Biogeosciences www.biogeosciences.net 1726-4170 1726-4189 5 4 2008 10.5194/bg-5-1057-2008 http://www.biogeosciences.net/5/1057/2008/ http://www.biogeosciences.net/5/1057/2008/bg-5-1057-2008.html http://www.biogeosciences.net/5/1057/2008/bg-5-1057-2008.pdf 1057 1072 2008-07-28 Modeling the marine aragonite cycle: changes under rising carbon dioxide and its role in shallow water CaCO₃ dissolution R. Gangstø gangsto@climate.unibe.ch M. Gehlen B. Schneider L. Bopp O. Aumont F. Joos LSCE/IPSL, Laboratoire des Sciences du Climat et de l'Environnement, CEA-CNRS-UVSQ, Orme des Merisiers, Bât. 712, CEA/Saclay, 91198 Gif-sur-Yvette Cedex, France Climate and Environmental Physics, Physics Institute, University of Bern, Sidlerstr. 5, 3012 Bern, Switzerland LOCEAN/IPSL, Centre IRD de Bretagne, BP 70, 29280 Plouzané, France Oeschger Centre for Climate Change Research, University of Bern, Erlachstrasse 9a, 3012 Bern, Switzerland now at: Institute of Geosciences, University of Kiel, Luedwig-Meyn-Str. 10, 24098 Kiel, Germany The marine aragonite cycle has been included in the global biogeochemical model PISCES to study the role of aragonite in shallow water CaCO₃ dissolution. Aragonite production is parameterized as a function of mesozooplankton biomass and aragonite saturation state of ambient waters. Observation-based estimates of marine carbonate production and dissolution are well reproduced by the model and about 60% of the combined CaCO₃ water column dissolution from aragonite and calcite is simulated above 2000 m. In contrast, a calcite-only version yields a much smaller fraction. This suggests that the aragonite cycle should be included in models for a realistic representation of CaCO₃ dissolution and alkalinity. For the SRES A2 CO₂ scenario, production rates of aragonite are projected to notably decrease after 2050. By the end of this century, global aragonite production is reduced by 29% and total CaCO₃ production by 19% relative to pre-industrial. Geographically, the effect from increasing atmospheric CO₂, and the subsequent reduction in saturation state, is largest in the subpolar and polar areas where the modeled aragonite production is projected to decrease by 65% until 2100. Accornero, A., Manno, C., Esposito, F., and Gambi, M. C.: The vertical flux of particulate matter in the polynya of Terra Nova Bay. Part II. Biological components, Antarctic Science 15(2), 175–188, 2003. Allredge, A. and Silver, M.: Characteristics, dynamics and significance of marine snow, Prog. Oceanogr., 20, 41–82, 1988. Andersson, A. J., MacKenzie, F. T., and Lerman, A.: Coastal ocean carbonate ecosystems in the high CO₂ world of the Antropocene, Am J. Sci, 305, 875–918, 2005. Antia, A. N., Suffrian, K., Holste, L., Müller, M. N., Nejstgaard, J. C., Simonelli, P., Carotenuto, Y., and Putzeys, S.: Dissolution of coccolithophorid calcite by microzooplankton and copepod grazing, Biogeosciences Discuss., 5, 1–23, 2008. Arakaki, T. and Mucci, A.: A continuous and mechanistic description of calcite reaction-controlled kinetics in dilute solutions at 25 degrees C and 1 atm total pressure. Aquat. Geochem., 1, 105–130, 1995. Aumont, O., Orr, J. C., Jamous, D., Monfray, P., Marti, O., and Madec, G.: A degradation approach to accelerate simulations to steady-state in a 3-D tracer transport model of the global ocean, Climate Dynamics, 14(2), 101–116, 1998. Aumont, O., Maier-Reimer, E., Blain, S. and