Articles | Volume 22, issue 3
https://doi.org/10.5194/os-22-1763-2026
© Author(s) 2026. This work is distributed under
the Creative Commons Attribution 4.0 License.
the Creative Commons Attribution 4.0 License.
https://doi.org/10.5194/os-22-1763-2026
© Author(s) 2026. This work is distributed under
the Creative Commons Attribution 4.0 License.
the Creative Commons Attribution 4.0 License.
On the fate of the Irminger Current water and its impact on the convection region in the Irminger Sea – a Lagrangian model study
Nora Fried
CORRESPONDING AUTHOR
Department of Ocean Systems, NIOZ, Royal Netherlands Institute for Sea Research, 1797 SZ Texel, the Netherlands
Institue for Landscape Ecology, University of Münster, 48149 Münster, Germany
Renske Gelderloos
Faculty of Civil Engineering and Geosciences, Delft University of Technology, 2628 CD Delft, the Netherlands
Department of Earth and Planetary Sciences, The Johns Hopkins University, Baltimore, MD 21218, USA
Oliver J. Tooth
National Oceanography Centre, Southampton, SO14 4ZH, United Kingdom
Caroline A. Katsman
Faculty of Civil Engineering and Geosciences, Delft University of Technology, 2628 CD Delft, the Netherlands
M. Femke de Jong
Department of Ocean Systems, NIOZ, Royal Netherlands Institute for Sea Research, 1797 SZ Texel, the Netherlands
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René M. van Westen, Caroline A. Katsman, and Dewi Le Bars
Ocean Sci., 22, 1353–1376, https://doi.org/10.5194/os-22-1353-2026, https://doi.org/10.5194/os-22-1353-2026, 2026
Short summary
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The Atlantic Meridional Overturning Circulation (AMOC) modulates the global climate and dynamic sea level. A transition of the AMOC to a much weaker state would cause a redistribution of dynamic sea level across the global ocean surface. Here, we analyse climate model simulations to investigate dynamic sea-level changes associated with a collapsing AMOC. Under an AMOC collapse, the dynamic sea level rises substantially in the North Atlantic Ocean.
Aleksandr M. Fedorov, M. Femke De Jong, Claudia E. Wieners, Elodie Duyck, and Henk A. Dijkstra
EGUsphere, https://doi.org/10.5194/egusphere-2026-918, https://doi.org/10.5194/egusphere-2026-918, 2026
Short summary
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Deep ocean mixing in the North Atlantic helps power major currents, but it is weakening as the surface warms. We used a high-resolution ocean model and separate experiments that added either extra heat loss, extra wind, or both during Greenland storm events. Extra heat loss caused most of the deep mixing, but strong winds also helped by mixing salty water upward and removing the fresh surface layer early in winter. This wind effect may slow the future decline of deep mixing.
Dominik Fahrner, Donald Slater, Aman KC, Claudia Cenedese, David A. Sutherland, Ellyn Enderlin, Femke de Jong, Kristian K. Kjeldsen, Michael Wood, Peter Nienow, Sophie Nowicki, and Till Wagner
Earth Syst. Sci. Data Discuss., https://doi.org/10.5194/essd-2023-411, https://doi.org/10.5194/essd-2023-411, 2023
Preprint withdrawn
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Marine-terminating glaciers can lose mass through frontal ablation, which comprises submarine and surface melting, and iceberg calving. We estimate frontal ablation for 49 marine-terminating glaciers in Greenland by combining existing, satellite derived data and calculating volume change near the glacier front over time. The dataset offers exciting opportunities to study the influence of climate forcings on marine-terminating glaciers in Greenland over multi-decadal timescales.
Oliver John Tooth, Helen Louise Johnson, Chris Wilson, and Dafydd Gwyn Evans
Ocean Sci., 19, 769–791, https://doi.org/10.5194/os-19-769-2023, https://doi.org/10.5194/os-19-769-2023, 2023
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This study uses the trajectories of water parcels traced within an ocean model simulation to identify the pathways responsible for the seasonal cycle of dense water formation (overturning) in the eastern subpolar North Atlantic. We show that overturning seasonality is due to the fastest water parcels circulating within the eastern basins in less than 8.5 months. Slower pathways set the average strength of overturning in this region since water parcels cannot escape intense wintertime cooling.
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Short summary
This study investigates how much warm and saline subtropical-origin water flowing in the Irminger Current (IC) can enter the Irminger Sea convection region by releasing virtual particles in an ocean model. We show that one quarter of IC waters enter the convection region with the potential to increase local stratification. Our results suggest that changes in the water mass properties of the IC have the potential to influence the strength of deep convection in the Irminger Sea.
This study investigates how much warm and saline subtropical-origin water flowing in the...