- The global wind belts are driven by atmospheric circulation cells, which are created by the uneven heating of the Earth's surface and the planet's rotation.
- There are six major circulation cells: three in each hemisphere (Hadley, Ferrel, and Polar cells), which generate distinct wind belts at different latitudes.
- Air moves from high-pressure zones to low-pressure zones, but its path is deflected by the Coriolis Effect due to Earth’s rotation, causing winds to curve rather than flow directly north-south or south-north.
- The Trade Winds (Hadley Cell) blow from the northeast in the Northern Hemisphere and from the southeast in the Southern Hemisphere toward the equator, historically aiding sailing ships.
- The Westerlies (Ferrel Cell) blow from the southwest in the Northern Hemisphere and from the northwest in the Southern Hemisphere, prevailing between 30° and 60° latitude.
- The Polar Easterlies (Polar Cell) blow from the northeast in the Northern Hemisphere and from the southeast in the Southern Hemisphere, moving away from the poles toward lower latitudes.
- High-pressure zones (like those at 30° N/S) typically have dry, sinking air and little precipitation, while low-pressure zones (like the equator and 60° N/S) have rising air, leading to higher rainfall and storm activity.
Parent Tip: Review the logic above to help your child master the concept of global wind patterns worksheet.
