Global Circulation as a Response to Unequal Heating (Grade 11 NSC Matric Geography): Flashcards
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Global air circulation
Global air circulation
Large-scale movement of air masses across planet
Cause of global air circulation
Cause of global air circulation
Unequal heating of Earth's surface
Unicellular model
Unicellular model
One circulation cell per hemisphere
Ascending air
Ascending air
Air moving upward when heated, less dense
Subsiding air
Subsiding air
Air moving downward when cooled, more dense
Weather from ascending air
Weather from ascending air
Clouds and precipitation
Weather from subsiding air
Weather from subsiding air
Clear, dry conditions
Convergence
Convergence
Air moving towards same location
Divergence
Divergence
Air moving away from location in different directions
Where air rises in unicellular model
Where air rises in unicellular model
At the equator