Rare Phenomenon in the Sky: Anticrepuscular Rays, Brazil, December 2012

December 17 2012 – Rare Phenomenon in the Sky: Anticrepuscular Rays

I found information of this video on the radioactivechat blogspot. This amazing light phenomenon was recorded in Brazil on Dec 17, 2012. It represents one of the most unusual phenomenon in the sky which is called “anticrepuscular rays“. These appear to emanate not from the sun, but from the point on the horizon directly opposite to it. Cloudspotters will, therefore, only see anti-crepuscular rays when they stand with the sun directly behind them. The shadows of individual clouds behind the cloudspotter are cast onto the cloud layer in front. In the movie below, this is a high layer of ice crystals, called a Cirrostratus.

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