1.2.3. Global ocean circulation

Figure 1.7 shows the pattern of ocean currents at the surface of a 4° global ocean model run with 15 vertical levels. Lopped cells are used to represent topography on a regular lat-lon grid extending from 70°N to 70°S. The model is driven using monthly-mean winds with mixed boundary conditions on temperature and salinity at the surface. The transfer properties of ocean eddies, convection and mixing is parameterized in this model.

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Figure 1.7 Pattern of surface ocean currents from a global integration of the model at 4° horizontal resolution and with 15 vertical levels.

Figure 1.8 shows the meridional overturning circulation of the global ocean in Sverdrups.

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Figure 1.8 Meridional overturning stream function (in Sverdrups) from a global integration of the model at 4° horizontal resolution and with 15 vertical levels.