Articles | Volume 17, issue 1
Ocean Sci., 17, 59–90, 2021
Ocean Sci., 17, 59–90, 2021
Research article
13 Jan 2021
Research article | 13 Jan 2021

Antarctic Bottom Water and North Atlantic Deep Water in CMIP6 models

Céline Heuzé

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Cited articles

Armour, K.: Energy budget constraints on climate sensitivity in light of inconstant climate feedbacks, Nat. Clim. Change, 7, 331–335,, 2017. a
Årthun, M., Eldevik, T., and Smedsrud, L.: The Role of Atlantic Heat Transport in Future Arctic Winter Sea Ice Loss, J. Climate, 32, 3327–3341,, 2019. a
Ba, J., Keenlyside, N., Latif, M., Park, W., Ding, H., Lohmann, K., Mignot, J., Menary, M., Otterå, O., Wouters, B., and Salas y Melia, D.: A multi-model comparison of Atlantic multidecadal variability, Clim. Dynam., 43,, 2014. a
Beadling, R., Russell, J., Stouffer, R., Mazloff, M., Talley, L., Goodman, P., Sallée, J., Hewittd, H., Hyder, P., and Pandde, A.: Representation of Southern Ocean properties across Coupled Model Intercomparison Project generations: CMIP3 to CMIP6, J. Climate, EOR,, 2020. a, b, c, d, e, f
Behrens, E., Rickard, G., Morgenstern, O., Martin, T., Osprey, A., and Joshi, M.: Southern Ocean deep convection in global climate models: A driver for variability of subpolar gyres and Drake Passage transport on decadal timescales, J. Geophys. Res.-Oceans, 121, 3905–3925,, 2016. a
Short summary
Dense waters sinking by Antarctica and in the North Atlantic control global ocean currents and carbon storage. We need to know how these change with climate change, and thus we need accurate climate models. Here we show that dense water sinking in the latest models is better than in the previous ones, but there is still too much water sinking. This impacts how well models represent the deep ocean density and the deep currents globally. We also suggest ways to improve the models.