The term "Runaway Greenhouse Gas Effect" only refers to the process in which, when a green house gas (such as: Methane, Carbon Dioxide, whatever SO2 that you mentioned is) gets released into the atmosphere and stops heat that has entered from escaping.
The mere fact that those gasses are there (and you do acknowledge that they are there) means they had to have gotten there somehow. (you also acknowledge that heat cant escape because of the presence those gasses being there)
Them getting there and causing that problem is by definition what a "Runaway Greenhouse Gas Effect" is.
What more do I need to look up for this argument exactly?
*Drops Mic*
The most important greenhouse gas on earth is H20. It creates the 'greenhouse effect' we have here on earth and has for a very long time. If it wants to 'run away', it's got the whole ocean with which to do so.
It is not true that 'heat cant escape' with H20 being the primary greenhouse gas nor any other. There is an equilibrium value reached on every planet which is a function of the various methods by which heat 'escapes' such as overturning and the various energy inputs (mostly solar.) This equilibrium certainly drifts around and the bands of various ecosystems consequently shift in various ways.
These processes have been going on since the beginning of life on earth a billion or so years ago and it nor any of the various catastrophes have managed to snuff out life yet. On the contrary, it has resulted in an interesting and wonderful diversity which would be much reduced and much more boring in a 'stable' system. Anyone who is all freaked out about earth turning into venus overnight has been severely emotionally damaged by the dedicated effort of a band of skillful grifters. I can hardly believe that anyone is this retarded, but there it is.
no no no no one is that retarded. I did not (nor do I believe the original person who mentioned the Venus video) mean to imply that earth will turn into Venus over night or even ever. We don't know how Venus evolution actually happened, (as Spendulus stated earlier)
The video is just to imply that Venus is an extreme example of "run away green house gas effect"
The Greenhouse that was Venus' atmosphere, trapped those gasses once they were released and the causality of that did not allow heat to escape- that's what "Runaway Green House Gas" is by definition
for a bunch of smart guys your all not getting a very fucking simple concept
and Also:
yes Oxygen also H2O vapor are Greenhouse gasses and earth once mostly had a methane atmosphere until an Oxygen was released in a kind of break out sceanrio which happened and changed our atmosphere and since then, our atmosphere has had differing levels of CO2 and Oxygen at different points, yes. In fact, in times where there was a lot of oxygen we had enormous insects because of their breathing tube system.
None the less if you look up the definition of "Runaway Greenhouse Gas Effect" its when greenhouse gasses get release and smother the planet, allowing the suns heat to enter but not to escape, and this can happen at any point in a planets life but "Run Away Greenhouse Gas Effect" is still what its called.
So even if Venus went from molten rock immediately to the way it is now you would still be correct to say "Venus suffered runaway Greenhouse Gas Effect, when it was very young"
The evidence is there, and there is no need for name calling (name calling is retarded, were arguing about the definition of what to call the chain of events that led up to the current conditions on Venus, if this debate is managing to offend you enough to start calling people retarded you may need to get more fresh air, sunlight and friends)
A "runaway greenhouse effect" is defined as when greenhouse gasses accumulate until a planet's oceans boil away, due to a POSITIVE FEEDBACK between atmospheric opacity and surface temperature. The greenhouse effect on Earth warms us about 7C. The greenhouse effect on Venus warms that planet a certain amount.
If the basic temperature on Venus was sufficient to boil away the oceans, then no greenhouse effect needs to be hypothesized to do that. Venus is much closer to the sun and has about twice the solar energy. Doubling solar energy on Earth and what happens?
1,260,000,000,000,000,000,000 liters of water on Earth.
1.26 x 10^20
The size of the Earth's side presented to the Sun.
3.5 x 10^10 square meters
A guess as to how much additional energy would reach the Earth's surface if incoming solar energy were doubled.
3 x 10^2 watts (watt is a joule per second)
A million years is 3.2 x 10 ^13 seconds
How many watts over a million years?
9.6 x 10^15 watts per square meter
How many additional watts on the Earth then?
3.4 x 10 ^26 watts
Assume water starts at a temperature of 25C. How many watts to boil a liter?
313 kilojoule = 3.1 x 10 ^ 5 joule
Energy to boil all the Earth's water off.
1.26 x 10^20 * 3.1 x 10^5 = 1.26 x 10^26
Therefore, from a starting point with water at 25C, about a half a million years would have been required to boil off all the Earth's water. However, Venus NEVER HAD A COOLER PERIOD FOR THE WATER TO CONDENSE TO LIQUID.
Like I said, let's just use a few brain cells here. Just see where they lead.
Accordingly, I submit that the sources you repeat the words of who claim that Venus suffered a "runaway greenhouse effect" are wrong even if they phrase it as "may have suffered." This seems to be only kowtowing to the climate alarmists and feeding the fear factors. Yet for this strategy to work requires people to ignorantly ignore the fact that Venus is much closer to the Sun.
