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. 2022 Dec 10;13:7660. doi: 10.1038/s41467-022-35413-z

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© The Author(s) 2022

Open Access This article is licensed under a Creative Commons Attribution 4.0 International License, which permits use, sharing, adaptation, distribution and reproduction in any medium or format, as long as you give appropriate credit to the original author(s) and the source, provide a link to the Creative Commons license, and indicate if changes were made. The images or other third party material in this article are included in the article’s Creative Commons license, unless indicated otherwise in a credit line to the material. If material is not included in the article’s Creative Commons license and your intended use is not permitted by statutory regulation or exceeds the permitted use, you will need to obtain permission directly from the copyright holder. To view a copy of this license, visit http://creativecommons.org/licenses/by/4.0/.

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Fig. 4 — Surface water temperature (a) and salinity (b) defined as the mean of the 0–20 m depth interval, Polar Water (PW) core temperature (c), salinity (d), and layer thickness (g). Atlantic Water (AW) core temperature (e), salinity (f), and depth of the upper boundary of AW (h). In (d) PW and (f) AW core salinity is presented north (light gray) and south (black) of 73.5°N to show difference in trends. Division north and south of 73.5°N can be seen on supplementary Fig. 5 for all metrics. A 5-year running mean filter was applied to emphasize trends since 1980 (orange lines). Error bars indicate the standard error.