Articles | Volume 12, issue 3
https://doi.org/10.5194/os-12-743-2016
© Author(s) 2016. This work is distributed under
the Creative Commons Attribution 3.0 License.
the Creative Commons Attribution 3.0 License.
https://doi.org/10.5194/os-12-743-2016
© Author(s) 2016. This work is distributed under
the Creative Commons Attribution 3.0 License.
the Creative Commons Attribution 3.0 License.
Research article
| 
01 Jun 2016
Research article |
| 01 Jun 2016
Dissipation of the energy imparted by mid-latitude storms in the Southern Ocean
LEGOS, Université de Toulouse, IRD, CNRS, CNES, UPS, Toulouse,
France
CNRS-IRD-Sorbonne Universités, UPMC, MNHN, LOCEAN Laboratory,
Paris, France
Xavier Capet
CNRS-IRD-Sorbonne Universités, UPMC, MNHN, LOCEAN Laboratory,
Paris, France
Gurvan Madec
CNRS-IRD-Sorbonne Universités, UPMC, MNHN, LOCEAN Laboratory,
Paris, France
National Oceanographic Centre, Southampton, UK
Guillaume Roullet
University of Brest, CNRS, IRD, Ifremer, Laboratoire d'Océanographie
Physique et Spatiale (LOPS), IUEM, Brest, France
Patrice Klein
University of Brest, CNRS, IRD, Ifremer, Laboratoire d'Océanographie
Physique et Spatiale (LOPS), IUEM, Brest, France
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The dynamical balance of the Antarctic Circumpolar Current and its implications on the functioning of the world ocean are not fully understood and poorly represented in global circulation models. In this study, the sensitivities of an idealized Southern Ocean (SO) storm track are explored with a set of eddy-rich numerical simulations. We show that the classical partition between barotropic and baroclinic modes is sensitive to current–topography interactions in the mesoscale range of 10–100 km.
Marie-Hélène Radenac, Julien Jouanno, Christine Carine Tchamabi, Mesmin Awo, Bernard Bourlès, Sabine Arnault, and Olivier Aumont
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Satellite data and a remarkable set of in situ measurements show a main bloom of microscopic seaweed, the phytoplankton, in summer and a secondary bloom in December in the central equatorial Atlantic. They are driven by a strong vertical supply of nitrate in May–July and a shorter and moderate supply in November. In between, transport of low-nitrate water from the west explains most nitrate losses in the sunlit layer. Horizontal eddy-induced processes also contribute to seasonal nitrate removal.
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The currents along the West African seaboard are poorly known. Based on a carefully evaluated numerical simulation the present study describes these currents in the sector 8–20°N and the physical processes that drive them. Prevailing northward flow with two intensification periods per year is identified. Both local and distant coastal winds (blowing as far as thousands of kilometers away in the Gulf of Guinea) contribute to the circulation in this sector.
Julien Jouanno, Olga Hernandez, and Emilia Sanchez-Gomez
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Louis Thiry, Long Li, Guillaume Roullet, and Etienne Mémin
Geosci. Model Dev., 17, 1749–1764, https://doi.org/10.5194/gmd-17-1749-2024, https://doi.org/10.5194/gmd-17-1749-2024, 2024
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Peter Brandt, Gaël Alory, Founi Mesmin Awo, Marcus Dengler, Sandrine Djakouré, Rodrigue Anicet Imbol Koungue, Julien Jouanno, Mareike Körner, Marisa Roch, and Mathieu Rouault
Ocean Sci., 19, 581–601, https://doi.org/10.5194/os-19-581-2023, https://doi.org/10.5194/os-19-581-2023, 2023
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Roy Dorgeless Ngakala, Gaël Alory, Casimir Yélognissè Da-Allada, Olivia Estelle Kom, Julien Jouanno, Willi Rath, and Ezinvi Baloïtcha
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Michel Tchilibou, Ariane Koch-Larrouy, Simon Barbot, Florent Lyard, Yves Morel, Julien Jouanno, and Rosemary Morrow
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Takaya Uchida, Julien Le Sommer, Charles Stern, Ryan P. Abernathey, Chris Holdgraf, Aurélie Albert, Laurent Brodeau, Eric P. Chassignet, Xiaobiao Xu, Jonathan Gula, Guillaume Roullet, Nikolay Koldunov, Sergey Danilov, Qiang Wang, Dimitris Menemenlis, Clément Bricaud, Brian K. Arbic, Jay F. Shriver, Fangli Qiao, Bin Xiao, Arne Biastoch, René Schubert, Baylor Fox-Kemper, William K. Dewar, and Alan Wallcraft
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Ocean and climate scientists have used numerical simulations as a tool to examine the ocean and climate system since the 1970s. Since then, owing to the continuous increase in computational power and advances in numerical methods, we have been able to simulate increasing complex phenomena. However, the fidelity of the simulations in representing the phenomena remains a core issue in the ocean science community. Here we propose a cloud-based framework to inter-compare and assess such simulations.
