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Air currents ((Essential Questions, How does uneven heating of Earth’s…
Air currents
Local Winds: You have just read that global winds occur because of pressure differences around the globe. In the same way, local winds occur whenever air pressure is different from one location to another.
Global Wind Belts: shows the three-cell model of circulation in Earth’s atmosphere. There, the air moves northward until it cools and moves back to Earth’s surface near 30 latitude.
Global Winds: there are great wind belts that circle the globe. The energy that causes this massive movement of air originates at the sun.
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westerlies: are steady winds that flow from west to east between latitudes 30 N and 60 N, and 30 S and 60 S.
polar easterlies: are cold winds that blow from the east to the west near the North Pole and the South Pole
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sea breeze: is wind that blows from the sea to the land due to local temperature and pressure differences
land breeze: is a wind that blows from the land to the sea due to local temperature and pressure differences.
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The uneven heating results in some of the atmosphere to be warmer than other parts and changes in volume and pressure which result in updrafts and can cause thunderstorms and other violent weather
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Our planet's rotation produces a force on all bodies moving relative to the Earth. Due to Earth's approximately spherical shape, this force is greatest at the poles and least at the Equator.
The force, called the "Coriolis effect," causes the direction of winds and ocean currents to be deflected.
In the Northern Hemisphere, wind and currents are deflected toward the right, in the Southern Hemisphere they are deflected to the left
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