Articles | Volume 18, issue 12
https://doi.org/10.5194/tc-18-5735-2024
© 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/tc-18-5735-2024
© Author(s) 2024. This work is distributed under
the Creative Commons Attribution 4.0 License.
the Creative Commons Attribution 4.0 License.
Research article
| 
10 Dec 2024
Research article |
| 10 Dec 2024
| 10 Dec 2024
The macronutrient and micronutrient (iron and manganese) content of icebergs
Jana Krause
GEOMAR Helmholtz Centre for Ocean Research Kiel, Kiel, Germany
Dustin Carroll
Moss Landing Marine Laboratories, San José State University, Moss Landing, California, USA
Juan Höfer
Escuela de Ciencias del Mar, Pontificia Universidad Católica de Valparaíso, Valparaíso, Chile
Centro FONDAP de Investigación en Dinámica de Ecosistemas Marinos de Altas Latitudes (IDEAL), Valdivia, Chile
Jeremy Donaire
Facultad de Ingeniería, Universidad Andrés Bello, Viña del Mar, Chile
Faculty of Sciences and Bioengineering Sciences, Vrije Universiteit Brussel, Brussels, Belgium
Eric P. Achterberg
GEOMAR Helmholtz Centre for Ocean Research Kiel, Kiel, Germany
Emilio Alarcón
Centro FONDAP de Investigación en Dinámica de Ecosistemas Marinos de Altas Latitudes (IDEAL), Valdivia, Chile
Te Liu
GEOMAR Helmholtz Centre for Ocean Research Kiel, Kiel, Germany
Lorenz Meire
Department of Estuarine & Delta Systems, Royal Netherlands Institute for Sea Research, Yerseke, the Netherlands
Greenland Climate Research Centre, Greenland Institute of Natural Resources, Nuuk, Greenland
Kechen Zhu
Department of Ocean Science and Engineering, Southern University of Science and Technology, Shenzhen, China
Department of Ocean Science and Engineering, Southern University of Science and Technology, Shenzhen, China
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Anneke L. Vries, Willem Jan van de Berg, Brice Noël, Lorenz Meire, and Michiel R. van den Broeke
The Cryosphere, 19, 3897–3914, https://doi.org/10.5194/tc-19-3897-2025, https://doi.org/10.5194/tc-19-3897-2025, 2025
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Freshwater flows into Greenland's fjords from various sources. Solid ice discharge (e.g. calving icebergs) dominates freshwater input in the southeast and northwest. In contrast, in the southwest, runoff from the ice sheet and tundra are the most significant. Seasonal data revealed that fjord precipitation and tundra runoff contribute up to 11 % and 35 % of the monthly freshwater input, respectively. Our results provide valuable input for ocean models and for researchers studying fjord ecosystems.
Michael Dominik Tyka, Mengyang Zhou, Elizabeth Yankovsky, and Dustin Carroll
EGUsphere, https://doi.org/10.5194/egusphere-2025-3713, https://doi.org/10.5194/egusphere-2025-3713, 2025
This preprint is open for discussion and under review for Biogeosciences (BG).
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Quantification of the kinetics of the induced ocean CO2 uptake following application of marine carbon dioxide removal technologies (mCDR) is crucial for such technologies to gain scientific and social acceptance. Here, we compare two circulation models commonly used for this purpose and find substantial differences in their predictions. We analyze which physical aspects of the models contribute the most to the inter-model discrepancies, and thus require future research.
Aman KC, Ellyn M. Enderlin, Dominik Fahrner, Twila Moon, and Dustin Carroll
The Cryosphere, 19, 3089–3106, https://doi.org/10.5194/tc-19-3089-2025, https://doi.org/10.5194/tc-19-3089-2025, 2025
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The sum of ice flowing towards a glacier’s terminus and changes in the position of the terminus over time collectively makes up terminus ablation. We found that terminus ablation has more seasonal variability than previously concluded from flux-based estimates of ice discharge. The findings are of importance in understanding the timing and location of the freshwater input to the fjords and surrounding ocean basins affecting local and regional ecosystems and ocean properties.
Hinne Florian van der Zant, Olivier Sulpis, Jack J. Middelburg, Matthew P. Humphreys, Raphaël Savelli, Dustin Carroll, Dimitris Menemenlis, Kay Sušelj, and Vincent Le Fouest
EGUsphere, https://doi.org/10.5194/egusphere-2025-2244, https://doi.org/10.5194/egusphere-2025-2244, 2025
This preprint is open for discussion and under review for Geoscientific Model Development (GMD).
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We developed a model to simulate seafloor biogeochemical processes across a wide range of marine environments, from shallow coastal zones to deep-sea sediments. From this model, we derived a set of simple equations that predict how carbon, oxygen, and alkalinity are exchanged between sediments and overlying waters. These equations provide an efficient way to improve how ocean models represent seafloor interactions, which are often missing or overly simplified.
