Except as I have mentioned, the IPCC only considers man-made climate and refuses to investigate any other possible cause.
That's like a cancer research center investigating tobacco as the only possible cause of cancer, in spite of the fact the evidence shows that DNA, virus, carcinogens and other things cause cancer.
Water vapor.
There is no global warming. The Earth is not warming. The Earth is cooler than all previously 8 recorded Inter-Glacial Periods in the EPICA Ice Core Data.
Plus, they have it backwards. The Earth warms, then CO2 levels increase, not CO2 levels increase then Earth warms.
Do the math.
CO2 absorbs at 2.7 microns, 4.3 microns and 15 microns.
Since Earth does not emit Black Body Radiation at 2.7 microns, we only have to look at 4.3 microns and 15 microns, and we'll apply Wien's Law to both.
Wien's Law T (Temperature) = b / wavelength in micrometers, where "b" is a constant equal to 2,900 um-K.
T = 2,900 um-K / 15 um = 193°K = -112°F
T = 2,900 um-K / 4.3 um = 673.9°K = 753°F
What we can infer from science is that 4.3 microns has far greater energy than 15 microns, however the amount of Black Body Radiation Earth emits at 4.3 microns is minuscule, as this link proves:
https://eesc.columbia.edu/courses/ee...absorption.gif
Water vapor is far more significant. Water vapor is the primary absorber of incoming radiation and the largest and most significant reflector of out-going radiation. Water vapor typically averages 13 TRILLION tons and by weight is far greater than CO2: 0.33% H2O vs 0.04% CO2. In terms of relative humidity, Earth is about 75% at ground level, decreasing to 45% at about 5,000 meters.
That means water vapor is concentrated near the Earth, unlike CO2.
Water vapor absorbs at 5.9, 6.5, 6.9, 7.2, 7.6, 8.2 and 9.6 microns.
Wien's Law:
T = 2,900 um-K / 5.9 um = 491°K = 424°F
T = 2,900 um-K / 6.5 um = 446°K = 343°F
T = 2,900 um-K / 6.9 um = 420°K = 296°F
T = 2,900 um-K / 7.2 um = 402°K = 263°F
T = 2,900 um-K / 7.6 um = 381°K = 226°F
T = 2,900 um-K / 8.2 um = 353°K = 175°F
T = 2,900 um-K / 9.6 um = 302°K = 83°F
As you can see from the graph and from Wien's Law, water vapor is far more powerful than CO2 could ever hope to be and generates far more energy than CO2 ever will.
Water vapor is the driver of climate, not CO2.