Articles | Volume 22, issue 4
https://doi.org/10.5194/os-22-2267-2026
https://doi.org/10.5194/os-22-2267-2026
Research article
 | 
28 Jul 2026
Research article |  | 28 Jul 2026

Documenting the 2015–2017 freshening of the eastern Eurasian Basin of the Arctic Ocean and evaluating its drivers and consequences

Dolly More, Igor V. Polyakov, and Andrey V. Pnyushkov

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Cited articles

Aagaard, K. and Carmack, E. C.: The role of sea ice and other fresh water in the Arctic circulation, J. Geophys. Res.-Oceans, 94, 14485–14498, https://doi.org/10.1029/JC094iC10p14485, 1989. 
Aksenov, Y., Ivanov, V. V., Nurser, A. J. G., Bacon, S., Polyakov, I. V., Coward, A. C., Naveira-Garabato, A. C., and Beszczynska-Moeller, A.: The arctic circumpolar boundary current, J. Geophys. Res.-Oceans, 116, https://doi.org/10.1029/2010JC006637, 2011. 
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Bauch, D., Schlosser, P., and Fairbanks, R. G.: Freshwater balance and the sources of deep and bottom waters in the Arctic Ocean inferred from the distribution of H218O, Progress in Oceanography, 35, 53–80, https://doi.org/10.1016/0079-6611(95)00005-2, 1995. 
Bauch, D., Hölemann, J. A., Nikulina, A., Wegner, C., Janout, M. A., Timokhov, L. A., and Kassens, H.: Correlation of river water and local sea-ice melting on the Laptev Sea shelf (Siberian Arctic), J. Geophys. Res.-Oceans, 118, 550–561, https://doi.org/10.1002/jgrc.20076, 2013. 
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Short summary
The Arctic Ocean is changing fast, and river runoff plays a key role. Between 2015 and 2017, unusually large flows from Siberia’s Yenisey and Ob Rivers made the eastern Arctic much fresher. This stabilized the ocean, slowed currents, and reduced heat from below, allowing thicker sea ice to persist through summer. The study shows how bursts of river discharge can reshape the Arctic and help sea ice survive.
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