We have been lied to: Carbon dioxide (CO2) is an alleged ‘well-mixed gas’ also alleged to reside in sufficient quantities high in the atmosphere to cause global warming (via the so-called greenhouse gas effect).
The first damaging fact to the theory: CO2 is actually a heavy gas. It is not ‘well mixed’ in the air as per the glib claim. Just check out the NASA image (below) showing widely varying carbon dioxide concentrations. Indeed, schoolchildren are shown just how heavy CO2 is by way of a simple school lab experiment.
This heavy gas thus struggles to rise and soon falls back to earth due to its Specific Gravity (SG). Real scientists rely on the SG measure which gives standard air a value of 1.0 where the measured SG of CO2 is 1.5 (considerably heavier). Thus, in the real world the warming theory barely gets off the ground.
As shown in Carbon Dioxide Not a Well Mixed Gas and Can’t Cause Global Warming the same principle applies to heat transfer: the Specific Heat (SH) of air is 1.0 and the SH of CO2 is 0.8 (thus CO2 heats and cools faster).
Combining these properties allows for thermal mixing. Heavy CO2 warms faster and rises, as in a hot air balloon. It then rapidly cools and falls. Once it falls it loses any claimed climate impact.
You see, so much of what we have been told about the greenhouse gas mechanism is false. James Moodey wrote an excellent debunk of CO2 pseudo-science. He tells us:
“Proponents [of the greenhouse gas theory] point to scientist John Tyndall for postulating what we now call global warming in his 1861 paper published in “Philosophical Transactions.”
Tyndall’s experiments methodically measured with an electronic galvanometer, the relative heat absorption of various gases, gas vapors and even a few solids. He proved that they absorb heat in the order listed.
Generally, the larger the gas molecule (compound gases), the more heat they absorb with the most heat absorbed by olefiant gas (ethylene).
Although he does not mention carbon dioxide, it might absorb about a third of that amount. He discovered that that these gases absorb less heat as their pressure rises, so he measured at extreme low pressures.
At one point, he generalizes that gas vapors, such as aqueous vapor, absorb roughly 13 times more than dry gases. Solids absorb even more heat. He notes that gases cool in proportion to the absorption with large molecule gases taking longer to cool.
Tyndall leaps a bit with this concept when he hypothesizes the affect on our atmosphere by stating, “to account for different amounts of heat being preserved to the earth at different times” – which we attribute to global warming.”
There is no doubt what he measured exists, but nowhere in John Tyndall’s paper does he add the element of time. Yes, some gases absorb heat, but for how long?
If you ask any climate ‘scientist’ how long CO2 traps heat they are unable to tell you. They certainly can’t claim Tyndall “settled” it. Instead you will find airy-fairy, hand-waving pronouncements like this peach:
“As humans emit greenhouse gases like CO2, the air warms and holds more water vapor, which then traps more heat and accelerates warming.”
You see, they want to convince you that CO2 is trapping heat (like a greenhouse) but then don’t tell you how much and for how long.
In fact, the only scientist to test CO2 absorption / emission in the open atmosphere is Professor Nasif Nahle (Monterrey, Mexico) in his peer-reviewed paper, ‘Determining the Total Emissivity of a Mixture of Gases Containing Overlapping Absorption Bands.’ 
By performing his experiments in the open atmosphere Professor Nahle found:
“Applying the physics laws of atmospheric heat transfer, the Carbon Dioxide behaves as a coolant of the Earth’s surface and the Earth’s atmosphere by its effect of diminishing the total absorptivity and total emissivity of the mixture of atmospheric gases.” [emphasis added]
So much for that ‘greenhouse effect’!
Alexander: numerous scientists (most are climate scientists, or climatologists) below who disagree that humans are to blame for global warming (please click the links and read or listen to what they have to say, then make up your own mind), and some go as far as calling it “pseudoscience” or outright a “scam”:
I would also like to add that none of the predictions made by Al Gore in his documentary, “An Inconvenient Truth”, have come true. His predictions/claims were based on the scientific predictions about “global warming” made by what some call “climate alarmists“, and “exaggerated” computer models.
Unlike academics playing with computers, applied scientists like Nahle and measurement engineers, who must be correct or buildings would catch fire, use four aspects of physics to measure gases: Pressure (Boyles Law), Temperature (Charles Law), Super-compressibility and Specific Gravity. Charles Law and Specific Gravity should be at the center of any analysis of Global Warming.
But take a look at any climate ‘science’ publication explaining how they quantify and explain their mechanism of carbon dioxide’s ‘heat trapping’ in the climate and you will only read about radiation effects, nothing at all on those essential laws that chemical science experts rely on. Anyway, a greenhouse works by blocking out cooling convection, not by trapping radiation.
And the greenhouse gas theory is all about radiation. But radiation is not the principle method of heat transport in a gaseous environment like earth’s atmosphere. Here. it is convection and conduction that carry heat around the system. No wonder climate computer models fail.
So, does carbon dioxide trap and retain heat? No, although it cools more slowly than some other gases, it absorbs some amount of heat and quickly cools the same amount when the heat source is removed. Does it rise up in the atmosphere? No, it does the opposite. It sinks.
It is well known that CO2 pools in the lower atmosphere – it is heavy and sinks to the ground where it forms large concentrations (e.g as carboniferous limestone).
