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Unformatted text preview: -->selective absorbtion at longer wavelengths around 4.5 microns. GREENHOUSE EFFECT • The greenhouse effect occurs when gases in our atmosphere selectively absorbs outgoing energy at a particular wavelength and radiates it away to heat the atmosphere • The greenhouse effect does not act like a greenhouse • Selective absorbers act as energy modification for earth • S/4 (1-A) = j 6 Te^4 ---> j = 1 --> no selective absorbers, j = 0-1 --> some greenhouse effect PROOF OF GREENHOUSE EFFECT Balanced Energy Equaiton Look at Energy Balance in more detail and track energy through the atmosphere to see how it is refected into our environment • Measure the energy leaving the Earth. ..some wavelengths are depleted through the absorption of selective absorbers • The atmosphere is transparent to incoming short wavelengths and opaque to outgoing long wavelengths • Where energy is absorbed governs the temperature structure of the atmosphere...
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- Spring '99
- Atmosphere, Greenhouse gas