qThermally Direct
Cells (Hadley and Polar Cells)
q
Both cells have their rising branches over warm temperature zones and sinking
braches over the cold temperature zone. Both cells directly convert thermal energy to kinetic energy.
qThermally Indirect Cell (Ferrel Cell)
q This cell rises over cold
temperature zone and sinks over warm temperature zone. The cell is not driven by thermal forcing but driven by eddy (weather
systems) forcing.