Monfray, P.: An ecosystem model of the global ocean including Fe, Si, P colimitations, Glob. Biogeochem. Cy., 17(2), 1060, doi:10.1029/2001GB001745, 2003. Aumont, O. and Bopp, L.: Globalizing results from ocean in situ iron fertilization studies, Glob. Biogeochem. Cy., 20, GB2017, doi:10.1029/2005GB002591, 2006. Berelson, W. M., Balch, W. M., Najjar, R., Feely, R. A., Sabine, C., and Lee, K.: Relating estimates of CaCO₃ production, export, and dissolution in the water column to measurements of CaCO₃ rain into sediment traps and dissolution on the sea floor: A revised global carbonate budget, Glob. Biogeochem. Cy., 21, GB1024, doi:10.1029/2006GB002803, 2007. Berger, W. H.: Deep-Sea carbonate: pteropod distribution and the aragonite compensation depth, Deep-Sea Res., 25, 447–452, 1978. Berner, R. A.: Sedimentation and Dissolution of Pteropods in the Ocean, in The Fate of Fossil Fuel CO₂ in the Oceans, N. R. Andersen and A. Malahoff, editors., 243–260, Plenum Press, New York, 1977. Berner, R. A. and Honjo, S.: Pelagic sedimentation of aragonite: its geochemical significance, Science, 211, 940–942, 1981. Berner, R. A. and Morse, J. W.: Dissolution kinetics of calcium carbonate in seawater: IV. Theory of calcite dissolution. Am. J. Sci. 274, 108–134, 1974. Betzer, P. R., Byrne, R. H., Acker, J. G., Lewis, C. S., Jolley, R. R., and Feely, R. A.: The oceanic carbonate system: a reassessment of biogenic controls, Science 226, 1074–1077, 1984. Bijma, J., Spero, H. J., and Lea, D. W.: Reassessing foraminiferal stable isotope geochemistry: Impact of the oceanic carbonate system (experimental results), in: Use of Proxies in Paleoceanography: Examples From the South Atlantic, edited by: Fischer, G. and Wefer, G., 489–512, Springer, New York, 1999. Broecker, W. S. and Takahashi, T.: The relationship between lysocline depth and in situ carbonate ion concentration, Deep Sea Res. 25, 65–95, 1978. Buitenhuis, E., Le Quéré, C., Aumont, O., Beaugrand, G., Bunker, A., Hirst, A., Ikeda, T., O'Brien, T., Piontkovski, S., and Straile, D.: Biogeochemical fluxes through mesozooplankton, Glob. Biogeochem. Cy., 20, GB2003, doi:10.1029/2005GB002511, 2006. Busenberg, E. and Plummer, L. N.: A comparative study of the dissolution and crystal growth kinetics of calcite and aragonite. In: F.A. Mumptom, Editor, Studies Diagenesis U.S.G.S. Bull. Vol. 1578, US Department of the Interior, Reston, 139–168, 1986. Byrne, R. H., Acker, J. G., Betzer, P. R., Feely, R. A. and Cates, M. H.: Water column dissolution of aragonite in the Pacific Ocean, Nature, 312, 321–326, 1984. Caldeira, K. and Wickett, M. E.: Anthropogenic carbon and ocean pH, Nature, 425, 365, 2003. Caldeira, K. and Wickett, M. E.: Ocean model predictions of chemistry changes from carbon dioxide emissions to the atmosphere and ocean, J. Geophys. Res., 110, C09S04, doi:10.1029/2004JC002671, 2005. Chung, S.-N., Lee, K., Feely, R. A., Sabine, C. L., Millero, F. J., Wanninkhof, R., Bullister, J. L., Key, R. M., and Peng, T.-H.: Calcium carbonate budget in the Atlantic Ocean based on water column inorganic carbon chemistry, Glob. Biogeochem. Cy., 17, 1093, doi:10.1029/2002GB002001, 2003. Collier, R., Dymond, J., Honjo, S., Manganini, S., Francois, R., and Dunbar, R.: The vertical flux of biogenic and lithogenic material in the Ross Sea: moored sediment trap observations 1996–1998, Deep-Sea Res. II, 47, 3491–3520, 2000. Delille, B., Harlay, J., Zondervan, I., Jacquet, S., Chou, L., Wollast, R., Bellerby, R. G. J., Frankignoulle, M., Borges, A. V., Riebesell, U., and Gattuso, J.