So, even though CO2 can decline quite significantly in the face...

So, even though CO2 can decline quite significantly in the face of increasing emissions during the Northern Hemisphere summer, the Co2 will only slowly dissipate over centuries - so how does that work? i'm intrigued, because it completely flies in the face of the chart I put up which shows a very sharp yearly decline, even with steadily increasing emissions. Do the sequestering forests of the Northern Hemisphere just know when we stop producing CO2 completely and they will stop sequestering so quickly? Is that what you are saying will happen? Thats seems to be what you have said