Hannah Krüger, Gerhard Schmiedl, Zvi Steiner, Zhouling Zhang, Eric P. Achterberg, and Nicolaas Glock
J. Micropalaeontol., 44, 193–211, https://doi.org/10.5194/jm-44-193-2025, https://doi.org/10.5194/jm-44-193-2025, 2025
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The biodiversity and abundance of benthic foraminifera tend to increase with distance within a transect from the Rainbow hydrothermal vent field. Miliolids dominate closer to the vents and may be better adapted to the potentially hydrothermal conditions than hyaline and agglutinated species. The reason for this remains unclear, but there are indications that elevated trace-metal concentrations in the porewater and intrusion of acidic hydrothermal fluids could have an influence on the foraminifera.
Raphaël Savelli, Dustin Carroll, Dimitris Menemenlis, Jonathan Lauderdale, Clément Bertin, Stephanie Dutkiewicz, Manfredi Manizza, Anthony Bloom, Karel Castro-Morales, Charles E. Miller, Marc Simard, Kevin W. Bowman, and Hong Zhang
EGUsphere, https://doi.org/10.5194/egusphere-2025-1707, https://doi.org/10.5194/egusphere-2025-1707, 2025
This preprint is open for discussion and under review for Geoscientific Model Development (GMD).
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Accounting for carbon and nutrients in rivers is essential for resolving carbon dioxide (CO2) exchanges between the ocean and the atmosphere. In this study, we add the effect of present-day rivers to a pioneering global-ocean biogeochemistry model. This study highlights the challenge for global ocean numerical models to cover the complexity of the flow of water and carbon across the Land-to-Ocean Aquatic Continuum.
Li-Qing Jiang, Amanda Fay, Jens Daniel Müller, Lydia Keppler, Dustin Carroll, Siv K. Lauvset, Tim DeVries, Judith Hauck, Christian Rödenbeck, Luke Gregor, Nicolas Metzl, Andrea J. Fassbender, Jean-Pierre Gattuso, Peter Landschützer, Rik Wanninkhof, Christopher Sabine, Simone R. Alin, Mario Hoppema, Are Olsen, Matthew P. Humphreys, Kumiko Azetsu-Scott, Dorothee C. E. Bakker, Leticia Barbero, Nicholas R. Bates, Nicole Besemer, Henry C. Bittig, Albert E. Boyd, Daniel Broullón, Wei-Jun Cai, Brendan R. Carter, Thi-Tuyet-Trang Chau, Chen-Tung Arthur Chen, Frédéric Cyr, John E. Dore, Ian Enochs, Richard A. Feely, Hernan E. Garcia, Marion Gehlen, Lucas Gloege, Melchor González-Dávila, Nicolas Gruber, Yosuke Iida, Masao Ishii, Esther Kennedy, Alex Kozyr, Nico Lange, Claire Lo Monaco, Derek P. Manzello, Galen A. McKinley, Natalie M. Monacci, Xose A. Padin, Ana M. Palacio-Castro, Fiz F. Pérez, Alizée Roobaert, J. Magdalena Santana-Casiano, Jonathan Sharp, Adrienne Sutton, Jim Swift, Toste Tanhua, Maciej Telszewski, Jens Terhaar, Ruben van Hooidonk, Anton Velo, Andrew J. Watson, Angelicque E. White, Zelun Wu, Hyelim Yoo, and Jiye Zeng
Earth Syst. Sci. Data Discuss., https://doi.org/10.5194/essd-2025-255, https://doi.org/10.5194/essd-2025-255, 2025
Preprint under review for ESSD
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This review article provides an overview of 60 existing ocean carbonate chemistry data products, encompassing a broad range of types, including compilations of cruise datasets, gap-filled observational products, model simulations, and more. It is designed to help researchers identify and access the data products that best support their scientific objectives, thereby facilitating progress in understanding the ocean's changing carbonate chemistry.
Gavin A. Schmidt, Kenneth D. Mankoff, Jonathan L. Bamber, Dustin Carroll, David M. Chandler, Violaine Coulon, Benjamin J. Davison, Matthew H. England, Paul R. Holland, Nicolas C. Jourdain, Qian Li, Juliana M. Marson, Pierre Mathiot, Clive R. McMahon, Twila A. Moon, Ruth Mottram, Sophie Nowicki, Anne Olivé Abelló, Andrew G. Pauling, Thomas Rackow, and Damien Ringeisen
EGUsphere, https://doi.org/10.5194/egusphere-2025-1940, https://doi.org/10.5194/egusphere-2025-1940, 2025
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The impact of increasing mass loss from the Greenland and Antarctic ice sheets has not so far been included in historical climate model simulations. This paper describes the protocols and data available for modeling groups to add this anomalous freshwater to their ocean modules to better represent the impacts of these fluxes on ocean circulation, sea ice, salinity and sea level.
Frank Förster, Sebastian Flöter, Lucie Sauzéat, Stéphanie Reynaud, Eric Achterberg, Alexandra Tsay, Christine Ferrier-Pagès, and Tom E. Sheldrake
EGUsphere, https://doi.org/10.5194/egusphere-2025-1713, https://doi.org/10.5194/egusphere-2025-1713, 2025
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Explosive volcanic eruptions produce ash that, upon ocean deposition, alters seawater chemistry by leaching or adsorbing metals. Corals like Stylophora pistillata incorporate these metals in its various compartments (tissue, symbionts and skeleton), with most metal changes appearing in the coral skeleton. We present a novel dataset of ash-seawater leaching results, trace metal analysis in the different coral compartments from cultured corals maintained under a control and ash exposed condition.
