The Greenhouse Effect Introductory Physics Scott A. Mathews, Ph.D. The Catholic University of America.

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Presentation transcript:

The Greenhouse Effect Introductory Physics Scott A. Mathews, Ph.D. The Catholic University of America

Black Body Radiation I is the amount of energy per unit surface area per unit time per unit solid angle emitted in the frequency range between ν and ν+dν by a black body at temperature T;energysurface areatimesolid angle h is Planck's constant;Planck's constant c is the speed of light; andspeed of light k is Boltzmann's constant.Boltzmann's constant

Black Body Curves for Sun and Earth

Atmospheric Absorption

“Tipping Point” Non-linear system Positive feedback Changes in Albedo Melting Ice Changes in chemistry Solubility of CO 2 Changes in plant life Effecting Albedo Reducing sequestration