Effect of multiple tons of dry ice being dropped bomb-like into lake near a city

I have a bomberplane capable of carying a nuke. A large nuke. Let us say that I don't like the idea of wiping a city from the face of the earth. Instead, I decide to mass-produce solid CO₂, and drop a lump (say, 2 cubic meters) of it into a lake near a large city.

If you put a small amount of dry ice into a bowl or bucket of water, you get some very dense, heavy fog that fills the container and overflows, behaving much like a liquid. I would like to know how it (as in the fog) behaves if it is made by multiple cubic meters of solid CO₂. Does it fill the basin and overflow, does the fog settle and the CO₂ float away, or does it behave like normal fog, causing some mild inconvenience, but leaving no trace after a week?

posted over 7 years ago

Mark Gardner‭

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