Ocean Science
Ocean Science
OS
Articles | Volume 22, issue 1
Articles | Volume 22, issue 1
https://doi.org/10.5194/os-22-17-2026
© Author(s) 2026. This work is distributed under
the Creative Commons Attribution 4.0 License.
https://doi.org/10.5194/os-22-17-2026
© Author(s) 2026. This work is distributed under
the Creative Commons Attribution 4.0 License.
Articles | Volume 22, issue 1
Research article
 | 
05 Jan 2026
Research article |  | 05 Jan 2026

Reduced cooling in the Norwegian Atlantic Slope Current: investigating mechanisms of change from 30 years of observations

Till M. Baumann, Øystein Skagseth, Randi B. Ingvaldsen, and Kjell Arne Mork

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Cited articles

Almeida, L., Kolodziejczyk, N., and Lique, C.: Large Scale Salinity Anomaly Has Triggered the Recent Decline of Winter Convection in the Greenland Sea, Geophysical Research Letters, 50, https://doi.org/10.1029/2023GL104766, 2023. a
Andersson, M., Orvik, K. A., Lacasce, J. H., Koszalka, I., and Mauritzen, C.: Variability of the Norwegian Atlantic Current and associated eddy field from surface drifters, Journal of Geophysical Research: Oceans, 116, https://doi.org/10.1029/2011JC007078, 2011. a
Årthun, M., Eldevik, T., Viste, E., Drange, H., Furevik, T., Johnson, H. L., and Keenlyside, N. S.: Skillful prediction of northern climate provided by the ocean, Nature Communications, 8, https://doi.org/10.1038/ncomms15875, 2017. a, b
Asbjørnsen, H., Årthun, M., Skagseth, Ø., and Eldevik, T.: Mechanisms Underlying Recent Arctic Atlantification, Geophysical Research Letters, 47, https://doi.org/10.1029/2020GL088036, 2020. a
Bashmachnikov, I. L., Raj, R. P., Golubkin, P., and Kozlov, I. E.: Heat Transport by Mesoscale Eddies in the Norwegian and Greenland Seas, Journal of Geophysical Research: Oceans, 128, https://doi.org/10.1029/2022JC018987, 2023. a, b, c
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Thirty years of in situ hydrographic measurements combined with satellite observations reveal that Atlantic Water flowing northward along Norway is cooling less than before. We find that reduced surface heat loss and faster advection are likely drivers, though their relative effect varies over time. These changes result in more ocean heat reaching the Arctic, with likely impacts on climate, sea ice, and marine ecosystems.
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