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Unformatted text preview: • Solar radiation – energy coming in o Have to subtract from the solar radiation all the energy that is reflected from the Earth and clouds o Albedo – percentage of energy that is reflected o Need to also add in greenhouse gases If there was no atmosphere or greenhouse gases the Earth’s temperature would be -18 degrees C • Average global temperature is 15 degrees C (60 degrees F) • Greenhouse effect- is about 33 degrees C • If 5 – 10 degrees C colder than today, 30% of land would be ice covered ← ← What can cause global climate change? (change in temperature) • Change in output of the sun • Change in the amount of solar radiation that reaches the Earth o Distance of the Earth to the sun varies (because of elliptical orbit) • Change in albedo (reflectivity) o Ice or clouds • Change the amount of greenhouse gases (GHG) in the atmosphere....
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This note was uploaded on 08/30/2010 for the course GEOL 105 taught by Professor Kohut during the Spring '08 term at University of Delaware.
- Spring '08