Ocean acidification and temperature

The graph below shows that ocean acidification has dropped from about 8.12 to 8.08 over the last couple decades [ see Vhttps://ocean.si.edu/ocean-life/invertebrates/ocean-acidification ]. 

For a good primer on pH visit [https://www.pmel.noaa.gov/co2/story/A+primer+on+pH]

The diagram below shows that hydrogen ion concentration in seawater 10^-8 moles per liter or 6.022x10²³ (# of molecules per mole) x10^-8 or 6.022x10¹⁵ hydrogen nuclei (protons). 

The Scripps Classroom Connection site [https://earthref.org/SCC/lessons/2013/seawaterchemistry/ ] has some excellent lesson plans for teachers along with useful materials including power point slides. The following slide shows an inverse relationship between dissolved CO2 and pH. CO2 concentrations in this graph are presented in terms of micro moles /kilogram. 

Potential ocean acidification impacts on sea temperature are discussed in the Science note by Scott Johnson [https://arstechnica.com/science/2013/08/ocean-acidification-could-affect-rising-temperatures/] where he notes that changes in atmospheric Sulphur concentration associated with ocean acidification may add an additional 0.1 to 0.76 degree C increase in global temperature by the end of the century [see https://arstechnica.com/science/2013/08/ocean-acidification-could-affect-rising-temperatures/] . This amplification is discussed in the Nature article “Global warming amplified by reduced Sulphur fluxes as a result of ocean acidification” by Katherine Six and others (Nature Climate Change volume 3, pages 975–978, 2013). This results from a reduction in atmospheric Sulphur due to a decrease in dimethylsulphide in the lower pH marine environment.

The rise in global sea surface temperature presented in the EPA document Climate Change Indicators: Sea Surface Temperature [https://www.epa.gov/climate-indicators/climate-change-indicators-sea-surface-temperature]. The article also includes the following global map of sea surface temperature change from 1901 to 2015.