Exercise 2 solution

Northern hemisphere: the wind blows toward the north, and the net Ekman transport is 90 degrees to the right of the wind direction, i.e. toward the east.

Southern hemisphere: the same wind blows toward the north, and the net transport is 90 degrees to the left of it, i.e. toward the west.

Rule of thumb: stand with the wind at your back (direction of travel); net transport is to your right in the north, to your left in the south.