The IPCC report is well over 1,000 pages long, but the CO2 warm forcing formula covers a single page and can be easily tested and shown to be a trivial warming effect at the 440 ppm level thus not a concern.
Here is what the doubling of CO2 is postulated to generate,
"Next, here is the radical change in downwelling radiation at the surface from the increase in CO2 that is supposed to be driving the “CLIMATE EMERGENCY!!!” What I’ve shown is the change that in theory would have occurred from the changes in CO2 from 1750 to the present, and the change that in theory will occur in the future when CO2 increases from its present value to twice the 1750 value. This is using the generally accepted (although not rigorously derived) claim that the downwelling radiation change from a doubling of CO2 is 3.7 watts per square metre (W/m2). The purpose is to show how small these CO2-caused changes are compared to total downwelling radiation.
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The changes in downwelling radiation from the increase in CO2 are trivially small, lost in the noise."
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The change even at the doubling level is trivial thus the AGW is worthless to worry over.