The three major wind belts, also known as circulations, are the Hadley cell, the Ferrel cell and the Polar cell. The circulation of these winds is caused by the rotation of the earth and the energy of the sun.Continue Reading
How these circulations move between the poles and the equator determines climate.
The Hadley cell covers latitudes from the equator to about 30 degrees. The air movement in this cell creates the subtropical jet stream, which flows from west to east.
The Ferrel cell covers latitudes from 30 to 60 degrees. The winds in this cell are prevailing westerlies at the Earth's surface.
The Polar cell covers latitudes above 60 degrees. At the poles, the air sinks and creates prevailing easterly winds.Learn more about Atmosphere
Global winds are a system of wind patterns distributing warm air unevenly across Earth. If Earth did not rotate, winds would move from the equator to their respective poles. Because Earth rotates, winds appear to be moving east in the Coriolis effect.Full Answer >
A hurricane is a severe kind of tropical cyclone, which is a low-pressure system with defined wind circulation that occurs over the tropics. During a hurricane, sustained winds reach speeds of 74 mph or higher, while air pressure in the center of the cyclone drops, and the Coriolis force causes these winds to spiral counterclockwise.Full Answer >
According to the National Center for Atmospheric Research, wind exists because of the movement of air and the differences in air pressure within the atmosphere. When high-pressure air moves toward low-pressure air, the difference in pressure leads to a faster air current or stronger wind.Full Answer >
The most common wind direction in the United States is from the south, based upon data collected from 300 National Weather Service stations. Prevailing winds are defined as the most frequent wind direction observed in one place over a certain period of time.Full Answer >