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24 - t What happens to the solar radiation as it passes...

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Stratosphere: Has a permanent “temperature inversion” Contains most of the atmospheres ozone. Ozone layer absorbs UV radiation and warms. Vertical Layers by Temperature Mesosphere Temperature normally decreases with height Coldest temperatures in the atmosphere occur at top of Mesosphere Mesopause Thermosphere Temperature increases with height Reaches 1100oC (2000oF) Thermosphere has no well-defined upper limit and contains only a minute fraction of the atmosphere’s mass. 99.9999% of all energy received, emitted, reflected or re-reradiated back to space from our Earth, originates at the sun What happens to solar radiation as it passes through the atmosphere?
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Unformatted text preview: t What happens to the solar radiation as it passes through the atmosphere? t Molecules and particles in the atmosphere intercept and absorb radiation. t 3 things: t Reflection t Scattering t Absorption t Carbon Dioxide and water vapor biggest absorbers. Albedo: It is expressed as a percentage of incoming solar radiation that is reflected back to space. Reflectivity of land surfaces varies with surface cover type. Fresh Snow: 75-95% Clouds: 44-90% depending on cloud type Deciduous Forest: 10-20% Water: Varies with angle of inclination of sun over that water surface. Albedo of Earth = 30%...
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