GEO307 Ch 7 Notes - GEO307 Chapter 7 I. Heating Earth's...

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GEO307 Chapter 7 I. Heating Earth’s Surface a. Solar constant – 2 calories/cm^2/min (amount of heat arriving without atmosphere) b. Higher latitudes receive less energy/cm^2 than tropics, but have longer day length in summer c. d. Seasonal variation in solar radiation at different latitudes i. Larger at higher latitudes ii. II. Structure of the Atmosphere a. Homogenous mixture of gases b. Temperature i. Decreases with altitude in troposphere (unstable) ii. Increases with altitude in stratosphere (stable) c. Extends 90 km i. 99% of mass is <30 km ii. 90% of mass is <15 km d. Density of air i. Cold air denser than warm air ii. Moist air less dense than dry air iii. Surface air denser than higher air e. Isobars – lines of constant pressure f. Atmospheric pressure – force of overlying air at given point i. Low pressure results in areas of (warm, moist) rising air ii. High pressure indicates (cool, dry), descending air
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g. Atmospheric composition
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GEO307 Ch 7 Notes - GEO307 Chapter 7 I. Heating Earth's...

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