Earth 100 Ch 4-5 - Earth 100 Chapters 4 and 5 Circulation of the Earth's Atmosphere and Oceans Atmospheric Circulation Regions near equator receive

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Earth 100: Chapters 4 and 5: Circulation of the Earth's Atmosphere and Oceans Atmospheric Circulation Regions near equator receive light at 90° High latitudes receive light at lower angles Solar energy concentrated at equator Equator radiates more energy (IR) than poles (the hotter an object the more it  radiates Energy moved from equator to poles by convection (solar energy is received  greatest at equator) Energy transferred by winds and ocean currents   Why does the atmosphere circulate? More solar energy at equator, less at poles causes different heating Heating decreases density Air less dense than surroundings (i.e. hot air balloon) Dense air will flow horizontally to replace rising air Air near equator is warmed and rises  The rising air creates a circulation called a Hadley Cell   Rising air -> low pressure Sinking air  -> high pressure
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This note was uploaded on 03/30/2008 for the course EARTH 100 taught by Professor Pratigyapolissar during the Spring '07 term at Pennsylvania State University, University Park.

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Earth 100 Ch 4-5 - Earth 100 Chapters 4 and 5 Circulation of the Earth's Atmosphere and Oceans Atmospheric Circulation Regions near equator receive

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