature BC's

[Christopher Pitt Wolfe]

Hi Benjamin:

“Fixed" temperature boundary conditions are actually implemented as fast relaxation to a target surface temperature distribution. Setting the relaxation time scale the same as the model time step will have the effect of fixing the temperature in the upper layer. You can generalize this to other boundaries using the RBCS package: Just set the your target temperature in the vertical layer just above the bottom and setting the relaxation timescale equal to the time step will give you a fixed temperature bottom boundary condition.

Cheers,
Christopher

> On Sep 16, 2015, at 12:33 PM, Benjamin Ocampo <rurik at ualberta.ca> wrote:
> 
> Hi All:
> 
> I currently running the /verification/rotating_tank example and for this example, 
> I wish to modify it by removing the temperature boundary conditions at r_inner 
> and r_outer and setting them at the top and bottom 
> (say T(z=0) = 40C and T(z=29) = 10C).
> 
> Is it possible for this case? Is it also possible to set top and boundary 
> temperature conditions at any coordinate system?
> 
> Cheers,
> Benjamin
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