Some little exploration of what might happen, but an unfortunate set of eratta on the facts that people need to know.
1. are you measuring C or CO2. the unit of measure makes a difference of 3x.
2. only zero emissions might cause co2 ppm to start to go down
3.. No ice sheet is 5 million years deep. Would be nice if we had bubbles with atmospheric samples that far back.
otherwise. some relation to what challenges might have to be faced, but a little thin.