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Next: 6.3.3 Griffies Skew Flux
Up: 6.3 Gent/McWiliams/Redi SGS Eddy
Previous: 6.3.1 Redi scheme: Isopycnal
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The GM parameterization aims to parameterise the ``advective'' or
``transport'' effect of geostrophic eddies by means of a ``bolus''
velocity, . The divergence of this advective flux is added
to the tracer tendency equation (on the rhs):
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(6.4) |
The bolus velocity is defined as:
where and are stream-functions with boundary conditions
on upper and lower boundaries. The virtue of casting the
bolus velocity in terms of these stream-functions is that they are
automatically non-divergent (
). and
are specified in terms of the isoneutral slopes and :
This is the form of the GM parameterization as applied by Donabasaglu,
1997, in MOM versions 1 and 2.
Next: 6.3.3 Griffies Skew Flux
Up: 6.3 Gent/McWiliams/Redi SGS Eddy
Previous: 6.3.1 Redi scheme: Isopycnal
Contents
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