Discussion
Correct order of the maximum vertical extent of atmospheric circulation cells is
Answer: A
The order is Hadley \(\gt\) Ferrel \(\gt\) Polar.
Each cell is capped by the tropopause over its latitudes, and the tropopause is highest over the tropics. The Hadley cell, rising in the deep convection near the equator, reaches about 15 to 18 km. The Ferrel cell in mid-latitudes extends to roughly 10 to 12 km, and the polar cell, under the low, cold polar tropopause, only to about 8 km.
The other orders put the shallow polar cell above one of the others, which is the opposite of how the tropopause slopes from equator to pole.
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