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Atmospheric light scattering: Difference between revisions
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→Mie scattering on thin clouds
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[[File:Cloud_mie03.jpg| | [[File:Cloud_mie03.jpg|500px|Mie scattering during the day]] | ||
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At sunrise and sunset, the effect of Mie scattering is even more prominent - since the direct sunlight coming through the upper atmosphere is red-golden due to the effect of Rayleigh scattering, the Mie-halo created by light scattering in the clouds is also coloured. Combined with diffuse shading on denser clouds, this generates very vivid colors which change quickly as the sun rises higher and both light intensity and hue change. | At sunrise and sunset, the effect of Mie scattering is even more prominent - since the direct sunlight coming through the upper atmosphere is red-golden due to the effect of Rayleigh scattering, the Mie-halo created by light scattering in the clouds is also coloured. Combined with diffuse shading on denser clouds, this generates very vivid colors which change quickly as the sun rises higher and both light intensity and hue change. | ||
[[File:Cloud_mie01.jpg|400px|Mie scattering on thin clouds during sunrise]] | [[File:Cloud_mie01.jpg|400px|Mie scattering on thin clouds during sunrise]] | ||
[[File:Cloud_mie02.jpg|400px|Mie scattering on thin clouds during sunrise, a bit later]] | [[File:Cloud_mie02.jpg|400px|Mie scattering on thin clouds during sunrise, a bit later]] | ||
Mie scattering is essentially absent whenever a cloud becomes opaque, i.e. when it is larger than the light attenuation length in the cloud. | Mie scattering is essentially absent whenever a cloud becomes opaque, i.e. when it is larger than the light attenuation length in the cloud. | ||