In 1901, Knut Angstrom showed that Arrhenius didn’t know what he was talking about with his global warming theories. CO2 absorption is already nearly saturated, so additional increases in CO2 have little effect.
Arrhenius also ignored H2O in his calculations, which produces most of the greenhouse effect. As a result of his “inadmissable” error, Arrhenius overestimated the effects of CO2 by about 96%.
