According to Tim Flannery’s in his recent eye opening book, Atmosphere of Hope, “If we continue emitting CO2 at the same rate, by 2100 ocean acidity will increase by about 150%, a rate that has not been experienced on earth for at least 400,000 year.”
A little background: The oceans absorb CO2 and it reacts to form carbonic acid. Too much of this increases the water’s pH. Atmosphere of Hope explains that 200 years ago the pH of the ocean’s surface was 8.2.
Today it is 8.1.
Big deal, a 0.1 change!
But acidity is measured on a logarithmic scale which means that the oceans are 30% more acidic then before the Industrial Revolution.
Now that’s something to ponder.