Study: Doubling CO2 from present to 800 ppm has almost no warming effect – ‘CO2 is a bit player’ – ‘Almost undetectable’ impact
Published: August 23, 2021 - International Journal of Atmospheric and Oceanic Sciences
Excerpt: Climate sensitivity to future increases in CO2 concentration is calculated to be 0.50K, including the positive feedback effects of H2O, while climate sensitivities to CH4 and N2O are almost undetectable at 0.06K and 0.08K respectively. This result strongly suggests that increasing levels of CO2 will not lead to significant changes in earth temperature and that increases in CH4 and N2O will have very little discernable impact...This is an unfortunate situation since world governments are implementing ambitious and expensive plans to limit the increase of global temperatures by reduction of CO2 emissions to atmosphere, and to achieve a net zero carbon economy, in the belief that CO2 emissions are the main driver of global temperature increases...
An increase in average Relative Humidity of 1% will result in a temperature increase of 0.03Kelvin. By comparison, CO2 is a bit player.
The effect of doubling CO2 from 400 ppm to 800 ppm plus feedbacks is 0.5°C, reports a new study using HITRAN data. This is only 0.04°C more than the warming from doubled CO2 from 200ppm to 400 ppm (0.46°C). Support JunkScience.com!