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GEOG 1112 Notes 5

GEOG 1112 Notes 5 - radiation Atmospheric influences on...

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Geography September 1, 2006 Stefan-Boltzman Law Energy emitted is proportional to temperature Wein’s Law Determines peak wavelength λ max = 2900/T Hotter objects equal shorter wavelengths Solar radiation = 0.5 μm peak λ Terresterial radiation = 10 μm peak A Global Energy Balance -Most gases are transparent to solar radiation – they absorb terrestrial radiation -Gases transparent to solar radiation, some absorb terrestrial radiation -Gases also scatter energy -The global energy budget – a balance between incoming solar radiation and outgoing terrestrial
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Unformatted text preview: radiation Atmospheric influences on Insolation-Radiant energy is absorbed, reflected, transmitted, or scattered Reflection-Redirection of energy – does not increase heat-Albedo – fraction of reflected energy Scattering-Scattered energy diffuses radiation which reduces intensity. The type is determined by the size of scattering agents.\ Rayleigh Scattering-Scattering agents are smaller than wavelengths...
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