In case anyone wants to actually try to appear intelligent and do a little research, go find various journals describing the comparison of our atmosphere and those of Venus and Mars.
I'm not going to waste time re-explaining what is readily available for anyone who actually might care to demonstrate a yearning to learn something, instead of simply holding onto the preconceived and ill-formed notions they have kept closely guarded.
There are many factors at play when it comes to average global and regional climates and temperatures: variables such as land-mass configuration amongst the seas; greenhouse gas ratios and mass; the rate of positive or negative gas exchange; solar cycles; stability of salt-concentration in the oceans, and the stability of the salt sinks and oceanic undersea currents.
Those variables all play a role in the overall system, you change one you risk changing them all (though not all can be effected by the others, such as land-mass configuration, as the tectonic plates couldn't give a shit about what the rest of the world is doing).
More importantly, that system is only stable when the balances of all life is stable. One must be moronic if one thinks what we humans are doing absolutely nothing to the overall system.
If we simply ate and shit and did what we had to do to eat and shit, in the same way all animals go about the day, we wouldn't be having this conversation. You see, we humans are doing something that no other part of the Earth is doing, and it wouldn't be happening if we weren't doing such. We burn stored carbon, and release carbon that would not get released without the likes of us. If one cannot see how this is the case, then you are indeed ignorant and a fool.
What will the impact be? It all depends on how the overall system absorbs the changes in the one variable. One is correct when stating no climatology model accurately shows what will happen, or what the safe range is for any one variable.
There is a slight problem in certain models: no one is exactly taking into consideration that the "OK" range for each variable has to change, when other parts of the system change. What was High then might be normal now, considering the shape of the oceans and location of land-masses is different at every moment in history; those two key factors play a large role in the overall average climates the world over.
Does that mean we can sit back, relax, and continue to go about our lives, in ways that are very unnatural and have a definitive impact on global system variables?
Due to the fact that we cannot accurately say, one way or the other, just what will happen climate-wise in the future, does that mean we shouldn't try and shape it the best we can?
We cannot say the future will be colder or warmer, because historical cycles are not a perfect source to study since the geographical shape of the Earth's surface is never stable. That one fact means the "stable/preferred" state of the global climate - that is to say the "default" once any corrections are made by the system - cannot be accurately predicted based on historical findings.
Currently it is argued we are still in an ice-age of sorts, considering half of North America was previously marshland or hundreds of feet underwater at one point in time, with minimal or zero ice at the poles. Permanent ice-caps aren't "normal" when looking through history, and that makes many suspect the natural cycle means they have to disappear eventually.
Essentially, we should strive to change the variables as minimal as possible. By not doing
anything about our release of carbon (entirely unnatural carbon release), we are taking a higher risk with our future than necessary.
It's kind of comical we so often ignore the future, and put it in the hands of those who will live in the future, instead of trying to act maturely in the present and try and do something
for the future, instead of only for us in the present. Kind of selfish, isn't it?
I'm not saying we have to abandon everything we do, because that wouldn't be very human, now would it? We're unnatural beasts, and stubborn little shits, we're going to have our way or die in flames trying to uphold our way, and that's the way it should be. When the alternative is living like the rest of the primates the world over, it's not hard to make such a statement.
For the future, we need to find ways of upholding the basic ideas of what we have, but possibly changing them to be less environmentally destructive. Not abandoning cars and power plants, but slowly changing them, making cleaner energy, and/or finding ways to unnaturally sequester the unnatural levels of greenhouse gases.
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