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Roger Proctor¹
S.L. Wakelin ¹and J.T. Holt ¹

(1) Proudman Oceanographic Laboratory, Liverpool, UK

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Data from two large scale operational ocean models are used to give initial and open boundary conditions for a northeast Atlantic implementation of the Proudman Oceanographic Laboratory Coastal Ocean Model System (POLCOMS). We study the effects of using the different datasets on the temperature fields and the circulation. The boundary and initial data are from the Forecasting Ocean Assimilation Model (FOAM, UK Met. Office) and the Navy Coastal Ocean Model (NCOM, US Naval Research Laboratory).
On the continental shelf, comparisons of POLCOMS output with AVHRR sea surface temperature data suggest that the effect of using different boundary conditions is small and that, after 15 months of model time, the effect of using different initial conditions is negligible. When the deeper regions of the domain are included, the influence of the boundary data on the SST becomes more evident. Volume fluxes through sections governing flow into and out of the North Sea, through the Irish Sea and along the shelf edge show that the impact of the different boundary conditions is small on the shelf but significant elsewhere.

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