Hydroclimatology and Solar Explorations

Climate & Weather Representations, Ocean pH and acidification

Global Ocean pH and the Pacific Decadal Oscillation

The ocean thermal oscillations captured by the Pacific Decadal Oscillation (PDO)  [1, 2] have a new parameter to share their gyrations with.  Or at least it seems that way from my initial perspective.  Here is a preliminary chart comparing the time series of global ocean mean pelagic pH that I developed in [3] and the PDO index (as archived at







It looks like a candidate trend of potential value.  Given that the PDO, somewhat like Henry’s Law, relates to both temperature and pressure, maybe this is a quite natural outcome.

1.  Zhang, Y., J.M. Wallace, D.S. Battisti, 1997:   ENSO-like interdecadal variability: 1900-93. J. Climate, 10, 1004-1020

2.  Mantua, N.J. and S.R. Hare, Y. Zhang, J.M. Wallace, and R.C. Francis,1997: A Pacific interdecadal climate oscillation with impacts on salmon production. Bulletin of the American Meteorological Society, 78, pp. 1069-1079

3. pH Time Series/



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