Re: So where is CO2 going
Prior to the industrial revolution CO2 was sourced and sunk by land and sea and it was all in equilibrium.
Since we've been injecting extra CO2 into the atmosphere the natural environment is capable of sinking some of it, land sinks some and the oceans sink much more as they have a much greater capacity for sinking excess CO2 (and also sinking heat, rather than reflecting it).
Some however, remains in the atmosphere and since the late 1700s this has increased from roughly 270ppm to 393ppm gaining roughly 1.5 to 2ppm per year. It's primarily due to (exponential) economic growth, which despite improvements in efficiency still mean more over all CO2 is produced by us, because our economy is powered by fossil fuels.
The Oceans can sink an incredible amount, but it takes a while for it to dissipate in the currents thus ocean acidity and ocean temperature are projected (and are starting to) rise due to increased CO2.
-cheers from julz (designer of the FIGnition DIY 8-bit Computer).