The ocean surface and the atmosphere are in a near-equilibrium
condition--the pH of the ocean and the CO2 concentration of the air are
closely coupled. The consequence is that the ocean is getting more acidic
with rising atmospheric CO2. If we raise the pH of the ocean surface, the
atmospheric CO2 problem goes away.
Interesting fact (recognized by many): More than 99.9% of the earth
is basic. Only 0..1% or less is acidic and needs neutralization (the
biosphere). Can't we find a manageable way to apply enough base to the
problem? (I imagine it should take dispersal of about 1000 cu.km of
ultramafics to do the job, but I am an optimist.)
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