Pierre Damien, Julio Sheinbaum, Orens Pasqueron de Fommervault, Julien Jouanno, Lorena Linacre, and Olaf Duteil
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Julien Jouanno, Rachid Benshila, Léo Berline, Antonin Soulié, Marie-Hélène Radenac, Guillaume Morvan, Frédéric Diaz, Julio Sheinbaum, Cristele Chevalier, Thierry Thibaut, Thomas Changeux, Frédéric Menard, Sarah Berthet, Olivier Aumont, Christian Ethé, Pierre Nabat, and Marc Mallet
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The tropical Atlantic has been facing a massive proliferation of Sargassum since 2011, with severe environmental and socioeconomic impacts. We developed a modeling framework based on the NEMO ocean model, which integrates transport by currents and waves, and physiology of Sargassum with varying internal nutrient quota, and considers stranding at the coast. Results demonstrate the ability of the model to reproduce and forecast the seasonal cycle and large-scale distribution of Sargassum biomass.
Julien Jouanno and Xavier Capet
Ocean Sci., 16, 1207–1223, https://doi.org/10.5194/os-16-1207-2020, https://doi.org/10.5194/os-16-1207-2020, 2020
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The dynamical balance of the Antarctic Circumpolar Current and its implications on the functioning of the world ocean are not fully understood and poorly represented in global circulation models. In this study, the sensitivities of an idealized Southern Ocean (SO) storm track are explored with a set of eddy-rich numerical simulations. We show that the classical partition between barotropic and baroclinic modes is sensitive to current–topography interactions in the mesoscale range of 10–100 km.
Marie-Hélène Radenac, Julien Jouanno, Christine Carine Tchamabi, Mesmin Awo, Bernard Bourlès, Sabine Arnault, and Olivier Aumont
Biogeosciences, 17, 529–545, https://doi.org/10.5194/bg-17-529-2020, https://doi.org/10.5194/bg-17-529-2020, 2020
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Satellite data and a remarkable set of in situ measurements show a main bloom of microscopic seaweed, the phytoplankton, in summer and a secondary bloom in December in the central equatorial Atlantic. They are driven by a strong vertical supply of nitrate in May–July and a shorter and moderate supply in November. In between, transport of low-nitrate water from the west explains most nitrate losses in the sunlit layer. Horizontal eddy-induced processes also contribute to seasonal nitrate removal.
Lala Kounta, Xavier Capet, Julien Jouanno, Nicolas Kolodziejczyk, Bamol Sow, and Amadou Thierno Gaye
Ocean Sci., 14, 971–997, https://doi.org/10.5194/os-14-971-2018, https://doi.org/10.5194/os-14-971-2018, 2018
Short summary
Short summary
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Julien Jouanno, Olga Hernandez, and Emilia Sanchez-Gomez
Earth Syst. Dynam., 8, 1061–1069, https://doi.org/10.5194/esd-8-1061-2017, https://doi.org/10.5194/esd-8-1061-2017, 2017
Laura Cimoli, Alexandre Stegner, and Guillaume Roullet
Ocean Sci., 13, 905–923, https://doi.org/10.5194/os-13-905-2017, https://doi.org/10.5194/os-13-905-2017, 2017
Short summary
Short summary
The dispersion of coastal waters offshore strongly depends on the dynamical regime of the current that characterizes the local coastal circulation. By using an idealized model configuration, we identify some key parameters – which can be calculated from observations – that describe when a coastal current flowing over a sloping topography acts as a source of meanders or eddies or as a dynamical barrier to the cross-shore transport.
