Yep. And rapidly rising. The 15 minor gases are an important factor, also. Note they have risen by a factor of 3 since 1979.
As we observe the warming of the Arctic Ocean, our rapidly increasing additions to the GHGs in the atmosphere, we cannot help but wonder at what point the shallow clathrates in the Arctic are going to show us how to really ramp up the figures. Yet this is supposed to be a political issue. Kind of like politisizing an oncoming freight train.
Has it ever ponder upon you the earth has it's own self correcting feedback mechanism and no matter what we throw at it, it will determine the outcome. It's pretty arrogant to assume humans can over come mother nature; can't stop a tornado, can't stop a hurricane, and can't stop an earthquake.
There's a big yellow thing in the sky from dusk to dawn that has more of an effect on our climate than your self induce paranoia. Peer review after peer review can't quit get those climate models correct, FACT. If they do, it's only for a short while before mother nature throws another monkey wrench into the works and the peer review experts are perplexed as to why...ah what happened?
Demonstration of pure ignorance. You might just check out what happened during the P-T extinction.
All you warmers out thar are the only ones being duped into the falsehoods and lies that merely exhaling C02 causes global whining but last time I checked it was referred to as plant food. So make up your friking mind what story you want to tell.
As I mentioned, mother nature has it's own feed back system whether you like it or not. It will dictate the terms not you. You warmers are just a passenger so get over yourself. Maybe you should be focusing your energy on the earth sun system and realize the sun is 109 times the mass of the earth and the sun has quit a bit of activity in the area of elector-magnetism as compared to earth. It's this magnetism that allows earth 2 sustain an atmosphere conducive/supportive to maintain life on earth. and while your at it look up Milankovitch cycles.
Well, if it was up to WATER VAPOR alone,, which is in the atmosphere a
avg of 9 days--- we would be living on a ice cube.
While, The atmospheric lifetime of CO2 is estimated of the order of 30-95 years.
What does that mean; well lets just say that one molecule remains within the system 30-95 years. The natural co2 is balanced CURRENTLY...IT go into Atmosphere and then of course get locked up in the oceans, plants, ect in away that don't add into the climate system at this moment. Only being released and captured as the oceans warm and cool throughout the past million years from 175-300 ppm.
This is what the ice sheets in antarctic teaches us.
Lets see
C=natural green house emissions...This is currently in balance(or close to it as some of the sinks are starting to change
)
So C+- warming or cooling that effects it, but no more then 100 ppm over 50-60 thousand years the past 2 million years.
Then we have the human produced emissions...Well lets just say that the system is clogged up with the natural and can't handle more then half of this. This is hC(human co2).
Now I hope you can understand...
Well, onto more pressing matters. Water vapor has a avg atmospheric life of
9 days and isn't uniformed, while co2 lets say one molecule has a 30 year life and is within 2-3 ppm
shown to be pretty uniformed throughout the climate system. Considering without the green house effect the earth would be -30c(59f) colder then now(AKA a ice ball floating through space) you'll have to ask your self what is going to get the climate more stable...
Why do I say that?
Well, lets imagine if water vapor is the only green house that causes warming on this planet for a second.
Lets say that 4 whole percent of our atmosphere is water vapor(NOT UNIFORMED in real life), we're peacefully heading around the star with a constant solar output for all of earth's history with a avg global temperature of 58c, which would keep our environment for the time being somewhat liveable. One year the sun drops its tsi by 5 percent on us! What will happen you ask...Well, we will get
less energy going into the climate system, which will evaporate less water vapor...In turn cause a super negative feed back of less and less water vapor. This sucker would happen in under a few months to. On and on and on until earth has become a ice ball floating through space!
Co2 stays for at least 30 years as a molecule within the system. Not only that as the system is clogged like a sink it is over throwing on us and history through the ice cores tell us it could take thousands of years worth of rock weathering, ect to remove it out of the climate system.
Yes, if earth just had the non-green house gases with its atmosphere made of them it would be a ice ball floating through space. Yes, the density of the atmosphere would cause warmth at the surface, but not nearly enough to stop it from going ice ball.
Earth is to far away from the sun for its atmospheric density to warm it much with the energy it gets from the sun...We use these
tools to estimate all the extrasolar planets out there temperatures. Either it is right and we are going to find a liveable planet out there and go to it or we're wrong and we will find out it is just a rock floating through space.
Greenhouse gas - Wikipedia, the free encyclopedia
