pH in Oceans

Posted by Frank Lansner (frank) on 7th February, 2010
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IPCC AR4, chapter 5:

In the last 30 years of rise in atmospheric concentration the pH has decreased from approximately 8,12 to around 8,09. – And on the IPCC data it appears that pH has mostly stagnated since year 2000 despite human CO2 emissions.


Again, Oceanic pH data from Hawaii, on the dotted line the stagnation in evident:



The total CO2 storage :



In all 40.000 Gt CO2. For comparison, humans add around 2 gt CO2 per year. Human induced change in the CO2 amount in oceans thus is limited and one should not forget that there are many other natural factors affecting pH than CO2.


”Ocean acidification”: http://www.seafriends.org.nz/issues/global/acid2.htm



Last changed: 14th November, 2011 at 12:46:58



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