M Long A5.Dimming the Sun_1

M Long A5.Dimming the Sun_1 - Assignment 5. Dimming the...

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Assignment 5. Dimming the Sun. 1. The brightness and clarity of the sky immediately following the grounding of U.S. planes after 9/11 helped confirm that air pollution results in global dimming. 2. a) The change in temperature range in the U.S. was just over 1 degree Celsius during the three days that planes were grounded after 9/11. b) Temperature was affected because, with less pollution, more solar radiation was able to reach Earth. 3. Gerald Stanhill collected data from a network of light meters twenty years apart and found that there was a 22% reduction in the amount of sunlight received in Israel. 4. Although the amount of solar energy reaching the Earth has reduced by an estimated 2- 4%, the Earth is warming because an increase in greenhouse gasses prevents the sun’s heat from radiating back into space. 5. a) Pan evaporation rate measures the amount of water that evaporates from a container in the course of a day. b) In the last few decades, the rate of evaporation has been falling
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This note was uploaded on 07/24/2010 for the course SMT 312 taught by Professor Staff during the Winter '10 term at CSU Dominguez Hills.

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M Long A5.Dimming the Sun_1 - Assignment 5. Dimming the...

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