Although it may be 'apparent' (it is a harmonic of sorts), the apparentness no means invalidates its importance to weather mechanics. Because the Coriolis effect exists, it causes a weather patterns to spiral and vorteces to build. Without the Coriolis effect, cyclonic systems could not grow and develop. This is why we do not have hurricanes at the equator. The spiral, interestingly, allows force interactions to build and feed. Without the coriolis effect we would not have hurricanes...and we would not have the Great Red Spot on Jupiter.