It is not "definitely" getting lower in pH. No one knows if it is getting lower or higher in pH over the period that ocean pH has been measured directly for the same reason that one can't measure directly the change in atmospheric CO2 due to man produced CO2. In both cases the size of the sought after changes are too small (so far) compared to the size of natural variation. There are not enough significant figures attainable in the experimental measurements to discern change due to man's activity from natural change. The oceans are basic. They are not getting more acid. They are getting more basic and less basic depending on time and where you measure. There are only two significant figures in any of these measurements. That's all that's possible with the current technology. Any change due to man would have to be in the first decimal place (less than 0.2 is projected by MODELS over a 100 years!, and lord knows we know how reliable they are!!!) and there is already error in the first decimal place of at least 0.1! So Stop this nonsense.
Nonsense, once again for the umpteenth time, you are wrong, much of the CO2 man is emitting is going into the oceans. That
has to lower PH.
You don't know much about basic science do you? Maybe you stayed at a Holiday Inn?
From wiki:
Ocean acidification is the ongoing decrease in the
pH of the
Earth's oceans, caused by the uptake of
carbon dioxide (CO2) from the
atmosphere.
[2] An estimated 30–40% of the carbon dioxide released by humans into the atmosphere dissolves into oceans, rivers and lakes.
[3][4] To achieve
chemical equilibrium, some of it reacts with the water to form
carbonic acid. Some of these extra carbonic acid
molecules react with a water molecule to give a
bicarbonate ion and a
hydronium ion, thus increasing ocean "
acidity" (
H+ ion concentration). Between 1751 and 1994 surface ocean pH is estimated to have decreased from approximately 8.25 to 8.14,
[5] representing an increase of almost 30% in H+ ion concentration in the world's oceans.
[6][7] Earth System Models project that within the last decade ocean acidity exceeded historical analogs
[8] and in combination with other ocean biogeochemical changes could undermine the functioning of marine ecosystems and many ocean goods and services.
[9]
Increasing acidity is thought to have a range of possibly harmful consequences, such as depressing metabolic rates and immune responses in some organisms, and causing
coral bleaching. This also causes decreasing oxygen levels as it kill off
algae.
Other chemical reactions are triggered which result in a net decrease in the amount of
carbonate ions available. This makes it more difficult for marine calcifying organisms, such as
coral and some
plankton, to form
biogeniccalcium carbonate, and such structures become vulnerable to dissolution.
[10] Ongoing acidification of the oceans threatens
food chains connected with the oceans.
[11][12] As members of the
InterAcademy Panel, 105
science academies have issued a statement on ocean acidification recommending that by 2050, global CO2emissions be reduced by at least 50% compared to the 1990 level.
[13]
, change in ocean pH from 1751 to 1994 under advisement. 