Articles | Volume 17, issue 1
Ocean Sci., 17, 111–129, 2021
Ocean Sci., 17, 111–129, 2021

Research article 18 Jan 2021

Research article | 18 Jan 2021

Circulation timescales of Atlantic Water in the Arctic Ocean determined from anthropogenic radionuclides

Anne-Marie Wefing et al.

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Cited articles

Alkire, M. B., Rember, R., and Polyakov, I.: Discrepancy in the Identification of the Atlantic/Pacific Front in the Central Arctic Ocean: NO Versus Nutrient Relationships, Geophys. Res. Lett., 46, 3843–3852,, 2019. a, b, c
Årthun, M., Eldevik, T., and Smedsrud, L. H.: The Role of Atlantic Heat Transport in Future Arctic Winter Sea Ice Loss, J. Climate, 32, 3327–3341,, 2019. a
Bauch, D., van der Loeff, M. R., Andersen, N., Torres-Valdes, S., Bakker, K., and Abrahamsen, E. P.: Origin of Freshwater and Polynya Water in the Arctic Ocean Halocline in Summer 2007, Prog. Oceanogr., 91, 482–495,, 2011. a
Carmack, E., Polyakov, I., Padman, L., Fer, I., Hunke, E., Hutchings, J., Jackson, J., Kelley, D., Kwok, R., Layton, C., Melling, H., Perovich, D., Persson, O., Ruddick, B., Timmermans, M.-L., Toole, J., Ross, T., Vavrus, S., and Winsor, P.: Toward Quantifying the Increasing Role of Oceanic Heat in Sea Ice Loss in the New Arctic, B. Am. Meteorol. Soc., 96, 2079–2105,, 2015. a
Casacuberta, N., Masqué, P., Henderson, G., Rutgers van-der-Loeff, M., Bauch, D., Vockenhuber, C., Daraoui, A., Walther, C., Synal, H.-A., and Christl, M.: First 236U Data from the Arctic Ocean and Use of 236U/238U and 129I/236U as a New Dual Tracer, Earth Planet Sc. Lett., 440, 127–134,, 2016. a, b, c, d, e
Short summary
Atlantic Water that carries heat and anthropogenic carbon into the Arctic Ocean plays an important role in the Arctic sea-ice cover decline, but its pathways and travel times remain unclear. Here we used two radionuclides of anthropogenic origin (129I and 236U) to track Atlantic-derived waters along their way through the Arctic Ocean, estimating their travel times and mixing properties. Results help to understand how future changes in Atlantic Water properties will spread through the Arctic.