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The Agulhas System as a Key Region of the Global Oceanic Circulation

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Abstract

The Agulhas system at the interface between the Indian and Atlantic Ocean is an important region in the global oceanic circulation with a recognized key role in global climate and climate change. It is dominated by high temporal and horizontal variability. This project aims to realistically simulate this complex current system and its effect on the interoceanic transport with the highest spatial resolution to date. Using a hierarchy of global ocean models with realistic and idealized atmospheric forcing, the effect of inter-ocean transport on the large-scale circulation in the Atlantic will be established. This includes the variability of the meridional overturning and heat transports. The core of the project is a high-resolution model of the Agulhas region that is nested in a global one at lower resolution. Both models are able to interact, which allows one to study the feedbacks from the high-resolution model on the large-scale circulation. This project is embedded in the European ocean modeling effort DRAKKAR.

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References

  1. Barnier, B., Madec, G., Penduff, T., Molines, J.-M., Treguier, A.-M., Beckmann, A., Biastoch, A., Böning, C., Dengg, J., Gulev, S. Le Sommer, J., Remy, E., Talandier, C., Theetten, S., and Maltrud, M. (2006). Impact of partial steps and momentum advection schemes in a global ocean circulation model at eddy permitting resolution. Ocean Dynmics, page in press.

    Google Scholar 

  2. De Ruijter, W. P. M., Van Leeuwen, P. J., and Lutjeharms, J. R. E. (1999). Generation and evolution of Natal Pulses, solitary meanders in the Agulhas Current. J. Phys. Oceanogr., 29:3043–3055.

    Article  Google Scholar 

  3. Debreu, L. (2000). Raffinement adaptif de maillage et methodes de zoom. Applications aux modeles d’ocean. PhD thesis, University Joseph Fourier, Grenoble.

    Google Scholar 

  4. Donners, J. and Drijjhout, S. S. (2004). The Lagrangian view of South Atlantic interocean exchange in a global ocean model compared with inverse model results. J. Phys. Oceanogr., 34:1019–1035.

    Article  Google Scholar 

  5. Gordon, A. L., Weiss, R. F., Smethie, W. M., and Warner, M. J. (1992). Thermocline and intermediate water communication between the South Atlantic and Indian Oceans. J. Geophys. Res., 97:7223–7240.

    Article  Google Scholar 

  6. Hurrell, J., Kushnir, Y., Ottersen, G., and Visbeck, V., editors (2003). The North Atlantic Oscillation: Climate Significance and Environmental Impact, volume 134 of Geophysical Monograph Series. AGU.

    Google Scholar 

  7. Lutjeharms, J. R. E. (1996). The exchange of water between the South Indian and South Atlantic oceans; a review. In Wefer, G., editor, The South Atlantic Present and Past Circulation. Elsevier.

    Google Scholar 

  8. Madec, G., Delecluse, P., Imbard, M., and Levy, C. (1999). Opa 8.1 ocean general circulation model reference manual. Technical report, Institut Pierre Simon Laplace des Sciences de l’Environment Global.

    Google Scholar 

  9. Matsumoto, K., Sarmiento, J., Key, R., Aumont, O., Bullister, J., Caldeira, K., Campin, J.-M., Doney, S., Drange, H., Dutay, J.-C., Follows, M., Gao, Y., Gnanadesikan, A., Gruber, N., Ishida, A., Joos, F., Lindsay, K., Maier-Reimer, E., Marshall, J., Matear, R., Monfray, P., Mouchet, A., Najjar, R., Plattner, G.-K., Schlitzer, R., Slater, R., Swathi, P., Totterdell, I., Weirig, M.-F., Yamanaka, Y., Yool, A., and Orr, J. (2004). Evaluation of ocean carbon cycle models with data-based metrics. Geophysical Research Letters, 31(7):L07303 1–4.

    Article  Google Scholar 

  10. Peeters, F. J. C., Acheson, R., Brummer, G.-J. A., De Ruijter, W. P. M., Ganssen, G. G., Schneider, R. R., Ufkes, E., and Kroon, D. (2004). Vigorous exchange between Indian and Atlantic Ocean at the end of the last five glacial periods. Nature, 400:661–665.

    Article  Google Scholar 

  11. Stocker, T. F., Clarke, G. K. C., Le Treut, H., Lindzen, R. S., Meleshko, V. P., Mugura, R. K., Palmer, T. N., Pierrehumbert, R. T., Sellers, P. J., Trenberth, K. E., and Willebrand, J. (2001). Physical climate processes and feedbacks. In Houghton, J. T., Ding, Y., Griggs, D. J., Noguer, M., van der Linden, P. J., Dai, X., Maskell, K., and Johnson, C. A., editors, Climate Change 2001: The Scientific Basis. Contribution of Working Group I to the Third Assessment Report of the Intergovernmental Panel on Climate Change. Cambridge University Press.

    Google Scholar 

  12. Weijer, W., De Ruijter, W. P. M., and Dijkstra, H. A. (2001). Stability of the Atlantic overturning circulation: Competition between Bering strait freshwater flux and Agulhas heat and salt sources. J. Phys. Oceanogr., 31:2385–2402.

    Article  Google Scholar 

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Biastoch, A., Böning, C.W., Svensson, F. (2007). The Agulhas System as a Key Region of the Global Oceanic Circulation. In: Resch, M., Bönisch, T., Tiyyagura, S., Furui, T., Seo, Y., Bez, W. (eds) High Performance Computing on Vector Systems 2006. Springer, Berlin, Heidelberg. https://doi.org/10.1007/978-3-540-68743-6_12

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