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Can Hydrographic Data Provide Evidence That the Rate of Oceanic Uptake of Anthropogenic CO2 Is Increasing?

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  • William Carlisle Thacker

Abstract

Predictions of the rate of accumulation of anthropogenic carbon dioxide in the Pacific Ocean near 32°S and 150°W based on the P16 surveys of 1991 and 2005 and on the P06 surveys of 1992 and 2003 underestimate the amount found in the P06 survey of 2009–2010, suggesting an increasing uptake rate. Assuming the accumulation rate to be constant over the two decades, analyses using all five surveys lead to upward revision of the rates based only on the first four. On the other hand, accumulation rates estimated for 2003–2010 are significantly greater than those for 1991–2003, again suggesting an increasing uptake rate. In addressing this question it is important to acknowledge the limitations of the repeat hydrography and consequent uncertainties of estimated accumulation rates.

Suggested Citation

  • William Carlisle Thacker, 2013. "Can Hydrographic Data Provide Evidence That the Rate of Oceanic Uptake of Anthropogenic CO2 Is Increasing?," PLOS ONE, Public Library of Science, vol. 8(8), pages 1-7, August.
    • Handle: RePEc:plo:pone00:0071920
    DOI: 10.1371/journal.pone.0071920
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