Whow how do you get notifications from threads D:
Also Venus has literally 225,000 times our carbon dioxide levels and it took like 300 million years to get to it's point so like, if we're going to compare to that, the planet's temperature should go up about .008 degrees in 300 million years if we doubled our levels.
Also it should be noted that very little light or radiation gets through the first part of the planet's atmosphere.
So the traditional reflection infrared back up towards the mid troposphere to reflect infrared back down doesn't do anything at all.
In reality, the heat is mostly from volcanic gases that aren't otherwise absorbed by the oceans, which includes sulfur and carbon dioxide.
The oceans typically absorb this and when they're gone the planet literally warms up when the oceans can't absorb the heat and keep things at a regular temperature.
How much is this?
Well imagine if all the continental plate ridges in the ocean were exposed and those massive amounts of lava were dumping crap into the air; it could literally be 10,000 times what it is now. It also should be noted that there are a ton of craters on venus's surface still visible that have remained mostly unchanged. This means that, likely, their atmosphere either decreased first which let more in or there were a kabillion meteorites that smacked into it at this time, possibly causing the problems. Also the ocean's became the atmosphere, the water vapor warming the planet, and the lack of an ocean preventing the capture of volcanic heat and gases, and later on the hydrogen and oxygen dissociated from solar radiation when convection at the once cooler surface slowed down to almost nothing (which warmed up to match the mantle) meaning the carbon dioxide came after the run off global warming effect.
There is a fundamental limit to how much carbon dioxide can warm a planet, considering that it's more about distribution than thickness.
When we consider the fact it's more of a surface in the mid troposphere, that visible light passes through, that goes to the earth, which then about 50% is turned into infrared, that gets reflected back up, only to be reflected back down again, the thickness of the carbon dioxide in the mid troposphere has almost no impact. The carbon dioxide levels means hardly anything. Really it's more a feedback from when the oceans warm up; which typically follow a warming event. Assuming that it caused significant warming every other heat cycle would never stop warming, but obviously we've gotten colder since the Jurassic period; it should also be noted that it's believed carbon dioxide promotes the production of water vapor, but that is also turning out to be a lot less etc.
Venus is simply a terrible example for earth based global warming.
However I thought it would be funny to make a Venus based cybernations like game that had a global warming function in it much like global radiation lol
Edited by Manoka, 29 October 2012 - 11:18 AM.