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Credit: E. Wiebe

Brilliant colours from the setting sun suggest clouds made of waves of flame. This image was taken in the grounds of Craigdarroch Castle in Victoria, BC, Canada.

At sunrise and sunset the sun's rays pass through more atmosphere on their way to your eyes than at any other time. This extra distance causes greater apparent extinction of the shorter wavelengths of light (the blue end of the rainbow spectrum) and also gives refraction a greater opportunity to separate the colours that remain.

In this image the orange-light light at sunset has illuminated clouds from the side and below exaggerating the appearance of any hooks and prominences and giving the impression of flames.

UVic / SEOS / Climate Group / About Front Page Picture / Sunset Sky Last updated: Wednesday, 02-Oct-2013 10:15:56 PDT
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