M. Ballarotta, F. Roquet, S. Falahat, Q. Zhang, and G. Madec
Clim. Past Discuss., https://doi.org/10.5194/cpd-11-3597-2015, https://doi.org/10.5194/cpd-11-3597-2015, 2015
Revised manuscript not accepted
Short summary
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We investigate the impact of the ocean geothermal heating (OGH) on a glacial ocean state using numerical simulations. We found that the OGH is a significant forcing of the abyssal ocean and thermohaline circulation. Applying the OGH warms the Antarctic Bottom Water by ~0.4°C and strengthens the deep circulation by 15% to 30%. The geothermally heated waters are advected from the Indo-Pacific to the North Atlantic basin, indirectly favouring the deep convection in the North Atlantic.
R. Marsh, V. O. Ivchenko, N. Skliris, S. Alderson, G. R. Bigg, G. Madec, A. T. Blaker, Y. Aksenov, B. Sinha, A. C. Coward, J. Le Sommer, N. Merino, and V. B. Zalesny
Geosci. Model Dev., 8, 1547–1562, https://doi.org/10.5194/gmd-8-1547-2015, https://doi.org/10.5194/gmd-8-1547-2015, 2015
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Calved icebergs account for around 50% of total freshwater input to the ocean from the Greenland and Antarctic ice sheets. As they melt, icebergs interact with the ocean. We have developed and tested interactive icebergs in a state-of-the-art global ocean model, showing how sea ice, temperatures, and currents are disturbed by iceberg melting. With this new model capability, we are better prepared to predict how future increases in iceberg numbers might influence the oceans and climate.
A. M. Treguier, J. Deshayes, J. Le Sommer, C. Lique, G. Madec, T. Penduff, J.-M. Molines, B. Barnier, R. Bourdalle-Badie, and C. Talandier
Ocean Sci., 10, 243–255, https://doi.org/10.5194/os-10-243-2014, https://doi.org/10.5194/os-10-243-2014, 2014
J. J.-M. Hirschi, A. T. Blaker, B. Sinha, A. Coward, B. de Cuevas, S. Alderson, and G. Madec
Ocean Sci., 9, 805–823, https://doi.org/10.5194/os-9-805-2013, https://doi.org/10.5194/os-9-805-2013, 2013
Cited articles
Abernathey, R., Marshall, J., and Ferreira, D.: The Dependence of Southern Ocean Meridional Overturning on Wind Stress, J. Phys. Oceanogr., 41, 2261–2278, 2011.
Alford, M. H.: Improved global maps and 54-year history of wind-work on ocean inertial motions, Geophys. Res. Lett., 30, 2003.
Alford, M. H., Cronin, M. F., and Klymak, J. M.: Annual Cycle and Depth Penetration of Wind-Generated Near-Inertial Internal Waves at Ocean Station Papa in the Northeast Pacific, J. Phys. Oceanogr., 42, 889–909, 2012.
Anderson, D. L. and Gill, A. E.: Beta dispersion of inertial waves, J. Geophys. Res.-Oceans, 84, 1836–1842, 1979.
Badin, G. and Williams, R. G.: On the buoyancy forcing and residual circulation in the Southern Ocean: The feedback from Ekman and eddy transfer, J. Phys. Oceanogr., 40, 295–310, 2010.
Barnier, B., Siefridt, L., and Marchesiello, P.: Thermal forcing for a global ocean circulation model using a three-year climatology of ECMWF analyses, J. Marine Syst., 6, 363–380, 1995.
Berbery, E. H. and Vera, C. S.: Characteristics of the Southern Hemisphere winter storm track with filtered and unfiltered data, J. Atmos. Sci., 53, 468–481, 1996.
Blaker, A. T., Hirschi, J. J., Sinha, B., De Cuevas, B., Alderson, S., Coward, A., and Madec, G.: Large near-inertial oscillations of the Atlantic meridional overturning circulation, Ocean Model., 42, 50–56, 2012.
Cunningham, S. A., Alderson, S. G., King, B. A., and Brandon, M. A.: Transport and variability of the Antarctic circumpolar current in drake passage, J. Geophys. Res.-Oceans, 108, 8084, https://doi.org/10.1029/2001JC001147, 2003.
Curcic, M., Chen, S. S., and Özgökmen, T. M.: Hurricane-induced ocean waves and Stokes drift and their impacts on surface transport and dispersion in the Gulf of Mexico, Geophys. Res. Lett., 43, 2773–2781, https://doi.org/10.1002/2015GL067619, 2016.
