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ISU GEO 211 - Radiation and Temperature continued
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GEO 211 1st Edition Lecture 7 Outline of Last Lecture I Radiation and Temperature A Radiation laws B Radiation of Sun and Earth C Incoming solar radiation D Atmosphere interferes with it by 1 Absorption 2 Scattering 3 Reflection Outline of Current Lecture II Radiation and Temperature continued A Absorption B Scattering C Reflection and albedo D Absorption by selected gases of the atmosphere a Selective absorbers b shaded areas c strong absorbers of infrared outgoing radiation d Strong absorbers of incoming short wave radiation E Greenhouse effect warming Earth s surface a Main greenhouse gases b Less greenhouse gases Current Lecture II Radiation and Temperature continued A Absorption 19 absorbed by our atmosphere and clouds 51 absorbed at Earth s surface Absorbed radiation is converted through heat energy Heat energy wavelength is changed to a larger one B Scattering deflection of radiation from its path into different directions without These notes represent a detailed interpretation of the professor s lecture GradeBuddy is best used as a supplement to your own notes not as a substitute altering its wavelengths Downward component of scattered radiation is diffuse radiation C Reflection and albedo Albedo reflective quality of the surface Reflection portion of arriving radiation that bounces back to space Wavelength is not altered in the process Lighter colored surfaces reflex more energy ex snow on top of a mountain Dark colored surfaces reflect less energy lower albedo Earth s albedo 30 D Absorption by selected gases of the atmosphere a Selective absorbers 1 Nitrous oxide 2 Methane 3 Oxygen and ozone 4 Water vapor 5 Carbon dioxide b Shaded areas represent percentage of radiation absorbed by different gases c Strong absorbers of infrared outgoing radiation 1 Carbon dioxide 2 Water vapor Atmosphere is transparent to incoming solar radiation between 0 3 and 0 7 m visible region Atmosphere is transparent to outgoing terrestrial radiation between 811 m atmospheric window d Strong absorbers of incoming short wave radiation 1 Ozone 2 Oxygen E Greenhouse effect warming Earth s surface a Main greenhouse gases 1 Carbon dioxide 2 Water vapor b Less greenhouse gases 1 Nitrous oxide 2 Methane 3 Chlorofluorocarbons


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ISU GEO 211 - Radiation and Temperature continued

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