Earth Systems Chapter 3

Earth Systems Chapter 3 - Chapter 3: The Earths Modern...

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Chapter 3: The Earth’s Modern Atmosphere I. Atmospheric Composition, Temperature, and Function Exosphere : “outer sphere” A. Atmospheric Profile: Air pressure : the weight of air -Gravity -Density decreases with altitude B. Atmospheric Composition: -Homogenous and stable -Nitrogen (78%), Oxygen (21%), Carbon dioxide (.039%), Argon (.9%), other (.06%) -Exceptions: ozone layer & increasing carbon dioxide Homosphere : a zone of the atmosphere from Earth’s surface, composed of an even mixture of gases, including nitrogen, Oxygen, Argon, Carbon Dioxide, & trace gases C. Atmospheric Temperature: Stratosphere : portion of Homosphere that ranges from 18 to 50 km from Earth’s surface Troposphere : lowest level of atmosphere -troposphere ozone harms biological tissue, children in urban areas vulnerable Normal lapse rate : the average rate of temperature decrease with increasing altitude in the lower atmosphere Tropopause : average temperature of -57 C( -70 F) occurs, troposphere’s upper limit Environmental lapse rate : the actual rate of temperature decrease with increasing
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This note was uploaded on 12/14/2011 for the course EARTH SYS 101 taught by Professor Asar during the Fall '11 term at Rutgers.

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Earth Systems Chapter 3 - Chapter 3: The Earths Modern...

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