UIUC ATMS 100 - Radiation and the Greenhouse Effect (3 pages)

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Radiation and the Greenhouse Effect

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Radiation and the Greenhouse Effect


Brief overview of radiation and the greenhouse effect.

Lecture number:
Lecture Note
University of Illinois at Urbana, Champaign
Atms 100 - Introduction to Meteorology

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Lecture 4 Outline of Last Lecture I Conservation of Energy II Temperature III Temperature and Density IV Heat Energy V Phases of Water VI Phase Changes VII Heat Transfer VIII Solar Heating IX Rising Air and Temperature Outline of Current Lecture X The Electromagnetic Spectrum XI Electromagnetic Waves XII Radiation and Temperature XIII Solar Spectrum XIV Radiation and Color XV Radiation Budget XVI Radiation and Atmosphere XVII Greenhouse Effect XVIII Why is the Sky Blue Current Lecture XIX The Electromagnetic Spectrum a Radio TV Waves not very energetic ATMS 100 1st Edition b c d e f g XX a b c d XXI a b Microwaves not very energetic Infrared Radiation Visible Light we can see Ultraviolet Radiation we cannot see more energy than visible light X rays very energetic Gamma Rays Electromagnetic Waves Visible Spectrum shorter wavelength greater energy i blue violet most energetic ii red least energetic 1 um 10 6 m 1 millionth of a meter i 1 100th of a human hair Speed 3 0 X 10 8 m s 186 000 miles sec Radiation and Temperature all objects emit radiation at all times i at earth temperatures this is IR radiation objects with higher temperatures emit shorter wavelength more energy more radiation electromagnetic waves 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 c radiation intensity increases with temperature d objects that are hot enough emit visible light i red hot white objects ii the sun iii objects emit radiation of many different wavelengths XXII Solar Spectrum a the sun primarily emits visible light shortwave radiation i 160 000 times more radiation than the earth per unit b XXIII a b c d XXIV a b c d e XXV a b XXVI a area the earth emits infrared longwave radiation invisible to humans Radiation and Color most colors originate due to reflected light i green objects absorb all wavelengths except green which is reflected darker objects absorb many colors absence of

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