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ATOC 4720 class27

Explore the laws of radiative transfer impacting Earth's energy balance, including absorption, scattering, and emission processes in the atmosphere. Dive into the globally averaged atmospheric energy balance to grasp its complexities.

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ATOC 4720 class27

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  1. ATOC 4720 class27 • Radiative transfer in global energy balance • The globally averaged atmospheric energy balance

  2. 1. Radiative transfer in global energy balance Planck’s law: Stefan-Boltzmann’s law: Wien’s displacement law: Kirchhoff’s law:

  3. Effect of atmosphere on radiation Scattering:

  4. Reflection

  5. Longwave emission

  6. Processes important for energy balance • Scattering of solar radiation by clouds (albedo); • Absorption of solar radiation by gases (O3 upper atmosphere and H2O lower atmosphere);[photodissociation] • Absorption of terrestrial radiation by gaseous constituents (CO2, H2O, O3): green house effect; • Absorption of terrestrial radiation by clouds, enhance green house effects; [example]

  7. 2. The globally averaged atmospheric energy balance Blackboard demonstration: see class notes for detail.

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