[Chondrally (OP)]

I know how to calculate this,  but it really is the million pound question!  How high will the CO2 ppm go over the two year period starting around 2052 when the ppm hits 493 ppm CO2 in the atmosphere and this causes the magnesium carbonate buffer in the ocean to break?  Hint,  it would cause the acidity in the whole ocean to increase,  dropping the pH by .55 pH level over a two year period to about 7.85!  The Calcium Carbonate buffer will break around 1376 ppm CO2 between 2230 and 2240 but that is a long way off and many technological and societal changes will occur by then, hopefully enough to arrest the CO2 increases.  I hope we can arrest them before 2052.  There is still hope!

[syhprum]

I think we will have to learn to live higher CO2 and higher temperatures unless aliens invade and start to control us I cannot see any real progress being made as to the amount of CO2 we pump into the atmosphere