-P.: Response of primary production and calcification to changes of $p$CO₂ during experimental blooms of the coccolithophorid Emiliania huxleyi, Glob. Biogeochem. Cy., 19, GB2023, doi:10.1029/2004GB002318, 2005. Deuser, W. G. and Ross, E. H.: Seasonally abundant planktonic foraminifera of the Sargasso Sea – succession, deep-water fluxes, isotopic compositions, and paleoceanographic implications, J. Foramin. Res., 19, 268–293, 1989. Dilling, L. and Allredge, A. L.: Fragmentation of marine snow by swimming macrozooplankton: A new process impacting carbon cycling in the sea, Deep Sea Res. Part I, 47, 1227–1245, 2000. Dittert, N., Corrin, L., Bakker, D., Bendsen, J., Gehlen, M., Heinze, C., Maier-Reimer, E., Michalopoulus, P., Soetaert, K. E. R., and Tol, R. J. S.: Integrated data sets of the FP5 Research Project ORFOIS: Origin and fate of biogenic particle fluxes in the ocean and their interactions with atmospheric CO2 concentrations as well as the marine sediment, Vol. 1, WDC-MARE Reports 0002, 2005. Fabry, V. J.: Aragonite production by pteropod mollusks in the subarctic Pacific, Deep-Sea Res., 36, 11, 1735–1751, 1989. Fabry, V. J.: Shell growth rates of pteropod and heteropod mollusks and aragonite production in the open ocean: Implications for the marine carbonate system, J. Mar. Res., 48, 209–222, 1990. Fabry, V. J. and Deuser, W. G.: Aragonite and magnesium calcite fluxes to the deep Sargasso Sea, Deep-Sea Res. Part A., Oceanographic Research Papers, 38, 713-728, 1991. Feely, R. A. and Chen, C.-T. A.: The effect of excess CO₂ on the calculated calcite and aragonite saturation horizons in the northeast Pacific, Geophys. Res. Lett., 9(11), 1294–1297, 1982. Feely, R. A., Sabine, C. L., Lee, K., Millero, F. J., Lamb, M. F., Greeley, D., Bullister, J. L., Key, R. M., Peng, T.-H., Kozyr, A., Ono, T., and Wong, C. S.: In situ calcium carbonate dissolution in the Pacific Ocean, Glob. Biogeochem. Cy., 16, 1144, doi:10.1029/2002GB001866, 2002. Feely, R. A., Sabine, C. L., Lee, K., Berelson, W., Kleypas, J., Fabry, V. J. and Millero, F. J.: Impact of anthropogenic CO$_2 $ on the CaCO₃ system in the oceans, Science, 305, 362–366, 2004. Fischer, G., Donner, B., Ratmeyer, V., Davenport, R., and Wefer, G.: Distinct year-to-year particle flux variations off Cape Blanc during 1988–1991: Relation to $\delta ^18$O-deduced sea-surface temperatures and trade winds, J. Mar. Res., 54, 73–98, 1996. Fischer, G. and Karakas G.: Sinking rates of particles in biogenic silica- and carbonate-dominated production systems of the Atlantic Ocean: implications for the organic carbon fluxes to the deep ocean, Biogesciences Discuss., 5, 2541–2581, 2008. Friis K., Najjar, R. G., Follows, M. J., and Dutkiewicz, S.: Possible overestimation of shallow-depth calcium carbonate dissolution in the ocean, Glob. Biogeochem. Cy., 20, GB4019, doi:10.1029/2006GB002727, 2006. Frost, B. W.: Grazing control of phytoplankton stock in the open subarctic Pacific Ocean: A model assessing the role of mesozooplankton, particularly the large calanoid copepods Neocalanus spp., Mar. Ecol. Prog. Ser., 39, 49–68, 1987. Gattuso J.