Cuypers, Y., Le Vaillant, X., Bouruet-Aubertot, P., Vialard, J., and Mcphaden, M. J.: Tropical storm-induced near-inertial internal waves during the Cirene experiment: Energy fluxes and impact on vertical mixing, J. Geophys. Res.-Oceans, 118, 358–380, 2013.
Danioux, E., Klein, P., and Rivière, P.: Propagation of wind energy into the deep ocean through a fully turbulent mesoscale eddy field, J. Phys. Oceanogr., 38, 2224–2241, 2008.
Danioux, E., Klein, P., Hecht, M. W., Komori, N., Roullet, G., and Le Gentil, S.: Emergence of Wind-Driven Near-Inertial Waves in the Deep Ocean Triggered by Small-Scale Eddy Vorticity Structures, J. Phys. Oceanogr., 41, 1297–1307, 2011.
de Boyer Montegut, C., Madec, G., Fischer, A. S., Lazar, A., and Iudicone, D.: Mixed layer depth over the global ocean: An examination of profile data and a profile-based climatology, J. Geophys. Res., 109, C12003, https://doi.org/10.1029/2004JC002378, 2004.
De Lavergne C., Madec, G., Le Sommer, J., Nurser, A. G., and Naveira-Garabato, A. C.: On the consumption of Antarctic Bottom Water in the abyssal ocean, J. Phys. Oceanogr., 46, 635–651, https://doi.org/10.1175/JPO-D-14-0201.1, 2016.
Doglioli, A. M., Blanke, B., Speich, S., and Lapeyre, G.: Tracking coherent structures in a regional ocean model with wavelet analysis: Application to Cape Basin eddies, J. Geophys. Res.-Oceans, 112, C05043, https://doi.org/10.1029/2006JC003952, 2007.
Elipot, S. and Gille, S. T.: Estimates of wind energy input to the Ekman layer in the Southern Ocean from surface drifter data, J. Geophys. Res.-Oceans, 114, C06003, https://doi.org/10.1029/2008JC005170, 2009.
Fox-Kemper, B., Ferrari, R., and Hallberg, R.: Parameterization of mixed layer eddies – Part I: Theory and diagnosis, J. Phys. Oceanogr., 38, 1145–1165, 2008.
Furuichi, N., Hibiya, T., and Niwa, Y.: Model-predicted distribution of wind-induced internal wave energy in the world's oceans, J. Geophys. Res.-Oceans, 113, C09034, https://doi.org/10.1029/2008JC004768, 2008.
Garrett, C.: What is the “near-inertial” band and why is it different from the rest of the internal wave spectrum?, J. Phys. Oceanogr., 31, 962–971, 2001.
Gent, P. R.: Effects of Southern Hemisphere Wind Changes on the Meridional Overturning Circulation in Ocean Models, Mar. Sci., 8, 79–94, https://doi.org/10.1146/annurev-marine-122414-033929, 2016.
Gille, S. T., Ledwell, J., Naveira Garabato, A., Speer, K., Balwada, D., Brearley, A., Girton, J. B., Griesel, A., Ferrari, R., Klocker, A., LaCasce, J., Lazarevich, P., Mackay, N., Meredith, M. P., Messias, M.-J., Owens, B., Sallée, J.-B., Sheen, K., Shuckburgh, E., Smeed, D. A., Laurent, L. C. S., Toole, J. M., Watson, A. J., Wienders, N., and Zajaczkovski, U.: The diapycnal and isopycnal mixing experiment: a first assessment, CLIVAR Exchanges, 17, 46–48, 2012.
Greatbatch, R. J.: On the response of the ocean to a moving storm: The nonlinear dynamics, J. Phys. Oceanogr., 13, 357–367, 1983.
Greatbatch, R. J.: On the Response of the Ocean to a Moving Storm: Parameters and Scales, J. Phys. Oceanogr., 14, 59–78, 1984.
Hogg, A. M., Meredith, M. P., Chambers, D. P., Abrahamsen, E. P., Hughes, C. W., and Morrison, A. K.: Recent trends in the Southern Ocean eddy field, J. Geophys. Res.-Oceans, 120, 257–267, 2015.
