Okay, long list of wierd things that could happen...
Comets come into atmosphere and melt leaving water and tiny dust landing.
Additional water will increase the oceans.
Water takes lots of energy to heat (in chemistry terms) so more water = more energy to maintain temperature = planet cools.
Enough water (e.g. comets landing to cause 800m sea level rise) would eventually accumulate into an ice age if the planet wasn't heated well enough.
So I'm guessing your society will probably still be stuck in the leftovers of an ice age. Atmospheric pressure is more regulated by temperature than things falling from space, but water from space will drop worldwide temperature if there is enough of it... and then change atmospheric pressure...
It's all rediculously interconnected. You want great answers, ask UN Climate Change what they know...
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I dunno about that. Sure, keep dumping ice on a planet, it'll cool ... but solar energy plus core-produced radioactive heat, I would think, would soon bring back equilibrium.
Plus, the energy of the ice meteors themselves, as they brake into the planet, would ADD to the total energy of the system.
This is not an effect I would worry about unless I thought it was a fun thing to include.
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I'm just thinking of the specific heat capacity of water, compared to most other things, and its stupidly large. Water's specific heat is about 4kJ/kg... Iron is 0.4kJK/kg
It just takes a lot more energy to warm up water. So depending on how much you dump in there, how fast, etc, etc, etc you could cause a nice dip in the temperature. I doubt the energy of the asteroids would compensate for the heat capacity of the water.
"Sacrificing minions... is there any problem it cannot solve?" - Order of the Stick
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- VTES Geek (http://juggernaut1981.blogspot.com/)
Some of the books I have written, or am still writing...
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Venus Public Transit, Map Of Ceres, Jack Vance's Ports Of Call & Lurulu ... why do I only have 3 maps here?
Venus Public Transit, Map Of Ceres, Jack Vance's Ports Of Call & Lurulu ... why do I only have 3 maps here?
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If the matter becomes gas in the atmosphere, then yes. Our atmosphere is mostly free nitrogen, about 1/5 free diatomic oxygen, plus tiny little trace gases like argon.
But you can have anything you want in your comets ... just plain water and dirt would be fine, and if they don't bring in any atmospheric gases, then there's no increase in air pressure ... okay, maybe a little, due to the increased water volume ... I'm not really sure, to be honest. I kinda doubt it. Google for "vapor pressure" though. I once tried to figure the vapor pressure for neon on Pluto ~ omg I'm such a geek.
Venus Public Transit, Map Of Ceres, Jack Vance's Ports Of Call & Lurulu ... why do I only have 3 maps here?