Clement Bertin, Vincent Le Fouest, Dustin Carroll, Stephanie Dutkiewicz, Dimitris Menemenlis, Atsushi Matsuoka, Manfredi Manizza, and Charles E. Miller
EGUsphere, https://doi.org/10.5194/egusphere-2025-973, https://doi.org/10.5194/egusphere-2025-973, 2025
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We adjusted a model of the Mackenzie River region to account for the riverine export of organic matter that affects light in the water. We show that such export causes a delay in the phytoplankton growth by two weeks and raises the water surface temperature by 1.7 °C. We found that temperature increase turns this coastal region from a sink of carbon dioxide to an emitter. Our findings suggest that rising exports of organic matter can significantly affect the carbon cycle in Arctic coastal areas.
Ingeborg Bussmann, Eric P. Achterberg, Holger Brix, Nicolas Brüggemann, Götz Flöser, Claudia Schütze, and Philipp Fischer
Biogeosciences, 21, 3819–3838, https://doi.org/10.5194/bg-21-3819-2024, https://doi.org/10.5194/bg-21-3819-2024, 2024
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Methane (CH4) is an important greenhouse gas and contributes to climate warming. However, the input of CH4 from coastal areas to the atmosphere is not well defined. Dissolved and atmospheric CH4 was determined at high spatial resolution in or above the North Sea. The atmospheric CH4 concentration was mainly influenced by wind direction. With our detailed study on the spatial distribution of CH4 fluxes we were able to provide a detailed and more realistic estimation of coastal CH4 fluxes.
Kristian Spilling, Jonna Piiparinen, Eric P. Achterberg, Javier Arístegui, Lennart T. Bach, Maria T. Camarena-Gómez, Elisabeth von der Esch, Martin A. Fischer, Markel Gómez-Letona, Nauzet Hernández-Hernández, Judith Meyer, Ruth A. Schmitz, and Ulf Riebesell
Biogeosciences, 20, 1605–1619, https://doi.org/10.5194/bg-20-1605-2023, https://doi.org/10.5194/bg-20-1605-2023, 2023
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We carried out an enclosure experiment using surface water off Peru with different additions of oxygen minimum zone water. In this paper, we report on enzyme activity and provide data on the decomposition of organic matter. We found very high activity with respect to an enzyme breaking down protein, suggesting that this is important for nutrient recycling both at present and in the future ocean.
Shao-Min Chen, Ulf Riebesell, Kai G. Schulz, Elisabeth von der Esch, Eric P. Achterberg, and Lennart T. Bach
Biogeosciences, 19, 295–312, https://doi.org/10.5194/bg-19-295-2022, https://doi.org/10.5194/bg-19-295-2022, 2022
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Oxygen minimum zones in the ocean are characterized by enhanced carbon dioxide (CO2) levels and are being further acidified by increasing anthropogenic atmospheric CO2. Here we report CO2 system measurements in a mesocosm study offshore Peru during a rare coastal El Niño event to investigate how CO2 dynamics may respond to ongoing ocean deoxygenation. Our observations show that nitrogen limitation, productivity, and plankton community shift play an important role in driving the CO2 dynamics.
Kai G. Schulz, Eric P. Achterberg, Javier Arístegui, Lennart T. Bach, Isabel Baños, Tim Boxhammer, Dirk Erler, Maricarmen Igarza, Verena Kalter, Andrea Ludwig, Carolin Löscher, Jana Meyer, Judith Meyer, Fabrizio Minutolo, Elisabeth von der Esch, Bess B. Ward, and Ulf Riebesell
Biogeosciences, 18, 4305–4320, https://doi.org/10.5194/bg-18-4305-2021, https://doi.org/10.5194/bg-18-4305-2021, 2021
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Upwelling of nutrient-rich deep waters to the surface make eastern boundary upwelling systems hot spots of marine productivity. This leads to subsurface oxygen depletion and the transformation of bioavailable nitrogen into inert N2. Here we quantify nitrogen loss processes following a simulated deep water upwelling. Denitrification was the dominant process, and budget calculations suggest that a significant portion of nitrogen that could be exported to depth is already lost in the surface ocean.
Neil J. Wyatt, Angela Milne, Eric P. Achterberg, Thomas J. Browning, Heather A. Bouman, E. Malcolm S. Woodward, and Maeve C. Lohan
Biogeosciences, 18, 4265–4280, https://doi.org/10.5194/bg-18-4265-2021, https://doi.org/10.5194/bg-18-4265-2021, 2021
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Using data collected during two expeditions to the South Atlantic Ocean, we investigated how the interaction between external sources and biological activity influenced the availability of the trace metals zinc and cobalt. This is important as both metals play essential roles in the metabolism and growth of phytoplankton and thus influence primary productivity of the oceans. We found seasonal changes in both processes that helped explain upper-ocean trace metal cycling.
