lecture 5 earth's energy balance slides

lecture 5 earth's energy balance slides - Energy Essentials...

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1 Energy Essentials Energy Pathways and Principles Shortwave energy in from the Sun Longwave energy out from the Earth Energy Pathways Figure 4.1 Energy as it enters the atmosphere Transmission Passage of energy through atmosphere or water Scattering Changing direction of solar radiation movement, without altering its wavelengths Refraction Change in frequency and direction of solar radiation Refraction Figure 4.3 Insolation in the atmosphere Insolation input – the amount of solar radiation that is received at the surface Insolation in the atmosphere Insolation input – the amount of solar radiation that is received at the surface Albedo – measure of reflectivity of a surface Scale of 0-1 where 0 is total absorption and 1 is total reflectivity
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2 Insolation in the atmosphere Clouds, aerosols, and the atmosphere’s albedo – clouds can have cooling affect – reflecting incoming insolation ‘cloud-albedo forcing’ OR clouds can have warming affect – absorbing and reemitting long wave radiation from the earth ‘cloud-greenhouse forcing’ Insolation in the atmosphere Insolation that gets to the surface can be absorbed. Insolation = in tercepted sol ar radi ation Absorption – the assimilation of insolation and the transformation of that energy to another form of energy Energy Energy transformation – moves from one form to another Radiant Æ chemical (photosynthesis)
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lecture 5 earth's energy balance slides - Energy Essentials...

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