Isn’t the relevant planetary response of radiative forcing that due to total CO2 ppm,equivalent, not carbonic gas alone? Is this not already at a level something like 100 ppm less than a doubling from pre-fossil combustion (say 450 ppme), that is if the relatively temporary affect of today’s sulfates emissions are removed?

Does this not seem to indicate the bath is beginning it’s overflow as we have this discussion about turning off the tap?

Perhaps petroleum (etc.) is not a resource of energy after all, but a state of matter.

How and what can a single individual do to partake in the reduction GHG other dran driving less?

I am not sure that my single contribution will resolve the problem but would like to be part of a concerted effort.

On the other hand, CO2 is taken by up by land plants and ocean algae via photosynthesis, where the carbon is converted into sugars using sunlight as the energy source, releasing oxygen in the process. So you can think about the carbon in CO2 getting “sequestered” into the carbohydrates that the plant synthesizes via photosynthesis.

Interestingly, because trees outside of the tropics grow during the spring and shed during autumn, and because the bulk of land mass is in the northern hemisphere, the concentration of CO2 in the air varies depending on the time of the year. This cycle can be seen in the Keeling curve, and the Northern Hemisphere spring dominates the signal.

For a more detailed discussion of the trends in land and ocean carbon uptake, you can look here.