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Sun Halo

author: G.Cannat/Novapix

reference: t-met03-00020

Image Size 300 DPI: 30 * 28 cm

Halos are caused by sunlight being refracted by cirro-stratus clouds. These are thin clouds, very high in the atmosphere, and are composed of ice crystals. They bend light at a 22 degree angle, which creates a halo around the sun that is 44 degrees in diameter. 
May 30 2007

Keywords for this photo:

2007 - ATMOSPHERIC PHENOMENA - CIRROSTRATUS - CLOUD - EARTH - HALO - METEOROLOGY - SUN -