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Geoscientific Model Development An interactive open-access journal of the European Geosciences Union
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Volume 8, issue 3
Geosci. Model Dev., 8, 485–499, 2015
https://doi.org/10.5194/gmd-8-485-2015
© Author(s) 2015. This work is distributed under
the Creative Commons Attribution 3.0 License.
Geosci. Model Dev., 8, 485–499, 2015
https://doi.org/10.5194/gmd-8-485-2015
© Author(s) 2015. This work is distributed under
the Creative Commons Attribution 3.0 License.

Model description paper 09 Mar 2015

Model description paper | 09 Mar 2015

Improved routines to model the ocean carbonate system: mocsy 2.0

J. C. Orr and J.-M. Epitalon

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Antonov, J. I., Seidov, D., Boyer, T. P., Locarnini, R. A., Mishonov, A. V., Garcia, H. E., Baranova, O. K., Zweng, M. M., and Johnson, D. R.: World Ocean Atlas 2009, vol. 2: Salinity, edited by: Levitus, S., Atlas NESDIS 69, NOAA, US Government Printing Office, Washington DC, 184 pp., 2010.
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.
Bates, N. R., Orchowska, M. I., Garley, R., and Mathis, J. T.: Summertime calcium carbonate undersaturation in shelf waters of the western Arctic Ocean – how biological processes exacerbate the impact of ocean acidification, Biogeosciences, 10, 5281–5309, https://doi.org/10.5194/bg-10-5281-2013, 2013.
Brewer, P. and Peltzer, E.: Limits to marine life, Science, 324, 347–348, https://doi.org/10.1126/science.1170756, 2009.
Caldeira, K. and Wickett, M. E.: Anthropogenic carbon and ocean pH, Science, 425, p. 365, 2003.
Publications Copernicus
Short summary
We provide improved routines to model the ocean carbonate system, i.e., to compute ocean pH and related variables from dissolved inorganic carbon and total alkalinity. These routines (1) rely on the fastest available algorithm to solve the alkalinity-pH equation, which converges even under extreme conditions; (2) avoid common model approximations that lead to errors of 3% or more in computed variables; and (3) account for large pressure effects on subsurface pCO2, unlike other packages.
We provide improved routines to model the ocean carbonate system, i.e., to compute ocean pH and...
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