Technically, reported by amusingplanet, this beautiful optical phenomenon is called by the name of the circumhorizontal arc is the ice halo formed by ice crystals in the form of plates in cirrus clouds. This hello is so great that it appears this unique optical phenomenon of this kind.
Fire Rainbows is included in the category of rare phenomena, the article conditions and the causal factors of this phenomenon is quite difficult.Circumhorizontal arc that has a bright color this happens in summer and at certain latitudes. When the sun is very high in the sky, the incoming sunlight becomes flat, so the ice-shaped crystal will be split into each color as in a prism.
There are several conditions that must be met in order to occur this event that there should be cirrus cloud at an altitude of 6000 meters above the ground in the form of crystals. The angle of the sun must be 58 degrees above the sky. The
point of light that leads to a cirrus cloud must also be precise, and the cloud must also be shaped like a plate. Those are the conditions that must be met in order for the rainbow to occur. For example, in London, England, the sun can only reach a maximum height of 140 hours between mid-May and late July. While in Los Angeles, the sun is higher than 58 degrees for 670 hours between late March and late September
This is why the circumhorizontal arc is a rare phenomenon.
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