ch31_lecture - The Biosphere The Chapter 31 Mother Nature...

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The Biosphere The Biosphere Chapter 31 Chapter 31
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Mother Nature on Her Mother Nature on Her Really Bad Hair Days Really Bad Hair Days Winter of 1997-98 was a major El Niño Changed winds, ocean currents, cut food supplies of marine mammals in the Pacific Effects of this recurring weather pattern are felt worldwide
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Animation Animation Click to view animation. El Niño
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Biosphere Biosphere Sum total of the places in which organisms live Includes portions of the hydrosphere, lithosphere, and atmosphere
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Climate Climate Average weather condition in a region Affected by: amount of incoming solar radiation prevailing winds elevation
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The Atmosphere The Atmosphere Three layers Outer mesosphere Middle stratosphere (includes ozone layer) Inner troposphere (where air is warmed by the greenhouse effect)
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Ozone Layer Ozone Layer Region 17 to 27 kilometers above sea level in the stratosphere Molecules of ozone absorb most layers of ultraviolet light Protects living organisms from excess exposure to UV light
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Ozone Thinning Ozone Thinning In early spring and summer ozone layer over Antarctica thins Seasonal loss of ozone is at highest level ever recorded South America Antarctica Do not post on Internet
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Warming the Atmosphere Warming the Atmosphere Solar energy warms the atmosphere and sets global air circulation patterns in motion
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Animation Animation Click to view animation. Ocean currents and climate
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Rotation and Wind Direction Rotation and Wind Direction Earth rotates faster under the air at the equator than it does at the poles Deflection east and west
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Industrial Smog Industrial Smog Gray-air smog Forms over cities that burn large amounts of coal and heavy fuel oils; mainly in developing countries Main components are sulfur oxides and suspended particles
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Photochemical smog Photochemical smog Brown-air smog Forms when sunlight interacts with components from automobile exhaust Nitrogen oxides are the main culprits Hot days contribute to formation
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ch31_lecture - The Biosphere The Chapter 31 Mother Nature...

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