-P., Frankignoulle, M., Bourge, I., Romaine, S., and Buddemeier, R. W.: Effect of calcium carbonate saturation of seawater on coral calcification, Global and Planetary Change, 18, 37–46, 1998. Gehlen, M., Bassinot, F. C., Chou, L., and McCorkle, D.: Reassessing the dissolution of marine carbonates. Part I: Solubility, Deep Sea Res. I, 52, 1445–1460, doi:10.1016/j.dsr.2005.03.010, 2005. Gehlen, M., Bassinot, F. C., Chou, L., and McCorkle, D.: Reassessing the dissolution of marine carbonates. Part II: Reaction kinetics. Deep-Sea Res. I, 52, 1461-1476, doi:10.1016/j.dsr.2005.03.011, 2005. Gehlen M., Bopp, L., Emprin, N., Aumont, O., Heinze, C., and Ragueneau, O.: Reconciling surface ocean productivity, export fluxes and sediment composition in a global biogeochemical ocean model, Biogeosciences, 3, 521–537, 2006. Gehlen M., Gangstø, R., Schneider, B., Bopp, L., Aumont, O., and Ethe, C.: The fate of pelagic CaCO₃ production in a high CO₂ ocean: A model study, Biogesciences 4, 505–519, 2007. Goyet, C., Healy, R. J., and Ryan, J. P.: Global distribution of total inorganic carbon and total alkalinity below the deepest winter mixed layer depths, ORNL/CDIAC-127, NDP-076, Carbon Dioxide Information Analysis Center, Oak Ridge National Laboratory, US Department of Energy, Oak Ridge, Tennessee, 2000. Hales, B.: Respiration, dissolution, and the lysocline, Paleoceanography, 18, 1099–1113, 2003. Harris, R. P.: Zooplankton grazing on the coccolithophore Emiliania huxleyi and its role in inorganic carbon flux, Mar. Biol., 119, 431–439, 1994. Hoegh-Guldberg, O., Mumby, P. J., Hooten, A. J. et al.: Coral reefs under rapid climate change and ocean acidification, Science, 318, 1737–1742, 2007. Honjo, S. and Erez, J.: Dissolution rates of calcium carbonate in the deep ocean: an in-situ experiment in the northern Atlantic Ocean, Earth and Planetary Science Letters, 40, 287–300, 1978. Honjo, S. and Roman, M. R.: Marine copepod fecal pellets: production, preservation and sedimentation, J. mar. Res. 36, 45–57, 1978. Honjo, S., Francois, R., Manganini, S., Dymond, J., and Collier, R.: Particle fluxes to the interior of the Southern Ocean in the Western Pacific sector along 170° W, Deep-Sea Res. II, 47, 3521–3548, 2000. Iglesias-Rodriguez, M. D., Armstrong, R., Feely, R., Hood, R., Kleypas, J., Milliman, J. D., Sabine, C., and Sarmiento, J.: Progress made in study of ocean's calcium carbonate budget, EOS, 83(34), 365, 374–375, 2002. Jansen, H., Zeebe, R. E., and Wolf-Gladrow, D. A.: Modeling the dissolution of settling CaCO₃ in the ocean, Glob. Biogeochem. Cy., 16(2), 1027, 10.1029/2000GB001279, 2002. Kalberer, M., Fischer, G., Pätzold, J., Donner, B., Segl, M., and Wefer, G.: Seasonal sedimentation and stable isotope records of pteropods off Cape Blanc, Mar. Geol., 113, 305–320, 1993. Keir, R.: The dissolution kinetics of biogenic calcium carbonates in seawater, Geochimica et Cosmochimica Acta, 44, 241–252, 1980. Key, R. M., Kozyr, A., Sabine, C. L., Lee, K., Wanninkhof, R., Bullister, J. L., Feely, R. A., Millero, F. J., Mordy, C., and Peng, T.-H.: A global ocean carbon climatology: Results from Global Data Analysis Project (GLODAP), Glob. Biogeochem. Cy., 18, GB4031, doi:10.1029/2004GB002247, 2004. Kleypas, J. A., Buddemeier, R. W., Archer, D., Gattuso, J.