[MITgcm-support] Salinity doesn't change

[Shevchenko, Igor]

Hi Martin,

You are perfectly right! Thank you very much!
I completely forgot salinity is constant everywhere and has no forcing in my configuration.
Now both salinity and temperature are changing!

Best regards,
Igor

________________________________________
From: MITgcm-support <mitgcm-support-bounces at mitgcm.org> on behalf of Martin Losch <Martin.Losch at awi.de>
Sent: 18 October 2019 14:19
To: MITgcm Support
Subject: Re: [MITgcm-support] Salinity doesn't change

Hi Igor,

in you “data”, there is no surface forcing for temperature or salinity (both are commented out).
You have (strong) stratificaton for temperature, but constant salinity (of 10 everywhere)
 tRef=20.,10.,8.,6.,
 sRef=10.,10.,10.,10.,

You wind forcing will lead to some circulation and upwelling of cold water, that’s why you see temperature changes and eventually contribute to density gradients. Your salinity is also fluxed around, but since it is constant, you don’t see it, and it also does not contributing to density gradients.

Try this
 sRef=33.,34.,35.,36.,
or similar, to provide some salinity stratification (and hence variation)

Martin

> On 18. Oct 2019, at 11:44, Shevchenko, Igor <i.shevchenko at imperial.ac.uk> wrote:
>
> Attached is the configuration file used.
>
> ________________________________________
> From: MITgcm-support <mitgcm-support-bounces at mitgcm.org> on behalf of Shevchenko, Igor <i.shevchenko at imperial.ac.uk>
> Sent: 18 October 2019 10:41
> To: mitgcm-support at mitgcm.org
> Subject: [MITgcm-support] Salinity doesn't change
>
> Dear MITgcm Support Team,
>
> I am trying to run MITgcm in a configuration (attached) inherited from tutorial_baroclinic_gyre, but the salinity does not change at all during the simulation, while the temperature does.
> I am fresh water in using MITgcm, and it's very likely I have missed a tiny thing in the configuration file which triggers the equation for salinity.
> Could you, please, help me out to resolve the issue?
>
> Best regards,
> Igor
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