156
z/d
-1.5
Vertical Structure: Baroclinic Quasi-Geostrophic Models
-2.0~----------------=1
a -2.5 '------~---'--------'--_j_--'------'-----'---'--'--_j
0
-0.5
-1.0
z/d
-1.5
0
0.2
0.4
0.6
density in y-z plane at x=.2
++
++
+
+ +
0.8
y/L
+
++
+
+ +
-2.0
b -2.5 0
+
0.2
0.4
0.6
0.8
isopycnals in x,z plane x/xe
1.0
;._,_-------:
--1
- f
.t
++
++
1.0
Fig. 3.10.6a,b. Isopycnal surfaces for the parameter choice, (JL/ fo = 0.3. a A meridional section of
the total density. b Zonal section. Plus signs, boundary of the pool. Note that the density surfaces
are flat outside and below the pool
layer whose depth has shrunk locally to zero. On the northern boundary of the
gyre no such singularity occurs as long as W£ goes to zero as rapidly as 1 - y.
It is important that the continuous model provides qualitatively the same
solution as the layer models. This gives us confidence that the generally more
tractable layer models are able to capture the basic physical processes of the
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