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> Sun Halo
Sun Halo
author: L.Laveder/Novapix
reference: t-met03-00007
Image Size 300 DPI: 19 * 29 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.
In brief:
- around the Sun, the 22° halo, not very contrasted.
- on the right of the Sun, a bright parhelia uncolored.
- atop the 22° halo, the upper tangent arc (a splayed U shape).
- above it, ""parallel" to the 22° halo, the Parry arc.
- near the zenith, the circumzenithal arc, very colorful.
- just under, tangent to it, the inconspicuous supralateral arc.
In brief:
- around the Sun, the 22° halo, not very contrasted.
- on the right of the Sun, a bright parhelia uncolored.
- atop the 22° halo, the upper tangent arc (a splayed U shape).
- above it, ""parallel" to the 22° halo, the Parry arc.
- near the zenith, the circumzenithal arc, very colorful.
- just under, tangent to it, the inconspicuous supralateral arc.
Keywords for this photo:
2006 - ATMOSPHERIC PHENOMENA - CIRROSTRATUS - CLOUD - EARTH - HALO - METEOROLOGY - PARHELION - SUN -
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