Study: Doubling CO2 from present to 800 ppm has almost no warming effect – ‘CO2 is a bit player’ – ‘Almost undetectable’ impact

By: - Climate DepotSeptember 7, 2021 1:57 PM

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!