
Originally Posted by
randerizer
No, the numbers he's using are pretty close to the same ones you are using. 7/150 ~ 4.67%, the NOAA number of combined FF and deforestation is 4.5%. It's not like the rain and photosynthetic processes, etc., are SELECTIVE in which CO2 they take out of the atmosphere. So really, only 4.x% of the 3gt net increase in CO2 in the atmosphere can be attributed to anthropogenic production.
What evidence suggests that:
1) The carbon cycle is in "long-term" balance, meaning that it roughly equals out every year or even on a timescale judged in human lifetimes? The evidence presented suggests that it is balanced over a period of ~ 100k years.
If you were going to do an instantaneous balance on the CO2 in the atmosphere, how much would you find at any point in time?
Why do you suggest that there is an upper limit to the sinking ability of the atmosphere, and why does it not increase as a function of CO2 atmospheric concentration, temperature, etc?