| A suite of medium- to high-resolution models (1/3 to 1/12 degr.) is used to examine the low-frequency variability in the western boundary current system of the North Atlantic,in relation to moored current meter measurements at various latitudes. Use of modelversions differing in various components of the atmospheric forcing allows to rationalizethe spatial and temporal characteristics and the relative roles of different forcing mechanismsat seasonal, interannual and decadal time scales. A particular emphasis of the discussion willbe on the requirements for observation systems aiming at detecting decadal or longer termchanges in the thermohaline circulation against the background noise due to eddy variabilityand wind forced changes in the circulation. |
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