Geologists know this all too well. They can point us to innumerable examples e.g. those prehistoric limestone deposits on ocean beds which gave the south coast of Britain its marvellous white cliffs of Dover (see image).
As Moodey goes on to tell us:
Charles Law precisely quantifies the volume expansion of gas when heated at each degree of temperature. Likewise, as gas cools its volume shrinks precisely the same.
Our modern instruments measure instantaneous changes in volume and temperature. This does the same as John Tyndall’s instrument, except we can measure a slight change in volume with each degree of temperature.
By my experience with this, I estimate that gases lose the absorbed temperature very rapidly when the heat source is removed.
Specific gravity is the weight of a gas compared with air. Carbon Dioxide has a specific gravity of 1.52. It is about one and a half times heavier than air.
It is the same weight as propane and anyone who uses propane knows it to be very heavy. Carbon dioxide sinks into our storm drains and into the ground like a puddle of water.
Now back to some Geology:
And we know carbon dioxide forms into insoluble carbonates that will eventually be washed into the ocean and settle on the ocean floor. Just as well it does. A high carbonate content in the ocean has been a godsend to life.
Dissolved carbonates in seawater provide an efficient chemical buffer to various processes that change the properties of seawater.
For instance, the addition of a strong acid such as hydrochloric acid (naturally added to the ocean by volcanism), is strongly buffered by the seawater carbonate system.
Marine biologists and oceanographers, unlike most climate ‘scientists’, know that Phytoplankton have always sucked CO2 out of the sky, then dumps to ocean floor. 
This is the carbon cycle in operation – heavier organic carbon settling down to intermediate and deep waters.
Earth’s oceans and rains serve as a go-between to transport the carbon back… and free the CO2 gas which makes its way back up to the surface through volcanoes. 
It is sensible to see dispersion of CO2 via volcanic eruptions (and the very tiny human emissions of CO2) as fertilization of the land fauna and flora.
The inconvenient truth for global warming alarmists is that NASA finds that the rise in atmospheric CO2 over the last 35 years “represents an increase in leaves on plants and trees equivalent in area to two times the continental United States.” 
If NASA is correct, then we need more carbon dioxide in the atmosphere, not less. Check the graph below and follow the blue line to see that life on earth has thrived on CO2 concentrations at 3,000 ppm, far higher than today’s levels of about 400 ppm (circled):
And if you think like a geologist and not like a climate ‘scientists’ and look back in the history of time you see the atmosphere had very large amounts of carbon dioxide in it. Today we have got less than 0.4%.
So where did that carbon dioxide go to?
It went into limestone, chalk, shells and life. All land-based lifeforms have been sequestering carbon for ONLY two and a half billion years. And all that CO2 that is supposed to turn the oceans more acidic?
Pure nonsense because even NOAA scientists admit in private that they can’t name any place affected by ocean acidification. And more than 99% of earth’s FREE CO2 is already in the ocean waters.
If only those self-absorbed climate ‘scientists’ would speak to chemical scientists. All that Calcium Carbonate comes from the precipitation reaction of Calcium Hydroxide in the ocean with CO2 using the reaction Ca(OH)2 + CO2 -> CaCO3 + H20.
For example, shellfish need CO2 from the ocean to make their shells and control the conditions for PH, Temperature and Ion Concentration and they bind the crystals that form in a protein matrix for strength.
Shellfish are utterly unaffected by the piddling change in the ocean from being a base of 8.3 to being a base of PH 8.29 that might happen due to manmade CO2.
Our planet has been degassing carbon dioxide since it first formed four and a half billion years ago and now we are at a dangerously low level. The dumbest thing nations can do is permit scrubbing CO2 from the air (carbon sequestration).
As Professor Nahle found with his open air experiments:
“The general conclusion is that by adding any gas with total emissivity / absorptivity lower than the total emissivity/absorptivity of the main absorber / emitter in the mixture of gases makes that the total emissivity / absorptivity of the mixture of gases decreases.
In consequence, the carbon dioxide and the oxygen at the overlapping absorption spectral bands act as mitigating factors of the warming of the atmosphere, not as intensifier factors of the total absorptivity / emissivity of the atmosphere.”
Indeed, even with some slight cooling observed, the affect of carbon dioxide on the temperature of our atmosphere is not even measurable as the content is so tiny. Note that during our most dramatic industrial growth from 1950 to 1980, our atmosphere cooled.
In fact putting co2 into the air is saving the planet. If the industrial age did not occur for another 100 million years, what would the co2 ppm in air be then? The danger is without humans taking steps to put more carbon dioxide into the air then life as we know it could end.
Source: Principia-Scientific.org / Reference:
 Nahle, N., ‘Determining the Total Emissivity of a Mixture of Gases Containing Overlapping Absorption Bands,’ Biocab.org [.pdf]
 Lionel Guidi, et al x 64 names (2015) Plankton networks driving carbon export in the oligotrophic ocean. Nature, 2016; DOI: 10.1038/nature16942
 ‘Marine barite: Recorder of variations in ocean export productivity‘ page 698, Fig 6).
 Samson Reiny, ‘Carbon Dioxide Fertilization Greening Earth, Study Finds,’ NASA.gov (accessed online: January 30, 2017)