Ivey, G. N., Winters, K. B., and Koseff, J. R.: Density stratification, turbulence, but how much mixing?, Annu. Rev. Fluid Mech., 40, 169–184, 2008.
Jayne, S. R.: The impact of abyssal mixing parameterizations in an ocean general circulation model, J. Phys. Oceanogr., 39, 1756–1775, 2009.
Jochum, M., Briegleb, B. P., Danabasoglu, G., Large, W. G., Norton, N. J., Jayne, S. R., Alford, M. H., and Bryan, F. O.: The impact of oceanic near-inertial waves on climate, J. Climate, 26, 2833–2844, https://doi.org/10.1175/JCLI-D-12-00181.1, 2013.
Joyce, T. M., Toole, J. M., Klein, P., and Thomas, L. N.: A near-inertial mode observed within a Gulf Stream warm-core ring, J. Geophys. Res.-Oceans, 118, 1797–1806, 2013.
Komori, N., Ohfuchi, W., Taguchi, B., Sasaki, H., and Klein, P.: Deep ocean inertia-gravity waves simulated in a high-resolution global coupled atmosphere–ocean GCM, Geophys. Res. Lett., 35, L04610, https://doi.org/10.1029/2007GL032807, 2008.
Kunze, E.: Near-inertial propagation in geostrophic shear, J. Phys. Oceanogr., 15, 544–565, 1985.
Kunze, E.: The energy-balance in a warm-core rings near-inertial critical layer, J. Phys. Oceanogr., 25, 942–957, 1995.
Kurian, J., Colas, F., Capet, X., McWilliams, J. C., and Chelton, D. B.: Eddy properties in the California current system, J. Geophys. Res.-Oceans, 116, C08027, https://doi.org/10.1029/2010JC006895, 2011.
Leaman, K. D. and Sanford, T. B.: Vertical energy propagation of inertial waves: A vector spectral analysis of velocity profiles, J. Geophys. Res., 80, 1975–1978, https://doi.org/10.1029/JC080i015p01975, 1975.
Leclair, M. and Madec, G.: A conservative leap-frog time stepping method, Ocean Model., 30, 88–94, 2009.
Ledwell, J. R., St. Laurent, L. C., Girton, J. B., and Toole, J. M.: Diapycnal mixing in the Antarctic circumpolar current, J. Phys. Oceanogr., 41, 241–246, 2011.
Madec G.: NEMO ocean engine (Draft edition r5171), Note du Pôle de modélisation, Institut Pierre-Simon Laplace (IPSL), France, No. 27 ISSN No. 1288-1619, 2014.
Marchesiello, P., Capet, X., Menkes, C., and Kennan, S. C.: Submesoscale dynamics in tropical instability waves, Ocean Model., 39, 31–46, 2011.
Marshall, J. and Radko, T.: Residual-mean solutions for the Antarctic Circumpolar Current and its associated overturning circulation, J. Phys. Oceanogr., 33, 2341–2354, 2003.
Marshall, J., Jamous, D., and Nilsson, J.: Reconciling thermodynamic and dynamic methods of computation of water-mass transformation rates, Deep Sea Res. Pt. I, 46, 545–572, 1999.
Mazloff, M. R., Ferrari, R., and Schneider, T.: The Force Balance of the Southern Ocean Meridional Overturning Circulation, J. Phys. Oceanogr., 43, 1193–1208, 2013.
Melet, A., Hallberg, R., Legg, S., and Polzin, K.: Sensitivity of the Ocean State to the Vertical Distribution of Internal-Tide-Driven Mixing, J. Phys. Oceanogr., 43, 602–615, https://doi.org/10.1175/JPO-D-12-055.1, 2013.
Morrison, A. K. and Hogg, A. M.: On the relationship between Southern Ocean overturning and ACC transport, J. Phys. Oceanogr., 43, 140–148, 2013.
Morrison, A. K., Hogg, A. M., and Ward, M. L.: Sensitivity of the Southern Ocean overturning circulation to surface buoyancy forcing, Geophys. Res. Lett., 38, L14602, https://doi.org/10.1029/2011GL048031, 2011.
Morrow, R., Ward, M. L., Hogg, A. M., and Pasquet, S.: Eddy response to Southern Ocean climate modes, J. Geophys. Res., 115, C10030, https://doi.org/10.1029/2009JC005894, 2010.
