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Rigorous Science

How would a permanently cold tower affect its environment?

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In my world, physics works exactly like on Earth, except that there is a narrow, 400 foot tall magical column sticking vertically out of the ground, which is magically always extremely cold -- I'm thinking -100 ËšF (200 K), the temperature at which dry ice sublimates, but I'm curious about other temperatures as well. I haven't decided on the exact local environment, but I'm thinking a temperate climate.

How would a permanently cold column like this affect its surroundings?

What I have considered so far:

  • I suspect it would become encased in frost from the surrounding humidity.
    • How far would we expect that frost to extend?
  • Right at the edge of the freezing zone, I would expect there to be liquid water from the humidity, but I'm not sure how much.
    • Is there any limit?
    • Would a lake eventually form around it?
    • Would it flood the surrounding areas?
  • Beyond the edge of the freezing zone, it would be cool.
    • How far would that extend?
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This post was sourced from https://worldbuilding.stackexchange.com/q/120842. It is licensed under CC BY-SA 4.0.

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