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2. Circumhorizontal arc - Wikipedia

   en.wikipedia.org/wiki/Circumhorizontal_arc

   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.

3. Atmospheric optics - Wikipedia

   en.wikipedia.org/wiki/Atmospheric_optics

   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.

4. Halo (optical phenomenon) - Wikipedia

   en.wikipedia.org/wiki/Halo_(optical_phenomenon)

   The ice crystals responsible for halos are typically suspended in cirrus or cirrostratus clouds in the upper troposphere (5–10 km (3.1–6.2 mi)), but in cold weather they can also float near the ground, in which case they are referred to as diamond dust. The particular shape and orientation of the crystals are responsible for the type of ...

5. List of cloud types - Wikipedia

   en.wikipedia.org/wiki/List_of_cloud_types

   Clouds of the genus nimbostratus tend to bring constant precipitation and low visibility. This cloud type normally forms above 2 kilometres (6,600 ft) [10] from altostratus cloud but tends to thicken into the lower levels during the occurrence of precipitation. The top of a nimbostratus deck is usually in the middle level of the troposphere.

6. Glory (optical phenomenon) - Wikipedia

   en.wikipedia.org/wiki/Glory_(optical_phenomenon)

   Glory around the shadow of a plane. The position of the glory's centre shows that the observer was in front of the wings. A glory is an optical phenomenon, resembling an iconic saint's halo around the shadow of the observer's head, caused by sunlight or (more rarely) moonlight interacting with the tiny water droplets that comprise mist or clouds.

7. Incredible rainbow cloud spotted in China - AOL

   www.aol.com/lifestyle/incredible-rainbow-cloud...

   A stunning rainbow cloud lights up the sky in Southern China