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Lecture 21 - Climate Change part 2

Lecture 21 - Climate Change part 2 - Atmosphere and Climate...

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Climate change: Change of atmospheric conditions and its relationships with lithosphere, hydrosphere, and biosphere Atmosphere as a complex chemical factory: With many little-understood chemical reactions Changes in greenhouse gases, temperature, and water vapor Atmosphere and Climate Change
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Temperature of atmosphere: Three factors The amount of sunlight received The amount of solar energy reflected and absorbed The amount of heat retention by atmosphere Earth: Absorbing the short wavelength solar energy, then radiating longer wavelength IR radiation Global warming: Greenhouse effect Global Warming
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The Greenhouse Effect
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The Greenhouse Effect
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The Greenhouse Effect
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The Greenhouse Effect
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Several atmospheric gases: CO 2 , CH 4 , CFCs trapping more heat and warming up the lower atmosphere, similar to the effect of a greenhouse The concentration of greenhouse gases increased recently due to human activities, anthropogenic gases The Greenhouse Effect
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Global Temperature Change
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