Hello! February is coming to an end, and it's time to start preparing for the new fiscal year. This time, we have prepared a quiz about "diamond dust," the sparkling ice!

Do you know what diamond dust really is? Here's a question for you!
What kind of ice particles are diamond dust?

• 
  A piece of snow falling from the sky
  Incorrect
• 
  Accumulated snow blown up by the wind
  Incorrect
• 
  Water vapor in the air is cooled and turns into ice
  Correct answer

  
  The correct answer is C, "Water vapor in the air is cooled and turns into ice."

  Diamond dust is created when water vapor in the air is rapidly cooled and sublimated (turns from a gas into a solid), creating ice particles that sparkle when sunlight shines on them!
  Also, this does not occur all the time; it can only be seen when the following four conditions are met:
  
  Diamond dust seems like something you can see anywhere, but in fact, there are multiple conditions for it to occur, making it a very rare phenomenon! Please go and look for it!

  [Sources and References]
  Weather News "Sparkling art of the harsh winter: Diamond dust appears?"
  https://weathernews.jp/s/topics/202101/020045/

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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