Hillhater wrote: ↑
Apr 28 2018 10:46pm
But a High school physics lab is not a whole planet system, with all its many other factors and influences.
You are exactly correct. The high school physics lab just proves that CO2 is a greenhouse gas.
Fortunately we have other ways to test the theory. Theory says that with CO2 blocking re-radiation, the lower atmosphere will get warmer and the upper atmosphere will get colder. So we launched satellites to determine whether the additional CO2 was actually blocking re-radiation.
Turns out it was. From Science, the premier periodical for peer-reviewed science:
Global Change in the Upper Atmosphere
J. Laštovička1, R. A. Akmaev2, G. Beig3, J. Bremer4, J. T. Emmert5
Science 24 Nov 2006:
Vol. 314, Issue 5803, pp. 1253-1254
You are currently viewing the summary.
The upper atmosphere is cooling and contracting as a result of rising greenhouse gas concentrations. These changes are likely to affect the orbital lifetimes of satellites.
So we had a theory - and we proved it.
CO2 is certainly increasing, but the cause of that increase is not "proven" , only theorised
Let's say you have a tank that contains 10 gallons of water. It is fed by a 1 gallon per minute source and drained by a 1 gallon per minute drain. So it stays at 10 gallons. You add 10 gallons to it. Afterwards the tank contains 20 gallons of water.
The cause of the tank's increase in volume of water is not "theorized." It is due to you adding water to it. That's not even science. That's basic math.
Now, if you were a tank denier, you could claim all sorts of things. You could claim the tank really doesn't have more water in it, and that this the SCIENCE IS NOT SETTLED! when it comes to measuring volume. You could claim that someone lied about the new measurement. You could claim that there's no such thing as volume. You could claim that before the water hit the tank, a wormhole opened and sucked all the water in, and a second hole opened just below it and dumped exactly ten gallons of water from Alpha Centauri into it - so you could claim it wasn't your fault that there's more water in the tank, even though you added it.
And everyone would (rightly) laugh at you.
and under much debate in the free thinking community.
It is under debate by right wing ideolouges and people who are profiting from the fossil fuel industry. People who have their opinions dictated to them, in other words.
The free thinking community came to the realization that the gigatons of CO2 we are adding to the atmosphere is raising the CO2 concentration.
Im sure you dont need reminding that use of fossil fuels only contributes <4% of all CO2 emmissions.
The atmosphere exchanges about 750 gigatons of CO2 a year. Before 1850 it remained in balance; animals, fires, volcanic activity etc released CO2, plants and chemical processes absorbed it.
Then we came along. Today we are emitting 36 gigatons of CO2 a year. Of that, about half is handled by the existing carbon cycle. The remainder sticks around and results in steadily rising CO2 levels.
Want more proof? When economic downturns result in less increase in carbon burning, CO2 levels stop rising so fast.
Or..is it the CO2 is increasing as a result of the temperature increasing ?
Historically that has been true. This is because, contrary to Saturday morning cartoons, dinosaurs did not drive cars. There was no massive release of CO2 on the scale we are doing it now.
This time, we are the source of the CO2 that has started the warming.