MacKinnon, J., Alford, M., Bouruet-Aubertot, P., Bindoff, N., Elipot, S., Gille, S., Girton, J., Gregg, M., Hallberg, R., Kunze, E., Naveira Garabato, A., Phillips, H., Pinkel, R., Polzin, K., Sanford, T., Simmons, H., and Speer, K.: Using global arrays to investigate internal-waves and mixing, in: Proceedings of the OceanObs'09 Conference: Sustained Ocean Observations and Information for Society, Venice, Italy, Venice, Italy, 21–25 September 2009, Vol. 2, https://doi.org/10.5270/OceanObs09.cwp.58, 2009.
Naveira-Garabato, A. C.: A perspective on the future of physical oceanography, Philos. T. R. Soc. A, 370, 5480–5511, 2012.
Nikurashin, M. and Ferrari, R.: Radiation and dissipation of internal waves generated by geostrophic flows impinging on small-scale topography: Application to the Southern Ocean, J. Phys. Oceanogr., 40, 2025–2042, 2010.
Nikurashin, M. and Legg, S.: A mechanism for local dissipation of internal tides generated at rough topography, J. Phys. Oceanogr., 41, 378–395, 2011.
Nikurashin, M., Vallis, G. K., and Adcroft, A.: Routes to energy dissipation for geostrophic flows in the Southern Ocean, Nat. Geosci., 6, 48–51, 2013.
Park, J. J., Kim, K., and Schmitt, R. W.: Global distribution of the decay timescale of mixed layer inertial motions observed by satellite-tracked drifters, J. Geophys. Res.-Ocean, 114, C11010, https://doi.org/10.1029/2008JC005216, 2009.
Patoux, J., Yuan, X., and Li, C.: Satellite-based midlatitude cyclone statistics over the Southern Ocean: 1. Scatterometer-derived pressure fields and storm tracking, J. Geophys. Res.-Atmos., 114, D04105, https://doi.org/10.1029/2008JD010873, 2009.
Price, J. F.: Upper ocean response to a hurricane, J. Phys. Oceanogr., 11, 153–175, 1981.
Rath, W., Greatbatch, R. J., and Zhai, X.: Reduction of near-inertial energy through the dependence of wind stress on the ocean-surface velocity, J. Geophys. Res.-Oceans, 118, 2761–2773, 2013.
Rath, W., Greatbatch, R. J., and Zhai, X.: On the spatial and temporal distribution of near-inertial energy in the Southern Ocean, J. Geophys. Res.-Oceans, 119, 359–376, https://doi.org/10.1002/2013JC009246, 2014.
Reffray, G., Bourdalle-Badie, R., and Calone, C.: Modelling turbulent vertical mixing sensitivity using a 1-D version of NEMO, Geosci. Model Dev., 8, 69–86, https://doi.org/10.5194/gmd-8-69-2015, 2015.
Renault, L., Molemaker, M., McWilliams, J., Shchepetkin, A., Lemarié, F., Chelton, D., Illig, S., and Hall, A.: Modulation of wind-work by oceanic current interaction with the atmosphere, J. Phys. Oceanogr., 46, 1685–1704 https://doi.org/10.1175/JPO-D-15-0232.1, 2016.
Rintoul, S., Hughes, C., and Olbers, D.: The Antarctic Circumpolar Current System, in: Ocean Circulation and Climate, edited by: Siedler, G., Church, J., and Gould, J., Academic Press, New York, 271–302, 2001.
Sasaki, H., Klein, P., Qiu, B., and Sasai, Y.: Impact of oceanic-scale interactions on the seasonal modulation of ocean dynamics by the atmosphere, Nat. Comm., 5, https://doi.org/10.1038/ncomms6636, 2014.
Sheen, K. L. and Coauthors: Rates and mechanisms of turbulent dissipation and mixing in the Southern Ocean: Results from the Diapycnal and Isopycnal Mixing Experiment in the Southern Ocean (DIMES), J. Geophys. Res.-Oceans, 118, 2774–2792, 2013.
Smith, K. S. and G. K. Vallis: The scales and equilibration of midocean eddies: Forced-dissipative flow, J. Phys. Oceanogr., 32, 1699–1721, 2002.
Soufflet, Y., Marchesiello, P., Lemarié, F., Jouanno, J., Capet, X., Debreu, L., and Benshila, R.: On effective resolution in ocean models, Ocean Model., 98, 36–50, 2016.
