chap8 - Steve Fossetts GlobalFl er lFly Unrefueled...

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Steve Fossett’s Gl b lFl GlobalFlyer Unrefueled circumnavigation of the world in 67 hours
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Look For The Following Key Ideas I Ch 8 In Chapter 8 9 The interaction of ocean and atmosphere moderates surface temperatures shapes The interaction of ocean and atmosphere moderates surface temperatures, shapes Earth's weather and climate , and creates most of the sea's waves and currents. 9 Different amounts of solar energy are absorbed at different latitudes . The tropics are warmer than the polar regions because of this difference. 9 Uneven solar heating causes convection currents to form in the atmosphere. Th di ti f i fl i th t i i fl d b th t ti f E th The direction of air flow in these currents is influenced by the rotation of Earth. 9 Earth's rotation causes moving air (or any moving mass) in the Northern Hemisphere to curve to the right of its initial path, and in the Southern Hemisphere to the left . The apparent curvature of path is known as the Coriolis effect. 9 Each hemisphere has three large atmospheric circulation cells: a Hadley cell, a Ferrel cell, and a polar cell. Air circulation within each cell is powered by uneven solar heating and influenced by the Coriolis effect.
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Key Ideas Continued… 9 Large storms are spinning areas of unstable air that develop between or within air masses. Extra tropical cyclones originate at the boundary between air masses. 9 Tropical cyclones, the most powerful of Earth's atmospheric storms, occur within a single humid air mass.
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The Atmosphere Is Composed Mainly of Nit O d W t V Nitrogen , Oxygen, and Water Vapor What are some properties of the atmosphere? The lower atmosphere is a fairly homogeneous mixture of gases. Water vapor occupies up to 4% of the volume of the t h atmosphere. The density of air is influenced by temperature and water content. (right) Ascending air cools as it expands. Cooler air can hold less water so water vapor less water, so water vapor condenses into tiny droplets - clouds. Descending air warms as it compresses – the droplets (clouds) evaporate.
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Atmospheric circulation is powered by sunlight. Since Earth is in thermal equilibrium , what assumption can be made about the input and output of heat on Earth?
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The Solar Heating of Earth Varies i h L i d with Latitude How solar energy input How solar energy input varies with latitude. Equal amounts of sunlight are spread over a greater surface area near the poles than in the tropics. Ice near the poles reflects much of the energy that reaches the surface there.
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The Solar Heating of Earth Varies i h L i d with Latitude h h l i i h l ilib i Earth as a whole is in thermal equilibrium, but different latitudes are not. What factors govern the global circulation of air?
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