A few excerpts:
Total combined anthropogenic greenhouse gases comprise (12,217 / 370,484) or 3.298% of all greenhouse gas concentrations, (ignoring water vapor).
Total atmospheric carbon dioxide (CO2) — both man-made and natural— is only about 3.62% of the overall greenhouse effect.
Anthropogenic (man-made) Contribution to the “Greenhouse
Effect,” expressed as % of Total (water vapor INCLUDED)”
Carbon Dioxide (CO2) is 3.618% of “Greenhouse Effect” with 3.502% of that natural and 0.117% manmade.
Anthropogenic (man-made) CO2 contributions cause only about 0.117% of Earth’s greenhouse effect, (factoring in water vapor).
Adding up all anthropogenic greenhouse sources, the total human contribution to the greenhouse effect is around 0.28% (factoring in water vapor).
Great info on the site. It confirmed some other data I had.