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Ch 12.3 Notes (Global WInd Belts (Prevailing WInds (The Global Cells…
Ch 12.3 Notes
Global WInd Belts
Cells near the Equator move north and Cells near the Poles move south.There're 3 Cells in each Hemisphere doing this,being 1 driven by the motion of the others.
Prevailing WInds
The Global Cells create north & south wind.With the Coriolis Effect,they blow east or west,making previsible wind Trade Winds and Polar Easterlies move east to west.Westerlies move west to east.
Coriolis Effect
Earth's rotation causes moving air and water to appear to go right in north and left in south.This is Coriolis Effect.The contrast between low and high pressure and Coriolis Effect creates distinct wind patterns.
Jet Streams
Narrow band of high winds near troposphere's top.Unpredictable and fast.Move from west to east,looping north and south.Influence weather moving cold air to tropics and warm to poles.
Essential Questions
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Polar Easterlies,Westerlies and Trade Winds
More Sun creates Warmer AIr.The warmer air is, the smaller air pressure is.And wind is the movement of air from areas of high pressure to areas of low pressure.
Global WInds
Great WInd Belts circle the globe.Energy that moves air begins at the Sun.Wind patterns can be global or local.
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Local Wind
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Sea and Land Breezes
A sea breeze is wind from hydrosphere to geosphere and land breeze is wind from geosphere to hydrosphere.At Sun,Land warms faster than Water,so it's air rises and water air comes to fill the gap.At Sun Lack,vice-versa.