What the heck are they talking about? I realize the ocean is one big solution of water and salt, along with a lot of other materials in smaller proportions. However, it is not entirely homogeneous. Solutes are added at a lot of locations, and localized acidification such as they are discussing here is not necessarily global. And I’m not sure that carbon dioxide is even the substance that most drives acidification. There are nitrogen and sulfur, for example. Carbon dioxide is weakly acidic anyway.
This is just another of those new evidences of man-caused pollution caused by burning hydrocarbon fuels. Instead of causing global warming which will raise the levels of the ocean by three feet by the end of the century, it will cause the ocean to be two times as acidic by the end of the century.
Of course, these end of the century esimations assume that rates will somehow remain unchanged, and that there are no other cycles at work.
Such arrogance to think that the planet even gives a rats A$$ about the big headed apes that, for now, inhabit its’ surface.