281
norm, str e dmfunction, simple coupled model
380
370
360
350
340
330
320
3' 8
308
290
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270
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250
24 0
230
220
210
200
190
1S0
170
160
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140
130
120
110
100
90
80
70
60
50
40
38
~ "
c..;
~ :J
"
v
o 10 20 30 40 50 60 70 80 90 100
I I
0
:J
10 20 30 40 50 60 70 80 90 100
380
370
360
350
340
330
320
310
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290
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250
240
230
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60 .
50
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10
o
Figure 8: Hovmoeller diagram of normalized pressure anomalies in the center of the
subtropical gyre in a multi-century integration with the simple coupled ocean-atmosphere
model. Parameters are: c = 2.6 m/ s , v = 3· 10 3 m 2 / s , ' Y = 0, a = 40. The basin size is
100° in the zonal direction and 50° in the meridional direction. A Gaussian disturbance
in the eastern quarter of the basin was introduced at time t=O.
v denote the Coriolis parameter and its variation with latitude, the speed
of the vertical mode considered and a measure of its degree of forcing, and
the eddy viscosity, respectively. The surface wind stress vector devided by
the reference density is denoted by 'L, but we consider its zonal component