Originally Posted by G David Bock
There is a sort of "climate experiment" that might be done. Take a large vacuum vessel(chamber) and fill it with basic "dry" air mixture, starting at 300ppm for CO2 level. Have a heating unit at the bottom and with a rather tall vessel use, measure the amount and rate of heat rising thru to the top. At the top have a heat sink that will absorb the "heat" that has risen. In steps increase the CO2 ratio, maybe in increments of 25 ppm, and measure the change in amount and speed of heat absorption versus transit to the top.
These experiments have already been done, but they only tell you the specific heat of CO2, and the absorption spectrum. They tell you nothing about climate.
The climate is a complex system dominated by THE SUN. The first, and most flawed assumption of climate models, is that the Solar output is constant on time scales longer than the ~22 year Sun Spot cycle.
Physics tells us that systems in dynamic equilibrium (like the Sun) oscillate, and those oscillations have a spectrum of periods on various time scales. (This is why radio waves have side bands...) To ignore this FACT is simply bad science.
Of course, we have no long term measure of the Solar output, and even with our present technology, it is not a trivial measurement to make because the surface of Sol is not of uniform luminosity, and we only have discrete points in near Earth space, to make these measurements with satellites. Toss in a few thousand Solar flares and your measurements get muddled and error rich.
The Earth is so sensitive to the Sun, that a luminosity change of +/-1% is the difference between the entire planet being an ice ball or a desert.
When the primary energy source in your system varies in an unknown fashion, blaming any other minor factors for variations is a joke.
For nearly 30 years I have been working in physics labs conducting experiments on a daily basis. These experiments involve physics machines costing $100,000,000+s. Designing experiments and interpreting the results is what I do. When I look at what is called "climate science" I get a throbbing headache. The science side is so bad, and the doomsday claims so onerous, that it shouldn't be taken seriously.