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Atmospheric circulation is characterized by three distinct bands, or convection cells, known as the equatorial Hadley cell, the Ferrel cell and the Polar cell, which drive wind and other air currents.
Tropical storms - OCR Global atmospheric circulation. ... The three cell model shows how energy is moved around the atmosphere. Figure caption, HP and LP refer to high pressure and low pressure.
To test this hypothesis, the researchers reduced the amount of down-welling over the polar cap using the NCAR Thermosphere-Ionosphere-Mesosphere-Electrodynamics General Circulation Model.