Articles | Volume 17, issue 20
https://doi.org/10.5194/bg-17-4937-2020
https://doi.org/10.5194/bg-17-4937-2020
Research article
 | 
16 Oct 2020
Research article |  | 16 Oct 2020

Using 226Ra and 228Ra isotopes to distinguish water mass distribution in the Canadian Arctic Archipelago

Chantal Mears, Helmuth Thomas, Paul B. Henderson, Matthew A. Charette, Hugh MacIntyre, Frank Dehairs, Christophe Monnin, and Alfonso Mucci

Related authors

The coupled oxygen and carbon dynamics in the subsurface waters of the Gulf and Lower St. Lawrence Estuary and Implications for Artificial Oxygenation
William A. Nesbitt, Samuel W. Stevens, Alfonso O. Mucci, Lennart Gerke, Toste Tanhua, Gwénaëlle Chaillou, and Douglas W. R. Wallace
EGUsphere, https://doi.org/10.5194/egusphere-2025-2400,https://doi.org/10.5194/egusphere-2025-2400, 2025
This preprint is open for discussion and under review for Ocean Science (OS).
Short summary
Role of sea ice, stratification, and near-inertial oscillations in shaping the upper Siberian Arctic Ocean currents
Igor V. Polyakov, Andrey V. Pnyushkov, Eddy C. Carmack, Matthew Charette, Kyoung-Ho Cho, Steven Dykstra, Jari Haapala, Jinyoung Jung, Lauren Kipp, and Eun Jin Yang
EGUsphere, https://doi.org/10.5194/egusphere-2025-2316,https://doi.org/10.5194/egusphere-2025-2316, 2025
This preprint is open for discussion and under review for Ocean Science (OS).
Short summary
Influences on Chemical Distribution Patterns across the west Greenland Shelf: The Roles of Ocean Currents, Sea Ice Melt, and Freshwater Runoff
Claudia Elena Schmidt, Tristan Zimmermann, Katarzyna Koziorowska, Daniel Pröfrock, and Helmuth Thomas
EGUsphere, https://doi.org/10.5194/egusphere-2025-291,https://doi.org/10.5194/egusphere-2025-291, 2025
Short summary
Evaluating ocean alkalinity enhancement as a carbon dioxide removal strategy in the North Sea
Feifei Liu, Ute Daewel, Jan Kossack, Kubilay Timur Demir, Helmuth Thomas, and Corinna Schrum
EGUsphere, https://doi.org/10.5194/egusphere-2025-81,https://doi.org/10.5194/egusphere-2025-81, 2025
Short summary
Assessing the impacts of simulated ocean alkalinity enhancement on viability and growth of nearshore species of phytoplankton
Jessica L. Oberlander, Mackenzie E. Burke, Cat A. London, and Hugh L. MacIntyre
Biogeosciences, 22, 499–512, https://doi.org/10.5194/bg-22-499-2025,https://doi.org/10.5194/bg-22-499-2025, 2025
Short summary

Related subject area

Biogeochemistry: Coastal Ocean
Effects of submarine groundwater on nutrient concentration and primary production in a deep bay of the Japan Sea
Menghong Dong, Xinyu Guo, Takuya Matsuura, Taichi Tebakari, and Jing Zhang
Biogeosciences, 22, 2383–2402, https://doi.org/10.5194/bg-22-2383-2025,https://doi.org/10.5194/bg-22-2383-2025, 2025
Short summary
The bacteria–protist link as a main route of dissolved organic matter across contrasting productivity areas on the Patagonian Shelf
M. Celeste López-Abbate, John E. Garzón-Cardona, Ricardo Silva, Juan-Carlos Molinero, Laura A. Ruiz-Etcheverry, Ana M. Martínez, Azul S. Gilabert, and Rubén J. Lara
Biogeosciences, 22, 2309–2325, https://doi.org/10.5194/bg-22-2309-2025,https://doi.org/10.5194/bg-22-2309-2025, 2025
Short summary
Ocean alkalinity enhancement (OAE) does not cause cellular stress in a phytoplankton community of the subtropical Atlantic Ocean
Librada Ramírez, Leonardo J. Pozzo-Pirotta, Aja Trebec, Víctor Manzanares-Vázquez, José L. Díez, Javier Arístegui, Ulf Riebesell, Stephen D. Archer, and María Segovia
Biogeosciences, 22, 1865–1886, https://doi.org/10.5194/bg-22-1865-2025,https://doi.org/10.5194/bg-22-1865-2025, 2025
Short summary
Reviews and syntheses: On increasing hypoxia in eastern boundary upwelling systems – zooplankton under metabolic stress
Leissing Frederick, Mauricio A. Urbina, and Ruben Escribano
Biogeosciences, 22, 1839–1852, https://doi.org/10.5194/bg-22-1839-2025,https://doi.org/10.5194/bg-22-1839-2025, 2025
Short summary
Technical note: Testing a new approach for the determination of N2 fixation rates by coupling a membrane equilibrator to a mass spectrometer for long-term observations
Sören Iwe, Oliver Schmale, and Bernd Schneider
Biogeosciences, 22, 1767–1779, https://doi.org/10.5194/bg-22-1767-2025,https://doi.org/10.5194/bg-22-1767-2025, 2025
Short summary

Cited articles

Aagaard, K. and Carmack, E. C.: The role of sea ice and other fresh water in the Arctic circulation, J. Geophys. Res., 94, 14485, https://doi.org/10.1029/JC094iC10p14485, 1989. 
Aagaard, K. and Carmack, E. C.: The Arctic Ocean and Climate: A Perspective, in The Polar Oceans and Their Role in Shaping the Global Environment, Geophys. Monogr. Ser., vol. 85, 5–20, AGU, Washington, D.C., USA, 1994. 
Aagaard, K., Coachman, L. K., and Carmack, E.: On the halocline of the Arctic Ocean, Deep-Sea Res. Pt. A, 28, 529–545, https://doi.org/10.1016/0198-0149(81)90115-1, 1981. 
Bacle, J., Carmack, E. C., and Ingram, R. G.: Water column structure and circulation under the North Water during spring transition: April–July 1998, Deep Sea Res. Part II Top. Stud. Oceanogr., 49(22–23), 4907–4925, https://doi.org/10.1016/S0967-0645(02)00170-4, 2002. 
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, Prog. Oceanogr., 35, 53–80, https://doi.org/10.1016/0079-6611(95)00005-2, 1995. 
Download

The requested paper has a corresponding corrigendum published. Please read the corrigendum first before downloading the article.

Short summary
Major research initiatives have been undertaken within the Arctic Ocean, highlighting this area's global importance and vulnerability to climate change. In 2015, the international GEOTRACES program addressed this importance by devoting intense research activities to the Arctic Ocean. Among various tracers, we used radium and carbonate system data to elucidate the functioning and vulnerability of the hydrographic regime of the Canadian Arctic Archipelago, bridging the Pacific and Atlantic oceans.
Share
Altmetrics
Final-revised paper
Preprint