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Radiative Transfer Radiative transfer equation (RTE) - IAP ...

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Transmission of Earth atmosphere<br />

Contribution of different species in the UV to infrared<br />

Transmittance<br />

Transmittance<br />

Transmittance<br />

Transmittance<br />

1<br />

0<br />

1<br />

0<br />

1<br />

0<br />

1<br />

ZENITH ATMOSPHERIC TRANSMITTANCE<br />

UV VIS Near IR Thermal IR<br />

CO 2<br />

0<br />

0<br />

0.3 0.4 0.5 0.6 0.8 1 1.2 1.5 2 2.5 3 4 5 6 7 8 910 12 15 20 25 30 40 50<br />

Wavelength [µm]<br />

copied from Petty, Atmospheric radiation<br />

CO<br />

N 2<br />

O<br />

CH 4<br />

O 2<br />

0<br />

O 3<br />

H 2<br />

O<br />

Total<br />

1<br />

0<br />

1<br />

1<br />

1<br />

0<br />

Transmittance<br />

Transmittance<br />

Transmittance<br />

Transmittance<br />

<strong>RTE</strong><br />

Beer’s law<br />

Abs. cross section<br />

Opacity &<br />

Transmission<br />

Mean free path<br />

Scattering<br />

Schwarzschild eq.

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