Articles | Volume 12, issue 20
https://doi.org/10.5194/bg-12-6017-2015
https://doi.org/10.5194/bg-12-6017-2015
Research article
 | 
22 Oct 2015
Research article |  | 22 Oct 2015

Quantifying the influence of CO2 seasonality on future aragonite undersaturation onset

T. P. Sasse, B. I. McNeil, R. J. Matear, and A. Lenton

Related authors

Historical reconstruction of ocean acidification in the Australian region
Andrew Lenton, Bronte Tilbrook, Richard J. Matear, Tristan P. Sasse, and Yukihiro Nojiri
Biogeosciences, 13, 1753–1765, https://doi.org/10.5194/bg-13-1753-2016,https://doi.org/10.5194/bg-13-1753-2016, 2016
Short summary
Data-based estimates of the ocean carbon sink variability – first results of the Surface Ocean pCO2 Mapping intercomparison (SOCOM)
C. Rödenbeck, D. C. E. Bakker, N. Gruber, Y. Iida, A. R. Jacobson, S. Jones, P. Landschützer, N. Metzl, S. Nakaoka, A. Olsen, G.-H. Park, P. Peylin, K. B. Rodgers, T. P. Sasse, U. Schuster, J. D. Shutler, V. Valsala, R. Wanninkhof, and J. Zeng
Biogeosciences, 12, 7251–7278, https://doi.org/10.5194/bg-12-7251-2015,https://doi.org/10.5194/bg-12-7251-2015, 2015
Short summary
A neural network-based estimate of the seasonal to inter-annual variability of the Atlantic Ocean carbon sink
P. Landschützer, N. Gruber, D. C. E. Bakker, U. Schuster, S. Nakaoka, M. R. Payne, T. P. Sasse, and J. Zeng
Biogeosciences, 10, 7793–7815, https://doi.org/10.5194/bg-10-7793-2013,https://doi.org/10.5194/bg-10-7793-2013, 2013
A novel method for diagnosing seasonal to inter-annual surface ocean carbon dynamics from bottle data using neural networks
T. P. Sasse, B. I. McNeil, and G. Abramowitz
Biogeosciences, 10, 4319–4340, https://doi.org/10.5194/bg-10-4319-2013,https://doi.org/10.5194/bg-10-4319-2013, 2013

Related subject area

Biogeochemistry: Open Ocean
Marine snow morphology drives sinking and attenuation in the ocean interior
Yawouvi Dodji Soviadan, Miriam Beck, Joelle Habib, Alberto Baudena, Laetitia Drago, Alexandre Accardo, Remi Laxenaire, Sabrina Speich, Peter Brandt, Rainer Kiko, and Stemmann Lars
Biogeosciences, 22, 3485–3501, https://doi.org/10.5194/bg-22-3485-2025,https://doi.org/10.5194/bg-22-3485-2025, 2025
Short summary
An upper-mesopelagic-zone carbon budget for the subarctic North Pacific
Brandon M. Stephens, Montserrat Roca-Martí, Amy E. Maas, Vinícius J. Amaral, Samantha Clevenger, Shawnee Traylor, Claudia R. Benitez-Nelson, Philip W. Boyd, Ken O. Buesseler, Craig A. Carlson, Nicolas Cassar, Margaret Estapa, Andrea J. Fassbender, Yibin Huang, Phoebe J. Lam, Olivier Marchal, Susanne Menden-Deuer, Nicola L. Paul, Alyson E. Santoro, David A. Siegel, and David P. Nicholson
Biogeosciences, 22, 3301–3328, https://doi.org/10.5194/bg-22-3301-2025,https://doi.org/10.5194/bg-22-3301-2025, 2025
Short summary
Ocean alkalinity enhancement in an open-ocean ecosystem: biogeochemical responses and carbon storage durability
Allanah Joy Paul, Mathias Haunost, Silvan Urs Goldenberg, Jens Hartmann, Nicolás Sánchez, Julieta Schneider, Niels Suitner, and Ulf Riebesell
Biogeosciences, 22, 2749–2766, https://doi.org/10.5194/bg-22-2749-2025,https://doi.org/10.5194/bg-22-2749-2025, 2025
Short summary
Relationships between the concentration of particulate organic nitrogen and the inherent optical properties of seawater in oceanic surface waters
Alain Fumenia, Hubert Loisel, Rick A. Reynolds, and Dariusz Stramski
Biogeosciences, 22, 2461–2484, https://doi.org/10.5194/bg-22-2461-2025,https://doi.org/10.5194/bg-22-2461-2025, 2025
Short summary
Inadequacies in the representation of sub-seasonal phytoplankton dynamics in Earth system models
Madhavan Girijakumari Keerthi, Olivier Aumont, Lester Kwiatkowski, and Marina Levy
Biogeosciences, 22, 2163–2180, https://doi.org/10.5194/bg-22-2163-2025,https://doi.org/10.5194/bg-22-2163-2025, 2025
Short summary

Cited articles

Archer, D., Kheshgi, H., Maier, and Reimer, E.: Multiple timescales for neutralization of fossil fuel CO2, Geophys. Res. Lett., 24, 405–408, https://doi.org/10.1029/97gl00168, 1997.
Aumont, O. and Bopp, L.: Globalizing results from ocean in situ iron fertilization studies, Global Biogeochem. Cy., 20, GB2017, https://doi.org/10.1029/2005gb002591, 2006.
Bednarsek, N., Tarling, G. A., Bakker, D. C. E., Fielding, S., Jones, E. M., Venables, H. J., Ward, P., Kuzirian, A., Leze, B., Feely, R. A., and Murphy, E. J.: Extensive dissolution of live pteropods in the Southern Ocean, Nat. Geosci., 5, 881–885, https://doi.org/10.1038/ngeo1635, 2012.
Berner, R. A. and Honjo, S.: Pelagic Sedimentation of Aragonite: Its Geochemical Significance, Science, 211, 940–942, https://doi.org/10.1126/science.211.4485.940, 1981.
Bopp, L., Resplandy, L., Orr, J. C., Doney, S. C., Dunne, J. P., Gehlen, M., Halloran, P., Heinze, C., Ilyina, T., Séférian, R., Tjiputra, J., and Vichi, M.: Multiple stressors of ocean ecosystems in the 21st century: projections with CMIP5 models, Biogeosciences, 10, 6225–6245, https://doi.org/10.5194/bg-10-6225-2013, 2013.
Download
Short summary
Our results show that accounting for oceanic CO2 seasonality is crucial to projecting the future onset of critical ocean acidification levels (i.e. aragonite undersaturation). In particular, seasonality will bring forward the initial onset of month-long undersaturation by a global average of 17 years. Importantly, widespread undersaturation is projected to occur once atmospheric CO2 reaches 496ppm in the North Pacific and 511ppm in the Southern Ocean, independent of emissions scenario.
Share
Altmetrics
Final-revised paper
Preprint