[MITgcm-support] ptracer and default boundary conditions

[Daniel Goldberg]

many thanks matt.

going by verification/exp4, this is simply defining (for the western
boundary)

OBWptrFile(1) = [filename]

correct? (I only have one tracer)

thanks
dan

On Fri, Apr 7, 2017 at 8:03 PM, Matthew Mazloff <mmazloff at ucsd.edu> wrote:

> I believe default is Neumann boundary conditions. To get what you want you
> need Dirichlet, so you need to prescribe an open boundary file with values
> all 0
>
> -Matt
>
>
>
>
> On Apr 7, 2017, at 11:32 AM, Daniel Goldberg <dngoldberg at gmail.com> wrote:
>
> Hello All
>
> It's my first time using ptracers. In my setup I am using OBCS at all
> boundaries, specifying U and V (inflow in some places, out in others). I am
> not using Orlanski or Stevens bc's. I want the tracer to simply be advected
> out with the outgoing flow, and incoming flow to have zero tracer
> concentration, and I have not defined any boundary files for ptracers in
> data.obcs.
>
> My assumption is that by default I will get this (simple outflow, no
> inflow), but the online ptracer documentation does not explicitly say this,
> so I would just like to make sure.
>
> Thanks very much!
> Dan
>
> --
>
> Daniel Goldberg, PhD
> Lecturer in Glaciology
> School of Geosciences, University of Edinburgh
> Geography Building, Drummond Street, Edinburgh EH8 9XP
>
>
> em: D <dgoldber at mit.edu>an.Goldberg at ed.ac.uk
> web: http://ocean.mit.edu/~dgoldberg
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-- 

Daniel Goldberg, PhD
Lecturer in Glaciology
School of Geosciences, University of Edinburgh
Geography Building, Drummond Street, Edinburgh EH8 9XP


em: D <dgoldber at mit.edu>an.Goldberg at ed.ac.uk
web: http://ocean.mit.edu/~dgoldberg
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