lecture3 - A. Surface-Atmosphere Radiation Exchange...

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Insolation and the Energy Balance
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I. Atmospheric Influences on Insolation in coming sol ar radi ation Processes: absorption , reflection , and scattering A. Absorption by gases particles, and droplets Example: ozone and UV radiation Not much absorption of visible radiation atmospheric window
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λ max = 0.5 μm
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B. Reflection redirection of energy away from the surface albedo = % of visible light reflected by an object or substance
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C. Scattering (or diffuse reflection) reflection resulting in large number of weaker rays traveling in many directions Scattered energy reaching Earth’s surface is diffuse radiation
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II. Transfer of Energy between the Surface and the Atmosphere atmosphere and surface continually exchange energy
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Unformatted text preview: A. Surface-Atmosphere Radiation Exchange involves mostly longwave radiation atmosphere absorbs some longwave radiation from the surface reradiation greenhouse gases = good absorbers 8 to 12 micrometers = atmospheric window (radiation passes through the atmosphere) max = 10 m Nitrogen Oxygen and Ozone Carbon Dioxide Water Vapor Total Atmosphere Greenhouse Effect B. Forms of Heat 1. Sensible Heat energy that can be sensed increase in temperature that we physically sense 1. Latent Heat energy required to change the phase of a substance evaporation = requires energy condensation = yields energy Annual Energy Balance for the Globe...
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This note was uploaded on 02/06/2012 for the course GEOG 1112 taught by Professor Kumar during the Spring '08 term at Georgia State University, Atlanta.

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lecture3 - A. Surface-Atmosphere Radiation Exchange...

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