The existence of these cells creates a prevailing wind pattern moving from high
pressure regions on earth to low pressure regions. These pattern can be seen as
red arrows above.
This pattern, however, is an extreme over simplification. One major additional
contributor to the pattern is the "Coriolis effect." The Coriolis effect is the
observation that an object moving perpendicular to the rotation of a sphere (for example, moving
north or south on the earth which rotates east-west) will
not travel in an apparent straight line, but will curve in a specific direction.
This is called the Coriolis effect because the wind is not actually
changing direction, it's the earth that's moving below it.
