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Solar Radiation

Returns to outer space

Heather Mikus

on 26 April 2010

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Transcript of Solar Radiation

Solar Radiation 30% Returns to outer space 47% Absorbed and changed into thermal energy 23% Energizes the hydrologic cycle 0.2% Energizes the wind system 0.02% Energizes photosynthesis Solar radiation is reflected back to space by clouds, particles in the atmosphere, snow, sand, or concrete.
This is what gives the earth its glow when looking from outerspace. Absorbed solar radiation warms the earth's atmosphere, oceans, and continents
UV and IR are mostly absorbed in the atmosphere before reaching the earth's surface.
UV is converted to heat energy in the stratosphere.
Almost all visible light reaches the earth's surface. When does it not?
Visible light in used in plants to conduct photosynthesis (reacts with the plants chlorophyl). Solar radiation powers the water cycle (evaporation, condensation, and precipitation) Think about the relationship between hot and cold air.
Now think about the relationship between high and low pressures. Green House Effect Green House Gases Carbon Dioxide
Nitrous Oxide
Halogenated Hydrocarbons (chlorofluorocarbons)
The trapping and returning of infared radiation by carbon dioxide, water, and other atmospheric substances Green House Effect at Work in Your Life Practice Why is exposure to UV waves more harmful then exposure to IR radiation? Name two essential roles played by visible solar radiation. What is a consequence of increasing the concentration of carbon dioxide in the troposphere? Suppose the earth had a thinner atmosphere than it does now. How would the average daytime temperature be affected? How would the average nighttime temperature be affected?
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