Maximiliano J. Vergara-Jara, Mark J. Hopwood, Thomas J. Browning, Insa Rapp, Rodrigo Torres, Brian Reid, Eric P. Achterberg, and José Luis Iriarte
Ocean Sci., 17, 561–578, https://doi.org/10.5194/os-17-561-2021, https://doi.org/10.5194/os-17-561-2021, 2021
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Ash from the Calbuco 2015 eruption spread across northern Patagonia, the SE Pacific and the SW Atlantic. In the Pacific, a phytoplankton bloom corresponded closely to the volcanic ash plume, suggesting that ash fertilized this region of the ocean. No such fertilization was found in the Atlantic where nutrients plausibly supplied by ash were likely already in excess of phytoplankton demand. In Patagonia, the May bloom was more intense than usual, but the mechanistic link to ash was less clear.
Gerd Krahmann, Damian L. Arévalo-Martínez, Andrew W. Dale, Marcus Dengler, Anja Engel, Nicolaas Glock, Patricia Grasse, Johannes Hahn, Helena Hauss, Mark Hopwood, Rainer Kiko, Alexandra Loginova, Carolin R. Löscher, Marie Maßmig, Alexandra-Sophie Roy, Renato Salvatteci, Stefan Sommer, Toste Tanhua, and Hela Mehrtens
Earth Syst. Sci. Data Discuss., https://doi.org/10.5194/essd-2020-308, https://doi.org/10.5194/essd-2020-308, 2021
Preprint withdrawn
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The project "Climate-Biogeochemistry Interactions in the Tropical Ocean" (SFB 754) was a multidisciplinary research project active from 2008 to 2019 aimed at a better understanding of the coupling between the tropical climate and ocean circulation and the ocean's oxygen and nutrient balance. On 34 research cruises, mainly in the Southeast Tropical Pacific and the Northeast Tropical Atlantic, 1071 physical, chemical and biological data sets were collected.
Yu-Te Hsieh, Walter Geibert, E. Malcolm S. Woodward, Neil J. Wyatt, Maeve C. Lohan, Eric P. Achterberg, and Gideon M. Henderson
Biogeosciences, 18, 1645–1671, https://doi.org/10.5194/bg-18-1645-2021, https://doi.org/10.5194/bg-18-1645-2021, 2021
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The South Atlantic near 40° S is one of the high-productivity and most dynamic nutrient regions in the oceans, but the sources and fluxes of trace elements (TEs) to this region remain unclear. This study investigates seawater Ra-228 and provides important constraints on ocean mixing and dissolved TE fluxes to this region. Vertical mixing is a more important source than aeolian or shelf inputs in this region, but particulate or winter deep-mixing inputs may be required to balance the TE budgets.
Alia L. Khan, Heidi M. Dierssen, Ted A. Scambos, Juan Höfer, and Raul R. Cordero
The Cryosphere, 15, 133–148, https://doi.org/10.5194/tc-15-133-2021, https://doi.org/10.5194/tc-15-133-2021, 2021
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We present radiative forcing (RF) estimates by snow algae in the Antarctic Peninsula (AP) region from multi-year measurements of solar radiation and ground-based hyperspectral characterization of red and green snow algae collected during a brief field expedition in austral summer 2018. Mean daily RF was double for green (~26 W m−2) vs. red (~13 W m−2) snow algae during the peak growing season, which is on par with midlatitude dust attributions capable of advancing snowmelt.
Jan Lüdke, Marcus Dengler, Stefan Sommer, David Clemens, Sören Thomsen, Gerd Krahmann, Andrew W. Dale, Eric P. Achterberg, and Martin Visbeck
Ocean Sci., 16, 1347–1366, https://doi.org/10.5194/os-16-1347-2020, https://doi.org/10.5194/os-16-1347-2020, 2020
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We analyse the intraseasonal variability of the alongshore circulation off Peru in early 2017, this circulation is very important for the supply of nutrients to the upwelling regime. The causes of this variability and its impact on the biogeochemistry are investigated. The poleward flow is strengthened during the observed time period, likely by a downwelling coastal trapped wave. The stronger current causes an increase in nitrate and reduces the deficit of fixed nitrogen relative to phosphorus.
Ruifang C. Xie, Frédéric A. C. Le Moigne, Insa Rapp, Jan Lüdke, Beat Gasser, Marcus Dengler, Volker Liebetrau, and Eric P. Achterberg
Biogeosciences, 17, 4919–4936, https://doi.org/10.5194/bg-17-4919-2020, https://doi.org/10.5194/bg-17-4919-2020, 2020
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Thorium-234 (234Th) is widely used to study carbon fluxes from the surface ocean to depth. But few studies stress the relevance of oceanic advection and diffusion on the downward 234Th fluxes in nearshore environments. Our study in offshore Peru showed strong temporal variations in both the importance of physical processes on 234Th flux estimates and the oceanic residence time of 234Th, whereas salinity-derived seawater 238U activities accounted for up to 40 % errors in 234Th flux estimates.
