I know it has to do with to Coriolis force and the Ekman layer but I didn't really understand the explanation.
From Wikipedia: "Ekman transport, part of Ekman motion theory first investigated in 1902 by Vagn Walfrid Ekman, is the term given for the 90° net transport of the surface layer (the layer affected by wind) by wind forcing. This phenomenon was first noted by Fridtjof Nansen, who recorded that ice transport appeared to occur at an angle to the wind direction during his Arctic expedition during the 1890s."
Wikipedia shows the math, but it doesn't give an intuitive explanation. can anyone state a simple explanation?