Articles | Volume 11, issue 22
https://doi.org/10.5194/bg-11-6293-2014
https://doi.org/10.5194/bg-11-6293-2014
Research article
 | 
21 Nov 2014
Research article |  | 21 Nov 2014

Temporal changes in surface partial pressure of carbon dioxide and carbonate saturation state in the eastern equatorial Indian Ocean during the 1962–2012 period

L. Xue, W. Yu, H. Wang, L.-Q. Jiang, L. Feng, L. Gao, K. Li, Z. Li, Q. Wei, and C. Ning

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Allen, G. R. and Adrim, M.: Coral reef fishes of Indonesia, Zool. Stud., 42, 1–72, 2003.
Álvarez, M., Lo Monaco, C., Tanhua, T., Yool, A., Oschlies, A., Bullister, J. L., Goyet, C., Metzl, N., Touratier, F., McDonagh, E., and Bryden, H. L.: Estimating the storage of anthropogenic carbon in the subtropical Indian Ocean: a comparison of five different approaches, Biogeosciences, 6, 681–703, https://doi.org/10.5194/bg-6-681-2009, 2009.
Bates, N. R.: Interannual variability of the oceanic CO2 sink in the subtropical gyre of the North Atlantic Ocean over the last 2 decades, J. Geophys. Res., 112, C09013, https://doi.org/10.1029/2006JC003759, 2007.
Bates, N. R., Pequignet, A. C., and Sabine, C. L.: Ocean carbon cycling in the Indian Ocean: 1. Spatiotemporal variability of inorganic carbon and air–sea CO2 gas exchange, Global Biogeochem. Cy., 20, GB3020, 2006.
Bates, N. R., Best, M. H. P., Neely, K., Garley, R., Dickson, A. G., and Johnson, R. J.: Detecting anthropogenic carbon dioxide uptake and ocean acidification in the North Atlantic Ocean, Biogeosciences, 9, 2509–2522, https://doi.org/10.5194/bg-9-2509-2012, 2012.
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A mean rate of increase in sea surface partial pressure of carbon dioxide and decrease in carbonate saturation state in the eastern equatorial Indian Ocean, a CO2 source to the atmosphere, during the 1962–2012 period was determined. These changes were most likely associated with the increasing atmospheric CO2 concentration, and the transport of accumulated anthropogenic CO2 from a CO2 sink region via basin-scale ocean circulations.
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