Lennart Thomas Bach, Allanah Joy Paul, Tim Boxhammer, Elisabeth von der Esch, Michelle Graco, Kai Georg Schulz, Eric Achterberg, Paulina Aguayo, Javier Arístegui, Patrizia Ayón, Isabel Baños, Avy Bernales, Anne Sophie Boegeholz, Francisco Chavez, Gabriela Chavez, Shao-Min Chen, Kristin Doering, Alba Filella, Martin Fischer, Patricia Grasse, Mathias Haunost, Jan Hennke, Nauzet Hernández-Hernández, Mark Hopwood, Maricarmen Igarza, Verena Kalter, Leila Kittu, Peter Kohnert, Jesus Ledesma, Christian Lieberum, Silke Lischka, Carolin Löscher, Andrea Ludwig, Ursula Mendoza, Jana Meyer, Judith Meyer, Fabrizio Minutolo, Joaquin Ortiz Cortes, Jonna Piiparinen, Claudia Sforna, Kristian Spilling, Sonia Sanchez, Carsten Spisla, Michael Sswat, Mabel Zavala Moreira, and Ulf Riebesell
Biogeosciences, 17, 4831–4852, https://doi.org/10.5194/bg-17-4831-2020, https://doi.org/10.5194/bg-17-4831-2020, 2020
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The eastern boundary upwelling system off Peru is among Earth's most productive ocean ecosystems, but the factors that control its functioning are poorly constrained. Here we used mesocosms, moored ~ 6 km offshore Peru, to investigate how processes in plankton communities drive key biogeochemical processes. We show that nutrient and light co-limitation keep productivity and export at a remarkably constant level while stoichiometry changes strongly with shifts in plankton community structure.
Cited articles
Ackley, S. F. and Sullivan, C. W.: Physical controls on the development and characteristics of Antarctic sea ice biological communities – a review and synthesis, Deep-Sea Res. Pt. I, 41, 1583–1604, https://doi.org/10.1016/0967-0637(94)90062-0, 1994.
Akers, P. D., Savarino, J., Caillon, N., Servettaz, A. P. M., Le Meur, E., Magand, O., Martins, J., Agosta, C., Crockford, P., Kobayashi, K., Hattori, S., Curran, M., van Ommen, T., Jong, L., and Roberts, J. L.: Sunlight-driven nitrate loss records Antarctic surface mass balance, Nat. Commun., 13, 4274, https://doi.org/10.1038/s41467-022-31855-7, 2022.
Alley, R. B., Cuffey, K. M., Evenson, E. B., Strasser, J. C., Lawson, D. E., and Larson, G. J.: How glaciers entrain and transport basal sediment: Physical constraints, Quaternary Sci. Rev., 16, 1017–1038, https://doi.org/10.1016/S0277-3791(97)00034-6, 1997.
Anderson, J. B., Domack, E. W., and Kurtz, D. D.: Observations of Sediment–laden Icebergs in Antarctic Waters: Implications to Glacial Erosion and Transport, J. Glaciol., 25, 387–396, https://doi.org/10.3189/S0022143000015240, 1980.
Bamber, J. L., Tedstone, A. J., King, M. D., Howat, I. M., Enderlin, E. M., van den Broeke, M. R., and Noel, B.: Land Ice Freshwater Budget of the Arctic and North Atlantic Oceans: 1. Data, Methods, and Results, J. Geophys. Res.-Oceans, 123, 1827–1837, https://doi.org/10.1002/2017JC013605, 2018.
Boyd, P. W., Arrigo, K. R., Strzepek, R., and Van Dijken, G. L.: Mapping phytoplankton iron utilization: Insights into Southern Ocean supply mechanisms, J. Geophys. Res.-Oceans, 117, C06009, https://doi.org/10.1029/2011JC007726, 2012.
Browning, T. J., Achterberg, E. P., Engel, A., and Mawji, E.: Manganese co-limitation of phytoplankton growth and major nutrient drawdown in the Southern Ocean, Nat. Commun., 12, 884, https://doi.org/10.1038/s41467-021-21122-6, 2021.
Campbell, J. A. and Yeats, P. A.: The distribution of manganese, iron, nickel, copper and cadmium in the waters of Baffin Bay and the Canadian Arctic Archipelago, Oceanol. Acta, 5, 161–168, https://doi.org/10.1007/s00128-002-0077-7, 1982.
Cook, J., Edwards, A., Takeuchi, N., and Irvine-Fynn, T.: Cryoconite: The dark biological secret of the cryosphere, Progress in Physical Geography: Earth and Environment, 40, 66–111, https://doi.org/10.1177/0309133315616574, 2015.
Craven, M., Allison, I., Fricker, H. A., and Warner, R.: Properties of a marine ice layer under the Amery Ice Shelf, East Antarctica, J. Glaciol., 55, 717–728, https://doi.org/10.3189/002214309789470941, 2009.
De Baar, H. J. W., De Jong, J. T. M., Bakker, D. C. E., Loscher, B. M., Veth, C., Bathmann, U., and Smetacek, V.: Importance of iron for plankton blooms and carbon dioxide drawdown in the Southern Ocean, Nature, 373, 412–415, https://doi.org/10.1038/373412a0, 1995.
Dowdeswell, J. A. and Dowdeswell, E. K.: Debris in Icebergs and Rates of Glaci-Marine Sedimentation: Observations from Spitsbergen and a Simple Model, J. Geol., 97, 221–231, https://doi.org/10.1086/629296, 1989.
Enderlin, E. M., Hamilton, G. S., Straneo, F., and Sutherland, D. A.: Iceberg meltwater fluxes dominate the freshwater budget in Greenland's iceberg-congested glacial fjords, Geophys. Res. Lett., 43, 287–294, https://doi.org/10.1002/2016GL070718, 2016.
