02-Intro-2(Geog142)2 - Introduction to Regional Geography...

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Introduction to Regional Geography II (PAGES: 1-41)
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Physical Geography Hydrologic Cycle Climate Plate tectonics Latitude and Longitude Map Reading & Interpretation
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Hydrologic Cycle
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Climate The long term conditions (over at least 30 years) of aggregate weather over a region, summarized by averages and measures of variability; a synthesis of the succession of weather events that we have learned to expect in any given location.
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Climatic Conditions Desertification- The process of desert expansion into neighboring steppe lands as a result of human degradation of fragile semi-arid environments Glaciations-Repeated advancement of continental ice fields Ice Age-Geologic time in which the average atmospheric temperatures lowers causing the expansion of continental ice fields Interglaciations-Periods of ice sheet contractions
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Climatic Conditions
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Climatic Conditions
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Global Patterns Hadley Cells Pressure zones Cyclonic Wind Westerlies Easterlies Jet Streams Deserts at 30 deg. Lat. (theoretical) C_Temperate Continental East Continental West Ocean Currents D_ Northern Hemisphere Polar caps
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Climatic Conditions
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Hadley classified the 3 cells of rising and falling air masses resulting in global wind and pressure patterns that occur north and south of the equator. Cell 1 (most well defined) Solar warmed, equatorial air masses rise, cool and create a zone of heavy precipitation, which rises higher from the heat released by condensation, creating a global zone of low pressure. The resulting cool and dry air can not descend through the heat pump and must flow both north and south, descending at about the 30 th latitudes. Creating the Easterly Trade Winds. The resulting zones of high pressure created by descending air are also dry and associated with the location of global deserts. Some of the high level air slides down the
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This note was uploaded on 08/29/2011 for the course GEOG 142 taught by Professor Unknown during the Spring '11 term at Mott Community College.

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02-Intro-2(Geog142)2 - Introduction to Regional Geography...

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