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ch9 - absorption 3 Enormous outpourings of gases to the...

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Ch.9- Climate Change Determining factors of Climate: 1) Solar radiation received 2) Solar radiation retained War climates are indicated by: 1) fossil reefs and limestones 2) aluminum ore bauxite, which forms only in tropical soils 3) bes of evaporate minerals that crystallize from evaporating water bodies Late Paleozoic Ice Age 1) Needed to have one or more large continental masses by the poles. E.g. Gonwanaland in the south pole region 2) Ocean-water circulation. No matter how much the Sun’s brightness varies, equatorial waters will receive more solar energy. Without continents, the water will flow laterally. Late Paleocene Torrid Age 1) Equatorial zones were largely covered by oceans, allowing more heat absorption. 2) As oceans warmed, areas covered by snow and ice decreased, thus allowing more heat
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Unformatted text preview: absorption. 3) Enormous outpourings of gases to the atmosphere from the North Atlantic Ocean occurred. 4) Oceans changed their style of density differentiation. Warm oxygen poor waters sank and circulated in the deep sea. Late Cenozoic Ice Age- 1) Breakup of the continents which have altered seaways 2) Continental masses have moved into polar latitudes, centering around the poles, giving rise to glacial conditions. Glacial Advance and Retreat Cycles: 1) Eccentricity of the Earth’s orbit around the Sun. 2) Tilt of the Earth’s axis. The tilt is between 21.5 degrees to 24.5, with a present 23.5 tilt, causing seasonal extremes. 3) Wobble, with periodicities of 23,000 and 19,000. Milder winters in the northern hemisphere caused by wobble....
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