Fischer, H., Wagenbach, D., and Kipfstuhl, J.: Sulfate and nitrate firn concentrations on the Greenland ice sheet: 1. Large-scale geographical deposition changes, J. Geophys. Res.-Atmos., 103, 21927–21934, https://doi.org/10.1029/98JD01885, 1998.
Fischer, H., Schüpbach, S., Gfeller, G., Bigler, M., Röthlisberger, R., Erhardt, T., Stocker, T. F., Mulvaney, R., and Wolff, E. W.: Millennial changes in North American wildfire and soil activity over the last glacial cycle, Nat. Geosci., 8, 723–727, https://doi.org/10.1038/ngeo2495, 2015.
Forsch, K. O., Hahn-Woernle, L., Sherrell, R. M., Roccanova, V. J., Bu, K., Burdige, D., Vernet, M., and Barbeau, K. A.: Seasonal dispersal of fjord meltwaters as an important source of iron and manganese to coastal Antarctic phytoplankton, Biogeosciences, 18, 6349–6375, https://doi.org/10.5194/bg-18-6349-2021, 2021.
Garcia, H. E., Weathers, K., Paver, C. R., Smolyar, I., Boyer, T. P., Locarnini, R. A., Zweng, M. M., Mishonov, A. V., Baranova, O. K., Seidov, D., and Reagan, J. R.: World Ocean Atlas 2018, Volume 4: Dissolved Inorganic Nutrients (phosphate, nitrate and nitrate+nitrite, silicate), A. Mishonov Technical Ed., NOAA Atlas NESDIS 84, 35 pp., https://www.ncei.noaa.gov/products/world-ocean-atlas (last acces: November 2024), 2018.
Gleitz, M., v.d. Loeff, M. R., Thomas, D. N., Dieckmann, G. S., and Millero, F. J.: Comparison of summer and winter inorganic carbon, oxygen and nutrient concentrations in Antarctic sea ice brine, Mar. Chem., 51, 81–91, https://doi.org/10.1016/0304-4203(95)00053-T, 1995.
Grotti, M., Soggia, F., Ianni, C., and Frache, R.: Trace metals distributions in coastal sea ice of Terra Nova Bay, Ross Sea, Antarctica, Antarct. Sci., 17, 289–300, https://doi.org/10.1017/S0954102005002695, 2005.
Günther, S. and Dieckmann, G. S.: Seasonal development of algal biomass in snow-covered fast ice and the underlying platelet layer in the Weddell Sea, Antarctica, Antarct. Sci., 11, 305–315, https://doi.org/10.1017/S0954102099000395, 1999.
Gutt, J., Starmans, A., and Dieckmann, G.: Impact of iceberg scouring on polar benthic habitats, Mar. Ecol. Prog. Ser., 137, 311–316, https://doi.org/10.3354/meps137311, 1996.
Halbach, L., Vihtakari, M., Duarte, P., Everett, A., Granskog, M. A., Hop, H., Kauko, H. M., Kristiansen, S., Myhre, P. I., Pavlov, A. K., Pramanik, A., Tatarek, A., Torsvik, T., Wiktor, J. M., Wold, A., Wulff, A., Steen, H., and Assmy, P.: Tidewater Glaciers and Bedrock Characteristics Control the Phytoplankton Growth Environment in a Fjord in the Arctic, Front. Mar. Sci., 31, https://doi.org/10.3389/fmars.2019.00254, 2019.
Hansen, H. P. and Koroleff, F.: Determination of nutrients, in: Methods of seawater analysis, edited by: Grasshoff, K., Kremling, K., and Ehrhardt, M., Wiley-VCH Verlag GmbH, 159–228, ISBN 9783527613984, 1999.
Hansson, M. E.: The Renland ice core. A Northern Hemisphere record of aerosol composition over 120 000 years, Tellus B, 46, 390–418, https://doi.org/10.1034/j.1600-0889.1994.t01-4-00005.x, 1994.
Hart, T. J.: Discovery Reports, Discovery Reports, VIII, 1–268, 1934.
Hawco, N. J., Tagliabue, A., and Twining, B. S.: Manganese Limitation of Phytoplankton Physiology and Productivity in the Southern Ocean, Global Biogeochem. Cy., 36, e2022GB007382, https://doi.org/10.1029/2022GB007382, 2022.
Hawkings, J. R., Wadham, J. L., Benning, L. G., Hendry, K. R., Tranter, M., Tedstone, A., Nienow, P., and Raiswell, R.: Ice sheets as a missing source of silica to the polar oceans, Nat. Commun., 8, 14198, https://doi.org/10.1038/ncomms14198, 2017.
Hawkings, J. R., Skidmore, M. L., Wadham, J. L., Priscu, J. C., Morton, P. L., Hatton, J. E., Gardner, C. B., Kohler, T. J., Stibal, M., Bagshaw, E. A., Steigmeyer, A., Barker, J., Dore, J. E., Lyons, W. B., Tranter, M., and Spencer, R. G. M.: Enhanced trace element mobilization by Earth's ice sheets, P. Natl. Acad. Sci. USA, 117, 31648–31659, https://doi.org/10.1073/pnas.2014378117, 2020.
