[MITgcm-support] Stratification creating current without forcing (Martin Losch)

[Jean-Michel Campin]

Hi Nadine,

As I understand, the vertical diffusion for salt is ON,
this will affect salinity near the top and bottom of the water column.
With flat bottom, this will not generate horizontal density gradient,
but with non flat bottom the changes will be at different depth for each
column so this will lead to horizontal density gradient and make
the ocean start to move.

Cheers,
Jean-Michel

On Thu, Nov 28, 2019 at 10:42:51AM +0100, Nadine Steiger wrote:
> Hi,
> 
> salinity does not go below or above the initial values.
> 
> When creating the hydrogSaltFile, I precribe the salinity
> everywhere, as I figured that MITgcm masks the topography during
> initialization.
> 
> I tried to prescribe salinity through hydrogSaltFile and through
> sRefFile, but I get the same issue in both cases.
> 
> When I turn off saltStepping and saltAdvection, the ocean stays in rest.
> 
> When I use a flat bottom instead of a channel, the problem does not
> occur either.
> 
> Nadine
> 
> 
> -- 
> Nadine Steiger
> PhD Candidate
> University of Bergen | Geophysical Institute
> Bjerknes Centre for Climate Research
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