Articles | Volume 16, issue 5
https://doi.org/10.5194/essd-16-2165-2024
© Author(s) 2024. This work is distributed under
the Creative Commons Attribution 4.0 License.
the Creative Commons Attribution 4.0 License.
https://doi.org/10.5194/essd-16-2165-2024
© Author(s) 2024. This work is distributed under
the Creative Commons Attribution 4.0 License.
the Creative Commons Attribution 4.0 License.
Predictive mapping of organic carbon stocks in surficial sediments of the Canadian continental margin
Department of Biological Sciences, University of Victoria, Victoria, British Columbia, V8P 5C2, Canada
Susanna D. Fuller
Oceans North, Halifax, Nova Scotia, B3J 1E6, Canada
Dipti Hingmire
School of Earth and Ocean Sciences (SEOS), University of Victoria, Victoria, British Columbia, V8P 5C2, Canada
Paul G. Myers
Department of Earth and Atmospheric Sciences, University of Alberta, Edmonton, Alberta, T6G 2E3, Canada
Angelica Peña
Institute of Ocean Sciences, Fisheries and Ocean Canada, Sidney, British Columbia, V8L 4B2, Canada
Clark Pennelly
Department of Earth and Atmospheric Sciences, University of Alberta, Edmonton, Alberta, T6G 2E3, Canada
Julia K. Baum
Department of Biological Sciences, University of Victoria, Victoria, British Columbia, V8P 5C2, Canada
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Tyler Pelle, Paul G. Myers, Andrew Hamilton, Matthew Mazloff, Krista M. Soderlund, Lucas Beem, Donald D. Blankenship, Cyril Grima, Feras Habbal, Mark Skidmore, and Jamin S. Greenbaum
Ocean Sci., 22, 187–208, https://doi.org/10.5194/os-22-187-2026, https://doi.org/10.5194/os-22-187-2026, 2026
Short summary
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Here, we develop and run a high-resolution ocean model of Jones Sound from 2003–2016 and characterize circulation into, out of, and within the sound as well as associated sea ice and productivity cycles. Atmospheric and ocean warming drives sea ice decline, which enhances biological productivity due to the increased light availability. These results highlight the utility of high-resolution models in simulating complex waterways and the need for sustained oceanographic measurements in the sound.
Xiner Wu, Anne de Vernal, and Paul G. Myers
EGUsphere, https://doi.org/10.22541/essoar.176538434.49305238/v2, https://doi.org/10.22541/essoar.176538434.49305238/v2, 2026
This preprint is open for discussion and under review for Climate of the Past (CP).
Short summary
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The ocean mixed layer needs to be correctly represented in climate models to provide reliable future projections. We evaluate the mixed layer depth in 15 climate models against reconstructions for the mid-Holocene North Atlantic. The lack of meltwater input to models causes the simulated mixed layer to be deeper than reconstructed in the Labrador Sea but does not affect the Nordic Seas. Deep ocean mixing in the Labrador Sea may be particularly sensitive to ice sheet melting under global warming.
Jan-Hendrik Malles, Ben Marzeion, and Paul G. Myers
Earth Syst. Dynam., 16, 347–377, https://doi.org/10.5194/esd-16-347-2025, https://doi.org/10.5194/esd-16-347-2025, 2025
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Glaciers in the high-latitude Northern Hemisphere (outside Greenland) are losing mass at roughly half the Greenland ice sheet's rate. Still, this is usually not included in the freshwater input data for ocean circulation models. Also, the submarine melt of glaciers (outside the ice sheets) has not been quantified yet. We tackle both issues by using a glacier model's output as additional fresh water for the ocean model and by using the ocean model's output to model submarine melt.
Sacchidanandan Viruthasalam Pillai, M. Angelica Peña, Brandon J. McNabb, William J. Burt, and Philippe D. Tortell
EGUsphere, https://doi.org/10.5194/egusphere-2023-2851, https://doi.org/10.5194/egusphere-2023-2851, 2023
Preprint archived
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We investigated how hyperspectral optical data collected in the North Pacific can be used to determine the phytoplankton community composition. We used the optically derived infomation of the phytoplankton community to examine the phytoplankton sizes, oceanographic controls and links to other biogeochemical variables. This work was motivated by the upcoming launch of the PACE satellite by NASA and the increased availability of hyperspectral optical measurements in oceanographic studies.
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Short summary
Improved mapping of surficial seabed sediment organic carbon is vital for best-practice marine management. Here, using systematic data review, data unification process and machine learning techniques, the first national predictive maps were produced for Canada at 200 m resolution. We show fine-scale spatial variation of organic carbon across the continental margin and estimate the total standing stock in the top 30 cm of the sediment to be 10.9 Gt.
Improved mapping of surficial seabed sediment organic carbon is vital for best-practice marine...
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