At the end of the year, the theme song for "Okaeri Mone", "Nanairo", was performed at the NHK Kohaku Uta Gassen in Kesennuma, Miyagi Prefecture, where the drama is set, which caused quite a stir.
This time, we have a quiz about iridescent clouds, or "saiun," which also appear in the story "Okaeri Mone"!

What is the component of the cloud that causes iridescent clouds?

• 
  Water droplets
  Correct answer

  
  Source: "Amazing Weather Encyclopedia"

  Clouds are made up of water droplets and ice particles. "Iridescent clouds" are a phenomenon that occurs in clouds made up of water droplets (and may also contain ice particles). These clouds are called cirrocumulus, altocumulus, or cumulus clouds, and have a fluffy appearance like cotton candy.

  

  "Iridescent clouds" occur when the light of the sun or moon strikes the water droplets that make up the clouds and breaks into rainbow colors (this phenomenon is called "diffraction"). Incidentally, halos and arcs are other phenomena that occur due to ice particles rather than water droplets.

  

  Besides iridescent clouds and rainbows, there are many other rainbow colors that can be seen in the sky! Please look up at the sky and try to find various phenomena.

• 
  Ice particles
  Incorrect
• 
  Both (water droplets and ice particles)
  Incorrect

Ai Tsuchiya

I've loved looking at the stars and the sky since I was in elementary school, and when I happened to see a circumzenith arc in my first year of high school, I became interested in meteorology☺️ My favorite foods are pudding and omelet rice, and my hobbies are basketball and stargazing. I'm in my third year at Kugenuma High School.

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