ch 24 3 solar energy & wind
TRANSCRIPT
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Solar Energy & Wind
24.324.3
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Energy in the Atmosphere
Solar Energy = energy from the Solar Energy = energy from the sunsun
Some solar energy that reaches the Some solar energy that reaches the atmosphere is reflected backatmosphere is reflected back
Some is absorbed by atmosphereSome is absorbed by atmosphereSome is absorbed by Earth surfaceSome is absorbed by Earth surface
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Energy Transfer & Atmosphere
Energy is transferred in 3 waysEnergy is transferred in 3 ways Radiation—Heat in all directionsRadiation—Heat in all directions Convection— currents of H & C airConvection— currents of H & C air Conduction—Heat Conduction—Heat
with direct contactwith direct contact Greenhouse Effect = some energy in Greenhouse Effect = some energy in
atmosphere is reflected back to Earth atmosphere is reflected back to Earth surfacesurface
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Wind
The Flow of air from High The Flow of air from High Pressure to Low PressurePressure to Low Pressure
Winds are cause by Winds are cause by differences in Air Pressure differences in Air Pressure and Temperatureand Temperature
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Local Winds (Sea Breeze)Sea Breeze—Day—Air above land Sea Breeze—Day—Air above land
warms & rises, cool air from water warms & rises, cool air from water moves in & replaces warm land airmoves in & replaces warm land air
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Local Winds (Land Breeze)Land Breeze—Air above water Land Breeze—Air above water
warms and rises, cool air from land warms and rises, cool air from land moves in & replaces rising warm moves in & replaces rising warm water airwater air
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Global Winds
GW = winds that blow over long GW = winds that blow over long distances from specific distances from specific directionsdirections
Coriolis Effect = wind that are Coriolis Effect = wind that are bent Because the Earth is bent Because the Earth is spinningspinning
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Jet Stream—high speed air flow
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Prevailing winds Polar Easterlies:Polar Easterlies:
From 60-90 From 60-90 degrees latitude. degrees latitude.
Prevailing Prevailing Westerlies:Westerlies: From 30-60 From 30-60 degrees latitudedegrees latitude
Tropical Tropical Easterlies:Easterlies: From From 0-30 degrees 0-30 degrees latitude (aka latitude (aka Trade Winds). Trade Winds).
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MonsoonsMonsoon = Large Scale Land Monsoon = Large Scale Land
& Sea Breeze & Sea Breeze (Summer (Summer (sb)(sb) = Rainy Season— = Rainy Season—
air moves from Ocean to land)air moves from Ocean to land)(Winter (Winter (lb)(lb) = Dry Season—Air = Dry Season—Air
moves land onto water) moves land onto water)
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MonsoonPictures