[MITgcm-support] OBCS Tracer Errors

[Martin Losch]

Hi Senja,

undershoots can be reduced by flux limited advection schemes, e.g. 33, see documentation.

Martin

> On 25. Jan 2019, at 00:15, Senja Walberg <senja.w at gmail.com> wrote:
> 
> Thanks Martin, I didn't think to include my files but I believe I fixed the main issue after looking at exp4. Making boundary condition files (OBNptrFile(1) and so on) for the tracers fixed the main problem of exploding tracer magnitudes. I still get negative tracer concentrations developing, specifically in areas where there's considerable activity in the fluid, which tends to be accompanied by anomalously high tracer concentrations as well. I believe this might be a problem with my diffusion parameters, or possibly just numerical errors, so I'm tuning things to try and dampen this effect as much as possible. 
> Thanks again. 
> Senja
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