CHAPTER 1 • The Carbonate System in Marine Environments
25
in Fig. 1.12. The gross trends in pH are those expected from the surface Pco 2 (the higher
the Pco 2 the lower the pH and vice versa). The values are lower in upwelling waters in
the Equatorial regions and are proportional to temperature. In closed or small bodies
of water, the pH can show diurnal variations and cycle between 8.2 and 8.9. The de8.20
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