Atmospheric circulation pattern, II The temperate zone
Between 30° & 60°N or S, air at surface moves from subtropical highs to sub-polar regions of lower barometric pressure
Moving air masses experience the Coriolis effect, creating the mid-latitude westerlies
Relatively humid air rises in sub-polar lows centered over 60°N or 60°S
Some air flows back toward subtropics along the tropopause
We call this large-scale pattern of circulating air the Ferrell cell