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Anti-Crepuscular Rays

10/11/08

Permalink 01:30:10 pm, by millercommamatt, 89 words   English (US)
Categories: Meteorology

Anti-Crepuscular Rays

Last night we were treated to a very lovely sunset over the ocean. Additionally, opposite the sunset we saw a spectacular display of anti-crepuscular rays. Anti-Crepuscular rays appear to converge on the anti-solar point of the sun. That is the point in the sky directly opposite the sun. Anti-Crepuscular Rays, like crepuscular rays, require clouds to cast shadows in order to generate the effect.

You can read about this and other atmospheric optical phenomena at http://www.atoptics.co.uk/.


Anti-Crepuscular Rays
Photo Credit: Alan Brewer - NOAA ESRL

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