Shchepetkin, A. F. and McWilliams, J. C.: The regional oceanic modeling system (ROMS) – a split-explicit, free-surface, topography-following-coordinate oceanic model, Ocean Model., 9, 347–404, 2005.
Shih, L. H., Koseff, J. R., Ivey, G. N., andFerziger, J. H.: Parameterization of turbulent fluxes and scales using homogeneous sheared stably stratified turbulence simulations, J. Fluid Mech., 525, 193–214, 2005.
Shchepetkin, A. F. and McWilliams, J. C.: The regional oceanic modeling system (ROMS): a split-explicit, free-surface, topography-following-coordinate oceanic model, Ocean Model., 9, 347–404, 2005.
Ulbrich, U., Leckebusch, G. C., and Pinto, J. G.: Extra-tropical cyclones in the present and future climate: a review, Theor. Appl. Climatol., 96, 117–131, 2009.
Vanneste J.: Balance and spontaneous wave generation in geophysical flows, Ann. Rev. Fluid Mech., 45, 147–172, 2013.
Vincent, E. M., Lengaigne, M., Madec, G., Vialard, J., Samson, G., Jourdain, N. C., Menkes, C. E., and Jullien, S.: Processes setting the characteristics of sea surface cooling induced by tropical cyclones, J. Geophys. Res., 117, C02020, https://doi.org/10.1029/2011JC007396, 2012.
Wainer, I., Taschetto, A., Soares, J., de Oliveira, A. P., Otto-Bliesner, B., and Brady, E.: Intercomparison of heat fluxes in the South Atlantic – Part I: the seasonal cycle, J. Climate, 16, 706–714, 2003.
Walin, G.: On the relation between sea surface heat flow and thermal circulation in the ocean, Tellus, 34, 187–195, 1982.
Waterman, S., Naveira Garabato, A. C., and Polzin, K. L.: Internal Waves and Turbulence in the Antarctic Circumpolar Current, J. Phys. Oceanogr., 43, 259–282, 2013.
Webb, D. J., de Cuevas, B. A., and Richmond, C. S.: Improved advection schemes for ocean models, J. Atmos. Ocean. Technol., 15, 1171–1187, 1998.
Wu, L., Jing, Z., Riser, S., and Visbeck, M.: Seasonal and spatial variations of Southern Ocean diapycnal mixing from Argo profiling floats, Nat. Geosci., 4, 363–366, 2011.
Wunsch, C.: The work done by the wind on the oceanic general circulation, J. Phys. Oceanogr., 28, 2332–2340, 1998.
Yuan, X., Patoux, J., and Li, C.: Satellite-based midlatitude cyclone statistics over the Southern Ocean: 2. Tracks and surface fluxes, J. Geophys. Res.-Atmos., 114, D04106, https://doi.org/10.1029/2008JD010874, 2009.
Zhai, X., Greatbatch, R. J., and Sheng, J.: Advective spreading of storm-induced inertial oscillations in a model of the northwest Atlantic Ocean, Geophys. Res. Lett., 31, L14315, https://doi.org/10.1029/2004GL020084, 2004.
Zhai, X., Greatbatch, R. J., and Sheng, J.: Doppler-Shifted Inertial Oscillations on a β Plane, J. Phys. Oceanogr., 35, 1480–1488, 2005.
Zhai, X., Greatbatch, R. J., and Zhao, J.: Enhanced vertical propagation of storm-induced near-inertial energy in an eddying ocean channel model, Geophys. Res. Lett., 32, L18602, https://doi.org/10.1029/2005GL023643, 2005.
Zhai, X., Greatbatch, R. J., Eden, C., and Hibiya, T.: On the loss of wind-induced near-inertial energy to turbulent mixing in the upper ocean, J. Phys. Oceanogr., 39, 3040–3045, 2009.
Short summary
The aim of this study is to clarify the role of the Southern Ocean storms on interior mixing and meridional overturning circulation. A periodic and idealized configuration of the NEMO model has been designed to represent the key physical processes of a zonal portion of the Southern Ocean. Challenging issues concerning how numerical models are able to represent interior mixing forced by high-frequency winds are exposed and discussed, particularly in the context of the overturning circulation.
The aim of this study is to clarify the role of the Southern Ocean storms on interior mixing and...
