CHAPTER 1 • The Carbonate System in Marine Environments
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2320
Atlantic
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ization of TA accounts for changes in HCOl" (a major component of TA) due to changes
in salinity. The values of NTA are higher in colder waters and nearly the same in Atlantic and Pacific oceans. The NTA values for most surface waters is 2300 !lmol kg -I.
This is related to the near conservative behavior of HCOl" in seawater. The values are
higher in polar waters (TA = 2380 !lmol kg-I). The higher values in polar regions are
due to the outcropping and upwelling of colder deep waters that have higher TA.
A profile of NTA values in the North Atlantic and North Pacific oceans are shown
in Fig. 1.15. The surface values in both oceans are the same, and the NTA in deep wa-