0-dimensional Analysis: Štefan-Boltzmann Law … figure on page 60 is a misprint. Please refer to...

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Page 1: 0-dimensional Analysis: Štefan-Boltzmann Law … figure on page 60 is a misprint. Please refer to this corrected figure: Štefan-Boltzmann Constant The figure on page 60 is a misprint.

Thefigureonpage60isamisprint.Pleaserefertothiscorrectedfigure:

Thefigureonpage60isamisprint.Pleaserefertothiscorrectedfigure:

What Determines the Temperature of the Earth?0-dimensional Analysis: Štefan-Boltzmann Law

σ is the Štefan-Boltzmann constant S is the solar irradiance (≈ 1366 W/m2)α is the planetary albedo (≈ 0.29 due to aerosols, clouds, surface)ε is the emissivity (≈ 0.61 due to greenhouse gases, clouds, surface)

Energy Balance: Ein=Eout

1− ! !4 = !"!!

Ein = πr2 1−α( )S Eout = 4πr

2εσ T 4

Jožef Štefan1835-1893

Ludwig Boltzmann1844-1906

Štefan-BoltzmannConstant

What Determines the Temperature of the Earth?0-dimensional Analysis: Štefan-Boltzmann Law

σ is the Štefan-Boltzmann constant S is the solar irradiance (≈ 1366 W/m2)α is the planetary albedo (≈ 0.29 due to aerosols, clouds, surface)ε is the emissivity (≈ 0.61 due to greenhouse gases, clouds, surface)

Energy Balance: Ein=Eout

1− ! !4 = !"!!

Ein = πr2 1−α( )S Eout = 4πr

2εσ T 4

Jožef Štefan1835-1893

Ludwig Boltzmann1844-1906

Štefan-BoltzmannConstant