I think some of the data you expected will be available in the following article. Please see the Figure 4-2 [Natural gradients in ocean pH (total scale) across the Pacific, Atlantic, and Indian Ocean basins, showing the natural variation with both depth and latitude, for the period 1990-1998. Data from GLODAP (http://cdiac.esd.ornl. gov/oceans/glodap/Glodap_home.htm); after Feely et al. (submitted)] in the below mentioned article. Particularly pH, salinity and carbonate ion concentration across the Pacific, Atlantic and Indian Ocean is surely available.

Article Impacts of Ocean Acidification on Coral Reefs and Other Mari...

Hello,

I recommend you the latest version of the water quality book of the author RODIER.

Best regards. Y