Brilliant! Thank you!

The current CO2 concentration is a consequence of the time delay (about 800 years) between temperature rise and CO2 levels, caused by the thermal inertia of the oceans, it is a consequence of the Mediaeval Warm Period, and any current action by human beings will have absolutely no effect. The CO2 was once dissolved in the oceans, and out-gasses when the temperature rises. Anybody who has ever opened a warm bottle of pop will be aware of this.