-P., Langdon, C., and Opdyke, B. N.: Geochemical consequences of increased atmospheric carbon dioxide on coral reefs, Science, 284, 118–120, 1999. Kleypas, J. A., Feely, R. A., Fabry, V. J., Langdon, C., Sabine, C. L., and Robbins, L. L.: Impacts of ocean acidification on coral reefs and other marine calcifiers: A guide for future research, report of a workshop held 18–20~April~2005, St. Petersburg, FL, sponsored by NSF, NOAA, and the US Geological Survey, 88 pp., 2006. Lalli, C. M. and Gilmer, R. W.: Pelagic snails: The Biology of Holoplanktonic Gastropod Mollusks, Stanford University Press, 1989. Langdon, C., Broecker, W. S., Hammond, D. E., Glenn, E., Fitzsimmons, K., Nelson, S. G., Peng, T.-H., Hajdas, I., and Bonani, G.: Effect of elevated CO₂ on the community metabolism of an experimental coral reef, Glob. Biogeochem. Cy., 17(1), 1011, doi:10.1029/2002GB001941, 2003. Langdon, C. and Atkinson, M. J.: Effect of elevated $p$CO₂ on photosynthesis and calcification of corals and interactions with seasonal change in temperate/irradiance and nutrient enrichment, J. Geophys. Res., 110, C09S07, doi:10.1029/2004JC002576, 2005. Manno, C., Sandrini, S., Tositti, L., and Accornero, A.: First stages of degradation of \textitLimacina helicina shells observed above the aragonite chemical lysocline in Terra Nova Bay (Antarctica), J. Mar. Sys., 68, 91–102, 2007. Madec, G. P., Delecluse, P., Imbard, M., and Lévy, C.: OPA 8.1 Ocean general circulation model reference manual, Notes du pole de modélisation, IPSL, 1998. Milliman, J. D.: Production and accumulation of calcium carbonate in the ocean: budget of a nonsteady state, Glob. Biogeochem. Cy., 7, 927–957, 1993. Milliman, J. D. and Droxler, A. W.: Neritic and pelagic carbonate sedimentation in the marine environment: ignorance is not bliss, Geol. Rundsch., 85, 496–504, 1996. Milliman, J. D., Troy, P. J., Balch, W. M., Adams, A. K., Li, Y.-H., and Mackenzie, F. T.: Biologically mediated dissolution of calcium carbonate above the chemical lysocline?, Deep-Sea Research I, 46, 1653–1669, 1999. Moloney, C. L. and Field, J. G.: The size-based dynamics of plankton food webs. I. A simulation model of carbon and nitrogen flows, J. Plankton Res., 1003–1038, 1991. Morse, J. W. and Berner, R. C.: Dissolution kinetics of calcium carbonate in seawater. II: a kinetic origin for the lysocline, Am. J. Sci., 272, 840–851, 1972. Morse, J. W.: Dissolution kinetics of calcium carbonate in seawater. VI. The near-equilibrium dissolution kinetics of carbonate-rich deep-sea sediments, Am. J. Sci., 278, 344–353, 1978. Morse, J. W., de Kanel, J., and Harris, K.: Dissolution kinetics of calcium carbonate in seawater. VII. The dissolution kinetics of synthetic aragonite and pteropod tests, Am. J. Sci, 279, 482–502, 1979. Morse, J. and MacKenzie, F. T.: Geochemistry of Sedimentary Carbonates, 707 pp., Elsevier, New York, 1990. Morse, J. W. and Arvidson, R. S.: The dissolution kinetics of major sedimentary carbonate minerals, Earth-Sci. Rev., 58, 51–84, 2002. Morse, J. W., Arvidson, R. S., and Lüttge, A.: Calcium carbonate formation and dissolution, Chem. Rev. 107, 342–381, 2007. Mucci, A.: The solubility of calcite and aragonite in seawater at various salinities, temperatures and one atmosphere total pressure, Amer. J. Sci., 283, 780–799, 1983. Orr, J. C., Fabry, V. J., Aumont, O., et al.: Anthropogenic ocean acidification over the twenty-first century and its impact on calcifying organisms, Nature, 437, 681–686, 2005. Plummer, L. N., Wigley, T. M. L., and Parkhurst, D. L.: The kinetics of calcite dissolution in CO₂-water systems at 5–60°C and 0.0 to 1.0 atm CO₂, Am. J. Sci., 278, 179–216, 1978. Pond, D. W., Harris, R. P., and Brownlee, C.: A