The interaction between the surface ocean and the winds is a complex functin of the state of the sea (such as wave height and turbulence in the surface layer), wind speed and the movement of the surface and the winds. Because of the complex entanglements empiric, simple relations have been at use. In this paper we explore one aspect of it, the so-called eddy-wind interation. Tremendous effects to be expected. None mean effects found. Less power input => shallower mlds local persistent currents can have a mean effect. EKE there is more EKE in Winter than in Summer. In Summer the upwelling regions which are cooled by the eddies (or rather which have decreased sst in the run including the eddy effect than in the run excluding the eddy effet) are not featuring especially high eke. moreover the two regions differ: one with very low eke and on with average to slightly increased values. WINDS Winds are more persistent in Summer and they, both in the gulf of finland and on the swedish south coast, are upwelling favourable from an "eddy-wind" perspective. SST E result in cooler upwelling areas in S. E result in warmer interior in S. E result on overall cooler surface in W. HEATFLUXES E induce stronger warming in upwelling areas in S. E induce weaker heating of the interior in S. E induce overall stronger heating (or less cooling) in W. MLD (expected) E deepen MLD in upewlling areas in S. (NO!) E shallows MLD in interior in S. (NO!) E shallows MLD overall in W. (YES! preominantly in areas with deep MLDs?) POWER E lead to less power input. EKMAN Effects in Winter are inconclusive (too noisy) Effects in Summer show some structure. (currents more persistent in Summer, or just more eddy kinetic energy?) No real netto effect to be identified. Summer along the coast in winter. In Summer there is always no impact. Conclusion Hypothesis Results: Heatig and cooling effects are more pronounced in regions with increased surface mixed layer depth. Eddy kinetic energy is very low in the region where we find pronounced cooling in summer (Hanoe Bugt) (figure 6 MOMBA) There we find a rather strong persisting westward current. We see E result in shallower MLD in W, this comes along with cooler SSTs in W because there is less water in contact with the atmosphere to be cooled down. The opposite, however, deeperis mechanism does not work for very shallow surface mixed layers E lead to a lower input of momentum and turbulence in the ocean. This effect is most pronounced during times of strong winds such as in Winter because the Bulk formuas are non-linear. Consistently, we find the strongest response in surface mixed layer differences in winter where eddies lead to MLD typically of the order of 1m shallower. SST and Heatflux changes are anti-correlated. Warmer (colder) SSTs result in higher oceanic heat loss (gain). Hence, changes in air-sea heat fluxes do not drive the SST differences (this makes sense and was to be expected).