In the ‘Ferrel Cell’ of global circulation, air at the surface generally moves: (A) From the Poles to 60° (B) From 30° to 60° Latitude (C) From the Equator to 30° (D) Only vertically
The Ferrel Cell is the mid-latitude atmospheric circulation cell located between the Hadley and Polar cells. Within this cell, surface air moves poleward, specifically from the subtropical high-pressure zone (30°) toward the subpolar low-pressure zone (60°). Because of the Coriolis effect, these surface winds become the “Westerlies” that dominate the weather in temperate regions. ANSWER: (B) From 30° to 60° Latitude
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The Ferrel Cell is often called the “zone of mixing.” Unlike the Hadley and Polar cells, which are driven directly by heat, the Ferrel Cell acts like a gear driven by the other two. It transports heat from the subtropics toward the higher latitudes. The surface winds in this cell move from west to east (the Westerlies). This is the region where the most significant weather changes occur, as cold air from the poles and warm air from the tropics constantly clash, creating the migratory high and low-pressure systems that characterize the climate of North America, Europe and parts of Asia.
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