Olympic Region Harmful Algal Bloom Project


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Offshore transects

Numerical Modeling



Numerical Modeling

A diagnostic, numerical model has been used to look at the circulation in 1998 a year of a large toxic event on the Washington coast. Below are shown drifter tracks in the region of the Juan de Fuca eddy derived from the model using observed density field data for 1998 (MacFadyen, Foreman, Hickey, unpub. data). Triangles show positions at which drifters were released in the modeled velocity field. ARGOS positions of two ocean drifters deployed in Sept 2001 are also shown by the blue circles. Solid circles indicate daily intervals. The two cases show model results both with and without a northward (‘storm’) wind.