microinjection technique using a pH-sensitive dye to determine the gut pH of Calanus-Helgolandicus, Mar. Biol., 123, 75–79, 1995. Riebesell U., Zondervan, I., Rost, B., Tortell, P. D., Zeebe, R. E., and Morel, F. M. M.: Reduced calcification of marine plankton in response to increased atmospheric CO₂, Nature, 407, 364–367, 2000. Royal Society: Ocean acidification due to increasing atmospheric carbon dioxide, Document 12/05, Royal Society: London, 2005. Sabine, C. L., Key, R. M., Feely, R. A., and Greeley, D.: Inorganic carbon in the Indian Ocean: Distribution and dissolution processes, Glob. Biogeochem. Cy., 16, 1067, doi:10.1029/2002GB001869, 2002. Sarmiento, J. L., Dunne, J., Gnanadesikan, A., Key, R. M., Matsumoto, K., and Slater, R.: A new estimate of the CaCO₃ to organic carbon export ratio, Glob. Biogeochem. Cy., 16, 1107, doi:10.1029/2002GB001919, 2002. Sawada, K., Handa, N., and Nakatsuka, T.: Production and transport of long-chain alkenones and alkyl alkenoates in a sea water column in the northwestern Pacific off central Japan, Mar. Chem., 59, 219–234, 1988. Sciandra, A., Harlay, J., Lefèvre, D., Lemée, R., Rimmelin, P., Denis, M., and Gattuso, J.-P.: Response of coccolithophorid Emiliania huxleyi to elevated partial pressure of CO₂ under nitrogen limitation, Marine Ecology Progress Series, 261, 111–222, 2003. Steinacher, M: Ocean acidification and changes in marine productivity in simulations with the fully coupled 3-D climate model CSM1.4-carbon, Diploma thesis, University of Bern, Bern, 2007. Stemmann, L., Jackson, G. A., and Gorsky, G.: A vertical model of particle size distributions and fluxes in the mid-water column that includes biological and physical processes, Part II, Application to a three year survey in the NW Mediterranean Sea, Deep Sea Res. Part I, 51, 885–908. Sverdrup, H. U., Johnson, M. W., and Fleming, R. H.: The oceans, their physics, chemistry and general biology, New York: Prentice-Hall, 1942. Tsurumi, M., Mackas, D. L., Whitney, F. A., Dibacco, C., Galbraith, M. D., and Wong, C. S.: Pteropods, eddies, carbon flux, and climate variability in the Alaska Gyre, Deep-Sea Research II, 52, 1037–1053, 2005. Urban-Rich, J., Dagg, M., and Peterson, J.: Copepod grazing on phytoplankton in the Pacific sector of the Antarctic Polar Front, Deep-Sea Res. II, 48, 4223–4246, 2001. Walter, L. M. and Morse, J. W.: The dissolution kinetics of shallow marine carbonates in seawater: a laboratory study, Geochim. Cosmochim. Acta, 49, 1503–1514, 1985. Wolf-Gladrow, D. A., Riebesell, U., Burkhardt, S., and Bijma, J.: Direct effects of CO₂ concentration on growth and isotopic composition of marine plankton, Tellus, 51B(2), 461–476, 1999. Wollast, R. and Chou, L.: Distribution and fluxes of calcium carbonate along the continental margin in the Gulf of Biscay, Aquatic Geochemistry, 4(3–4), 369–393, 1998. Zeebe, R. E. and Wolf-Gladrow, D.: CO₂ in seawater: Equilibrium, kinetics, isotopes, Elsivier Oceanography Series, 65, 346 pp., 2001. Zondervan, I., Rost, B., and Riebesell, U.: Effect of CO₂ concentration on the PIC/POC ratio in the coccolithophore Emiliania huxleyi grown under light-limiting conditions and different daylengths, J. Exp. Mar. Biol. Ecol., 272, 55–70, 2002. Zondervan, I., Zeebe, R. E., Rost, B., and Riebesell, U.: Decreasing marine biogenic calcification: A negative feedback on rising atmospheric $p$CO₂, Glob. Biogeochem. Cy., 15(2) 507–516, 2001.