Helly, J. J., Kaufmann, R. S., Stephenson Jr., G. R., and Vernet, M.: Cooling, dilution and mixing of ocean water by free-drifting icebergs in the Weddell Sea, Deep-Sea Res. Pt. II, 58, 1346–1363, https://doi.org/10.1016/j.dsr2.2010.11.010, 2011.
Henley, S. F., Cozzi, S., Fripiat, F., Lannuzel, D., Nomura, D., Thomas, D. N., Meiners, K. M., Vancoppenolle, M., Arrigo, K., Stefels, J., van Leeuwe, M., Moreau, S., Jones, E. M., Fransson, A., Chierici, M., and Delille, B.: Macronutrient biogeochemistry in Antarctic land-fast sea ice: Insights from a circumpolar data compilation, Mar. Chem., 257, 104324, https://doi.org/10.1016/j.marchem.2023.104324, 2023.
Herraiz-Borreguero, L., Lannuzel, D., van der Merwe, P., Treverrow, A., and Pedro, J. B.: Large flux of iron from the Amery Ice Shelf marine ice to Prydz Bay, East Antarctica, J. Geophys. Res.-Oceans, 121, 6009–6020, https://doi.org/10.1002/2016JC011687, 2016.
Höfer, J., González, H., Laudien, J., Schmidt, G., Häussermann, V., and Richter, C.: All you can eat: the functional response of the cold-water coral Desmophyllum dianthus feeding on krill and copepods, PeerJ, 6, e5872, https://doi.org/10.7717/peerj.5872, 2018.
Höfer, J., Giesecke, R., Hopwood, M. J., Carrera, V., Alarcón, E., and González, H. E.: The role of water column stability and wind mixing in the production/export dynamics of two bays in the Western Antarctic Peninsula, Prog. Oceanogr., 174, 105–116, https://doi.org/10.1016/j.pocean.2019.01.005, 2019.
Hopwood, M. J., Cantoni, C., Clarke, J. S., Cozzi, S., and Achterberg, E. P.: The heterogeneous nature of Fe delivery from melting icebergs, Geochem. Perspect. Lett., 3, 200–209, https://doi.org/10.7185/geochemlet.1723, 2017.
Hopwood, M. J., Carroll, D., Höfer, J., Achterberg, E. P., Meire, L., Le Moigne, F. A. C., Bach, L. T., Eich, C., Sutherland, D. A., and González, H. E.: Highly variable iron content modulates iceberg-ocean fertilisation and potential carbon export, Nat. Commun., 10, 5261, https://doi.org/10.1038/s41467-019-13231-0, 2019.
Hopwood, M. J., Carroll, D., Cozzi, S., Cantoni, C., and Körtzinger, A.: GLICE Freshwater biogeochemistry, EMODnet [data set], https://emodnet.ec.europa.eu/geonetwork/emodnet/api/records/ff3c625c-6a39-46ef-b329-222040f85917, 2023.
Huhn, O., Rhein, M., Kanzow, T., Schaffer, J., and Sültenfuß, J.: Submarine Meltwater From Nioghalvfjerdsbræ (79 North Glacier), Northeast Greenland, J. Geophys. Res.-Oceans, 126, e2021JC017224, https://doi.org/10.1029/2021JC017224, 2021.
IPCC: IPCC Special Report on the Ocean and Cryosphere in a Changing Climate, edited by: Pörtner, H.-O., Roberts, D. C., Masson-Delmotte, V., Zhai, P., Tignor, M., Poloczanska, E., Mintenbeck, K., Alegría, A., Nicolai, M., Okem, A., Petzold, J., Rama, B., and Weyer, N. M., Cambridge University Press, Cambridge, UK and New York, NY, USA, 755 pp. https://doi.org/10.1017/9781009157964, 2019.
Kandel, A. and Aguilar-Islas, A.: Spatial and temporal variability of dissolved aluminum and manganese in surface waters of the northern Gulf of Alaska, Deep-Sea Res. Pt. II, 189–190, 104952, https://doi.org/10.1016/j.dsr2.2021.104952, 2021.
Kim, J., Park, Y. K., Koo, T., Jung, J., Kang, I., Kim, K., Park, H., Yoo, K.-C., Rosenheim, B. E., and Conway, T. M.: Microbially-mediated reductive dissolution of Fe-bearing minerals during freeze-thaw cycles, Geochim. Cosmochim. Ac., 376, 134–143, https://doi.org/10.1016/j.gca.2024.05.015, 2024.
Kim, K., Choi, W., Hoffmann, M. R., Yoon, H.-I., and Park, B.-K.: Photoreductive Dissolution of Iron Oxides Trapped in Ice and Its Environmental Implications, Environ. Sci. Technol., 44, 4142–4148, https://doi.org/10.1021/es9037808, 2010.
Kjær, H. A., Dallmayr, R., Gabrieli, J., Goto-Azuma, K., Hirabayashi, M., Svensson, A., and Vallelonga, P.: Greenland ice cores constrain glacial atmospheric fluxes of phosphorus, J. Geophys. Res.-Atmos., 120, 10810–10822, https://doi.org/10.1002/2015JD023559, 2015.
Knight, P. G.: The basal ice layer of glaciers and ice sheets, Quaternary Sci. Rev., 16, 975–993, https://doi.org/10.1016/S0277-3791(97)00033-4, 1997.
