sunenergy1011

sunenergy1011 - Sun APEnvSci20102011...

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Sun AP Env Sci 2010-2011
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Sun – The Source of Earth’s Energy • What Happens to the Incoming Energy? Source:  www.noaa.gov
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Fate of Incoming Solar Energy Reflected: 31% of Total Scattered Into Space by Atmosphere:  8% Reflected by Clouds: 17% Reflected by Earth’s Surface: 6% Absorbed:  69% of Total Absorbed by Gases (water vapor, dust, ozone) 19% Absorbed by Clouds  4% Absorbed by Earth’s Surface  46%  What Determines Whether Energy is Reflected or  Absorbed? Wavelength!
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•“Short” wavelength radiation  (0.3 to 0.7 um wavelength)  makes up a large fraction of Sun’s  radiation.   •This energy passes readily  through the Atmosphere.   •This is visible light •Major absorber @ UV (short)  wavelength: •Oxygen/Ozone 0.2-2 um  •Not Nitrogen Source:  NOAA
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• Albedo:  Fraction of total  radiation reflected by a  surface.
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This note was uploaded on 10/25/2011 for the course ENVSCI 101 taught by Professor Don'tremember during the Spring '11 term at Rutgers.

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sunenergy1011 - Sun APEnvSci20102011...

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