World Library  

Add to Book Shelf
Flag as Inappropriate
Email this Book

Calcium Carbonate Production Response to Future Ocean Warming and Acidification : Volume 8, Issue 6 (13/12/2011)

By Pinsonneault, A. J.

Click here to view

Book Id: WPLBN0004005737
Format Type: PDF Article :
File Size: Pages 35
Reproduction Date: 2015

Title: Calcium Carbonate Production Response to Future Ocean Warming and Acidification : Volume 8, Issue 6 (13/12/2011)  
Author: Pinsonneault, A. J.
Volume: Vol. 8, Issue 6
Language: English
Subject: Science, Biogeosciences, Discussions
Collections: Periodicals: Journal and Magazine Collection, Copernicus GmbH
Publication Date:
Publisher: Copernicus Gmbh, Göttingen, Germany
Member Page: Copernicus Publications


APA MLA Chicago

Galbraith, E. D., Schmittner, A., Matthews, H. D., & Pinsonneault, A. J. (2011). Calcium Carbonate Production Response to Future Ocean Warming and Acidification : Volume 8, Issue 6 (13/12/2011). Retrieved from

Description: Department of Geography, Planning and Environment, Concordia University, 1455 de Maisonneuve Blvd W., Montreal, QC, H3G 1M8, Canada. Anthropogenic carbon dioxide (CO2) emissions are acidifying the ocean, affecting calcification rates in pelagic organisms and thereby modifying the oceanic alkalinity cycle. However, the responses of pelagic calcifying organisms to acidification vary widely between species, contributing uncertainty to predictions of atmospheric CO2 and the resulting climate change. Meanwhile, ocean warming caused by rising CO2 is expected to drive increased growth rates of all pelagic organisms, including calcifiers. It thus remains unclear whether anthropogenic CO2 will ultimately increase or decrease the globally-integrated pelagic calcification rate. Here, we assess the importance of this uncertainty by introducing a variable dependence of calcium carbonate (CaCO3) production on calcite saturation state (ΩCaCO3) in the University of Victoria Earth System Climate Model, an intermediate complexity coupled carbon-climate model. In a series of model simulations, we examine the impact of this parameterization on global ocean carbon cycling under two CO2 emissions scenarios, both integrated to the year 3500. The simulations show a significant sensitivity of the vertical and surface horizontal alkalinity gradients to the parameterization, as well as the removal of alkalinity from the ocean through CaCO3 burial. These sensitivities result in an additional oceanic uptake of carbon when calcification depends on ΩCaCO3 (of up to 13 % of total carbon emissions), compared to the case where calcification is insensitive to acidification. In turn, this response causes a reduction of global surface air temperature of up to 0.4 °C in year 3500, a 13 % reduction in the amplitude of warming. Narrowing these uncertainties will require better understanding of both temperature and acidification effects on pelagic calcifiers. Preliminary examination suggests that alkalinity observations can be used to constrain the range of uncertainties and may exclude large sensitivities of CaCO3 production on ΩCaCO3.

Calcium carbonate production response to future ocean warming and acidification

Gent, P. R. and McWilliams, J. C.: Isopycnal mixing in ocean circulation models, J. Phys. Oceanogr., 20(1), 150–155, 1990.; Archer, D.: A data-driven model of the global calcite lysocline, Global Biogeochem. Cy., 10(3), 511–526, 1996.; Andersson, A. J., Mackenzie F. T., and Lerman, A.: Coastal ocean CO2-carbonic acid-carbonate sediment system of the Anthropocene, Global Biogeochem. Cy., 20(1), GB1S92, doi:10.1029/2005GB002506, 2006.; Barker, S., Higgins, J. A., and Elderfield, H.: The future of the carbon cycle: review, calcification response, ballast and feedback on atmospheric CO2, Philos. T. R. Soc. A, 361(1810), 1977–1998, 2003.; Cao, L. and Caldeira, K.: Atmospheric CO2 stabilization and ocean acidification, Geophys. Res. Lett., 35(19), L19609, doi:10.1029/2008GL035072, 2008.; Cao, L., Caldeira, K., and Jain, A. K.: Effects of carbon dioxide and climate change on ocean acidification and carbonate mineral saturation, Geophys. Res. Lett., 34(5), L05607, doi:2006GL028605, 2007.; Caldeira, K. and Wickett, M. E.: Ocean model predictions of chemistry changes from carbon dioxide emissions to the atmosphere and ocean, J. Geophys. Res.-Oceans, 110, C09S04, doi:10.1029/2004JC002671, 2005.; Cox, P. M.: Description of the TRIFFID dynamic global vegetation model, Hadley Center Technical Note 24, Met Office, Exeter, UK, 2001.; Fabry, V. J., Seibel, B. A., Feely, R. A., and Orr, J. C.: Impacts of ocean acidification on marine fauna and ecosystem processes, ICES J. Mar. Sci., 65, 414–432, 2008.; Falkowski, P., Scholes, R. J., Boyle, E., Canadell, J., Canfield, D., Elser, J., Gruber, N., Hibbard, K., Högberg, P., Linder, S., Mackenzie, F. T., Moore III, B., Pendersen, T., Rosenthal, Y., Seitzinger, S., Smetacek, V., and Steffen, W.: The global carbon cycle: a test of our knowledge of earth as a system, Science, 290(5490), 291–296, 2000.; Feely, R. A., Sabine, C. L., Lee, K., Berelson, W., Kleypas, J., Fabry, V. J., Millero, F. J.: Impact of anthropogenic CO2 on the CaCO3 system in the oceans, Science, 305(5682), 362–366, 2004.; Denman, K. L., Brasseur, G., Chidthaisong, A., Ciais, P., Cox, P. M., Dickinson, R. E., Hauglustaine, D., Heinze, C., Holland, E., Jacob, D., Lohmann, U., Ramachandran, S., Da Silva Dias, P. L., Wofsy, S. C., and Zhang, X.: Couplings between changes in the climate system and biogeochemistry, in: Climate Change 2007: The Physical Science Basis. Contribution of Working Group I to the Fourth Assessment Report of the Intergovernmental Panel on Climate Change, edited by: Solomon, S., Qin, D., Manning, M., Chen, Z., Marquis, M., Averyt, K. B., Tignor, M., and Miller, H. L., Cambridge University Press, Cambridge, UK and New York, NY, USA, 2007.; Doney, S. C.: The consequences of human-driven ocean acidification for marine life, Biology Reports Ltd., 1(36


Click To View

Additional Books

  • Stable Isotope Ratio (13C/12C) Mass Spec... (by )
  • Modelling Holocene Carbon Accumulation a... (by )
  • Microbial Nitrogen Cycling on the Greenl... (by )
  • Sedimentary and Atmospheric Sources of I... (by )
  • Photosynthetic Activity Buffers Ocean Ac... (by )
  • Downward Fluxes of Sinking Particulate M... (by )
  • Upper Arctic Ocean Water Masses Harbor D... (by )
  • Terrestrial Carbon Sinks in the Brazilia... (by )
  • The Influence of Iron and Light on Net C... (by )
  • Stable Isotopes in Barnacles as a Tool t... (by )
  • Effect of Co2 on the Properties and Sink... (by )
  • Insights Into Mechanisms Governing Fores... (by )
Scroll Left
Scroll Right


Copyright © World Library Foundation. All rights reserved. eBooks from World Library are sponsored by the World Library Foundation,
a 501c(4) Member's Support Non-Profit Organization, and is NOT affiliated with any governmental agency or department.