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How much does CO2 contribute to the greenhouse effect Howard Cork Hayden March 8, 2022 Here’s the greenhouse effect due to CO2 at 400 ppmv:
Here’s the total greenhouse effect at present:
The CO2 area is ca. 20% of the total area. I analyzed the Happer paper by weighing areas. Total greenhouse effect from all greenhouse gases (their data) - 150 W/m2. Due to CO2 from natural sources and fossil fuels - 30 W/m2. Due to CO2 from fossil fuels is less than 20 - W/m2. 1