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ATOC 4720 class27

ATOC 4720 class27. Radiative transfer in global energy balance The globally averaged atmospheric energy balance. 1. Radiative transfer in global energy balance. Planck’s law: Stefan-Boltzmann’s law: Wien’s displacement law: Kirchhoff’s law:. Effect of atmosphere on radiation.

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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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