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The misleading term "fire rainbow" is sometimes used to describe this phenomenon, although it is neither a rainbow, nor related in any way to fire. The term, apparently coined in 2006, [3] may originate in the occasional appearance of the arc as "flames" in the sky, when it occurs in fragmentary cirrus clouds. [4]
Iridescent mid altitude clouds Iridescent polar stratospheric cloud at sunset over Aberdeen, Scotland Cloud iridescence, seen above the clouds covered with grey clouds, Pondicherry, India. Cloud iridescence or irisation is a colorful optical phenomenon that occurs in a cloud and appears in the general proximity of the Sun or Moon.
A rainbow is a narrow, multicoloured semicircular arc due to dispersion of white light by a multitude of drops of water, usually in the form of rain, when they are illuminated by sunlight. Hence, when conditions are right, a rainbow always appears in the section of sky directly opposite the Sun.
The clouds are formed of tiny ice crystals which create the colours as light shines through them. Skip to main content. Sign in. Mail. 24/7 Help. For premium support please call: 800 ...
Nacreous clouds are rarely spotted in the UK because of the exceptional conditions needed.
In an incredible weather phenomenon, these colorful clouds were seen in the sky above southern China
The circumzenithal arc, also called the circumzenith arc (CZA), the upside-down rainbow, and the Bravais arc, [1] is an optical phenomenon similar in appearance to a rainbow, but belonging to the family of halos arising from refraction of sunlight through ice crystals, generally in cirrus or cirrostratus clouds, rather than from raindrops.
When a veil of clouds drapes the sky, be on the lookout for sun dogs -- pieces of rainbows that glow to the left and right of the sun. They often appear in pairs when sunlight shines through thin ...