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3.8 Barotropic Ocean Gyre In Cartesian Coordinates
This example experiment demonstrates using the MITgcm to simulate
a Barotropic, wind-forced, ocean gyre circulation. The experiment
is a numerical rendition of the gyre circulation problem similar
to the problems described analytically by Stommel in 1966
[49] and numerically in Holland et. al [31].
In this experiment the model
is configured to represent a rectangular enclosed box of fluid,
km in lateral extent. The fluid is km deep and is forced
by a constant in time zonal wind stress, , that varies sinusoidally
in the ``north-south'' direction. Topologically the grid is Cartesian and
the coriolis parameter is defined according to a mid-latitude beta-plane
equation
|
(3.1) |
where is the distance along the ``north-south'' axis of the
simulated domain. For this experiment is set to
in
(3.1) and
.
The sinusoidal wind-stress variations are defined according to
|
(3.2) |
where is the lateral domain extent ( km) and
is set to
.
Figure 3.1
summarizes the configuration simulated.
Figure 3.1:
Schematic of simulation domain and wind-stress forcing function
for barotropic gyre numerical experiment. The domain is enclosed bu solid
walls at 0,1200km and at 0,1200km.
|
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