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by emtel 1914 days ago
No, and the other comments about gas laws and volume are overthinking it a bit. Pressure at the surface is caused by the weight of the atmosphere. On earth, a column of air extending from sea level to space, with cross sectional area one square inch, weighs 15 pounds.

Neither the temperature or volume of the atmosphere changes its weight. (Ok, I suppose a hotter atmosphere has more volume and extends higher into space and weighs slightly less, as it is farther from the planet on average, but I assume that’s a fairly negligible effect)

1 comments

You forget things like condensation/solidification of things like CO2 in lower temperatures, so atmosphere composition would change dramatically, and so would overall 'weight' of the column to space you mention.

Anyway as other mention it doesn't change that much in survability, having 116 days long single Venus-day would mean temperature differences would be extreme, probably in hundreds of degrees.