Articles | Volume 8, issue 10
Geosci. Model Dev., 8, 3119–3130, 2015

Special issue: Nucleus for European Modelling of the Ocean - NEMO

Geosci. Model Dev., 8, 3119–3130, 2015

Development and technical paper 06 Oct 2015

Development and technical paper | 06 Oct 2015

Increasing vertical mixing to reduce Southern Ocean deep convection in NEMO3.4

C. Heuzé et al.

Related authors

Antarctic Bottom Water and North Atlantic Deep Water in CMIP6 models
Céline Heuzé
Ocean Sci., 17, 59–90,,, 2021
Short summary
Freshwater in the Arctic Ocean 2010–2019
Amy Solomon, Céline Heuzé, Benjamin Rabe, Sheldon Bacon, Laurent Bertino, Patrick Heimbach, Jun Inoue, Doroteaciro Iovino, Ruth Mottram, Xiangdong Zhang, Yevgeny Aksenov, Ronan McAdam, An Nguyen, Roshin P. Raj, and Han Tang
Ocean Sci. Discuss.,,, 2020
Preprint under review for OS
Short summary
Spaceborne infrared imagery for early detection and cause of Weddell Polynya openings
Céline Heuzé and Adriano Lemos
The Cryosphere Discuss.,,, 2020
Preprint under review for TC
Short summary
Influence of initial stratification, wind and sea ice on the modelled oceanic circulation in Nares Strait, northwest Greenland
Lovisa Waldrop Bergman and Céline Heuzé
Ocean Sci. Discuss.,,, 2018
Preprint withdrawn
Short summary
North Atlantic deep water formation and AMOC in CMIP5 models
Céline Heuzé
Ocean Sci., 13, 609–622,,, 2017
Short summary

Related subject area

Implementation and assessment of a carbonate system model (Eco3M-CarbOx v1.1) in a highly dynamic Mediterranean coastal site (Bay of Marseille, France)
Katixa Lajaunie-Salla, Frédéric Diaz, Cathy Wimart-Rousseau, Thibaut Wagener, Dominique Lefèvre, Christophe Yohia, Irène Xueref-Remy, Brian Nathan, Alexandre Armengaud, and Christel Pinazo
Geosci. Model Dev., 14, 295–321,,, 2021
Short summary
Numerical integrators for Lagrangian oceanography
Tor Nordam and Rodrigo Duran
Geosci. Model Dev., 13, 5935–5957,,, 2020
Short summary
Multi-grid algorithm for passive tracer transport in the NEMO ocean circulation model: a case study with the NEMO OGCM (version 3.6)
Clément Bricaud, Julien Le Sommer, Gurvan Madec, Christophe Calone, Julie Deshayes, Christian Ethe, Jérôme Chanut, and Marina Levy
Geosci. Model Dev., 13, 5465–5483,,, 2020
Short summary
Introducing LAB60: A 1∕60° NEMO 3.6 numerical simulation of the Labrador Sea
Clark Pennelly and Paul G. Myers
Geosci. Model Dev., 13, 4959–4975,,, 2020
Short summary
Development of an atmosphere–ocean coupled operational forecast model for the Maritime Continent: Part 1 – Evaluation of ocean forecasts
Bijoy Thompson, Claudio Sanchez, Boon Chong Peter Heng, Rajesh Kumar, Jianyu Liu, Xiang-Yu Huang, and Pavel Tkalich
Geosci. Model Dev. Discuss.,,, 2020
Revised manuscript accepted for GMD
Short summary

Cited articles

Adcroft, A.: Representation of topography by porous barriers and objective interpolation of topographic data, Ocean Model., 67, 13–27,, 2013.
Axell, L. B.: Wind-driven internal waves and Langmuir circulations in a numerical ocean model of the southern Baltic Sea, J. Geophys. Res., 107, 3204,, 2002.
Azaneu, M., Kerr, R., and Mata, M. M.: Assessment of the representation of Antarctic Bottom Water properties in the ECCO2 reanalysis, Ocean Sci., 10, 923–946,, 2014.
Bates, M. L., Griffies, S. M., and England, M. H.: A dynamic, embedded Lagrangian model for ocean climate models. Part I: Theory and implementation, Ocean Model., 59, 51–59,, 2012.
Briegleb, B. P., Danabasoglu, G., and Large, W.: An overflow parameterization for the ocean component of the community climate system model, Tech. rep, National Center for Atmospheric Research, Boulder, Colorado, 2010.
Short summary
Most ocean models, including NEMO, have unrealistic Southern Ocean deep convection. That is, through extensive areas of the Southern Ocean, they exhibit convection from the surface of the ocean to the sea floor. We find this convection to be an issue as it impacts the whole ocean circulation, notably strengthening the Antarctic Circumpolar Current. Using sensitivity experiments, we show that counter-intuitively the vertical mixing needs to be enhanced to reduce this spurious convection.