At North Hemisphere, main superficial currents turn clock-wise, because of Coriolis Effect.

I would expect on Mediterranean Sea to have currents turning in the same sense, but, surrounding landmasses, this picture shows a counter-clockwise sense of rotation.

enter image description here

Source: researchgate.net

Why so?

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    $\begingroup$ here is a "live map" of the area earth.nullschool.net/#current/ocean/surface/currents/… $\endgroup$ Mar 28 '19 at 17:06
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    $\begingroup$ @trond hansen nice map. with a more detail I see how the Stratit of Gibraltar's current is partialy forced by Coriolis to go throw the North. But I still see counter-clockwise currents when they are paralel to the coastline. $\endgroup$
    – user12525
    Mar 28 '19 at 18:05
  • $\begingroup$ i wonder if this might have something to do with colder atlantic water entering the mediterranian and the elevated salinity in the area. $\endgroup$ Mar 28 '19 at 19:42
  • $\begingroup$ You have to distinguish between general circulation and eddies. You clearly have both cyclonic and anticyclonic eddies in the Mediterranean. In terms of general circulation, the main effects are wind-driven and baroclinic flows. In the Mediterranean the dominating factor is baroclinicity with denser waters in the center of the basins that forces a general anticyclonic flow. tornado.sfsu.edu/geosciences/classes/m407_707/Monteverdi/… & tandfonline.com/doi/pdf/10.1080/1755876X.2010.11020116 $\endgroup$
    – arkaia
    Mar 29 '19 at 2:27
  • $\begingroup$ @arkaia What about the effect of centrifugal force on mesoscale eddies ? $\endgroup$
    – gansub
    Mar 29 '19 at 3:07

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