Monochrome rainbow

For the Tommy heavenly6 song, see Monochrome Rainbow (song).
Unenhanced photo of a Red Rainbow, taken near Minneapolis in July 1980

A Monochrome or Red Rainbow is an optical and meteorological phenomenon and a rare variation of the more commonly seen multicolored rainbow. Normally observed at either sunrise or sunset,[1] a monochrome rainbow requires a particular combination of atmospheric conditions to form. These conditions are usually present at the beginning or end of the day, most often during rainstorms, fog, or mist. The low angle of the sun scatters the shorter wavelengths of light, such as blue, green and yellow, and atmospheric water has a further scattering effect on the sunlight. In the correct combination, these conditions can result in a red or predominantly red rainbow, which, in the lower light environment where the phenomenon most often forms, can leave a highly dramatic effect.

References

  1. ↑ Groth, Ed; Foster, Jim (2011-09-10). "Red Rainbow at Sunrise - Earth Science Picture of the Day". NASA Earth Science Division. Retrieved 2013-06-27.

Further reading

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