**Subsections**

#

Conservation Properties on Tracer Physics

The numerical schemes used for tracer subgridscale physics are written such
that the heat and salt contents are conserved (equations in flux form).
Since a flux form is used to compute the temperature and salinity,
the quadratic form of these quantities ( their variance) globally tends to diminish.
As for the advection term, there is conservation of mass only if the Equation Of Seawater is linear.

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Conservation of Tracers

constraint of conservation of tracers:

In fact, this property simply results from the flux form of the operator.

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Dissipation of Tracer Variance

constraint on the dissipation of tracer variance:

Gurvan Madec and the NEMO Team

NEMO European Consortium2017-02-17