Radiation and the Planetary Energy Balance. Electromagnetic Radiation Solar radiation warms the planet Conversion of solar energy at the surface Absorption and emission by the atmosphere The greenhouse effect Planetary energy balance. Spectrum of the sun compared with that of the earth.
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with that of the earth
E* = sT4
Molecules are groups of atoms that share electrons (bonds)
Photons can interact with molecules
Transitions between one state and another involve specific amounts of energyAtoms, Molecules, and Photons
NDancing Molecules and Heat Rays!
Diatomic molecules can vibrate back and forth like balls on a spring, but the ends are identical
HDancing Molecules and Heat Rays!
Molecules that have many ways to wiggle are called “Greenhouse” molecules
Absorption spectrum of CO2 was measured by John Tyndall in 1863