Krause, J., Hopwood, M. J., Höfer, J., Krisch, S., Achterberg, E. P., Alarcón, E., Carroll, D., González, H. E., Juul-Pedersen, T., Liu, T., Lodeiro, P., Meire, L., and Rosing, M. T.: Trace Element (Fe, Co, Ni and Cu) Dynamics Across the Salinity Gradient in Arctic and Antarctic Glacier Fjords, Front. Earth Sci., 9, 878, https://doi.org/10.3389/feart.2021.725279, 2021.
Krause, J. W., Duarte, C. M., Marquez, I. A., Assmy, P., Fernández-Méndez, M., Wiedmann, I., Wassmann, P., Kristiansen, S., and Agustí, S.: Biogenic silica production and diatom dynamics in the Svalbard region during spring, Biogeosciences, 15, 6503–6517, https://doi.org/10.5194/bg-15-6503-2018, 2018.
Krause, J. W., Schulz, I. K., Rowe, K. A., Dobbins, W., Winding, M. H. S., Sejr, M. K., Duarte, C. M., and Agustí, S.: Silicic acid limitation drives bloom termination and potential carbon sequestration in an Arctic bloom, Sci. Rep.-UK, 9, 8149, https://doi.org/10.1038/s41598-019-44587-4, 2019.
Krisch, S., Browning, T. J., Graeve, M., Ludwichowski, K.-U., Lodeiro, P., Hopwood, M. J., Roig, S., Yong, J.-C., Kanzow, T., and Achterberg, E. P.: The influence of Arctic Fe and Atlantic fixed N on summertime primary production in Fram Strait, North Greenland Sea, Sci. Rep.-UK, 10, 15230, https://doi.org/10.1038/s41598-020-72100-9, 2020.
Latour, P., Wuttig, K., van der Merwe, P., Strzepek, R. F., Gault-Ringold, M., Townsend, A. T., Holmes, T. M., Corkill, M., and Bowie, A. R.: Manganese biogeochemistry in the Southern Ocean, from Tasmania to Antarctica, Limnol. Oceanogr., 66, 2547–2562, https://doi.org/10.1002/lno.11772, 2021.
Laufer-Meiser, K., Michaud, A. B., Maisch, M., Byrne, J. M., Kappler, A., Patterson, M. O., Røy, H., and Jørgensen, B. B.: Potentially bioavailable iron produced through benthic cycling in glaciated Arctic fjords of Svalbard, Nat. Commun., 12, 1349, https://doi.org/10.1038/s41467-021-21558-w, 2021.
Lewis, E. L. and Perkin, R. G.: Ice pumps and their rates, J. Geophys. Res.-Oceans, 91, 11756–11762, https://doi.org/10.1029/JC091iC10p11756, 1986.
Lin, H. and Twining, B. S.: Chemical speciation of iron in Antarctic waters surrounding free-drifting icebergs, Mar. Chem., 128, 81–91, https://doi.org/10.1016/j.marchem.2011.10.005, 2012.
Lin, H., Rauschenberg, S., Hexel, C. R., Shaw, T. J., and Twining, B. S.: Free-drifting icebergs as sources of iron to the Weddell Sea, Deep-Sea Res. Pt. II, 58, 1392–1406, https://doi.org/10.1016/j.dsr2.2010.11.020, 2011.
Lippiatt, S. M., Lohan, M. C., and Bruland, K. W.: The distribution of reactive iron in northern Gulf of Alaska coastal waters, Mar. Chem., 121, 187–199, https://doi.org/10.1016/j.marchem.2010.04.007, 2010.
Loscher, B. M., DeBaar, H. J. W., DeJong, J. T. M., Veth, C., and Dehairs, F.: The distribution of Fe in the Antarctic Circumpolar Current, Deep-Sea Res. Pt. II, 44, 143–187, https://doi.org/10.1016/S0967-0645(96)00101-4, 1997.
Martin, J. H., Fitzwater, S. E., and Gordon, R. M.: Iron deficiency limits phytoplankton growth in Antarctic waters, Global Biogeochem. Cy., 4, 5–12, https://doi.org/10.1029/GB004i001p00005, 1990a.
Martin, J. H., Gordon, R. M., and Fitzwater, S. E.: Iron in Antarctic waters, Nature, 345, 156–158, https://doi.org/10.1038/345156a0, 1990b.
Meire, L., Meire, P., Struyf, E., Krawczyk, D. W., Arendt, K. E., Yde, J. C., Juul Pedersen, T., Hopwood, M. J., Rysgaard, S., and Meysman, F. J. R.: High export of dissolved silica from the Greenland Ice Sheet, Geophys. Res. Lett., 43, 9173–9182, https://doi.org/10.1002/2016GL070191, 2016.
Meire, L., Mortensen, J., Meire, P., Juul-Pedersen, T., Sejr, M. K., Rysgaard, S., Nygaard, R., Huybrechts, P., and Meysman, F. J. R.: Marine-terminating glaciers sustain high productivity in Greenland fjords, Global Change Biol., 23, 5344–5357, https://doi.org/10.1111/gcb.13801, 2017.
Moon, T., Sutherland, D. A., Carroll, D., Felikson, D., Kehrl, L., and Straneo, F.: Subsurface iceberg melt key to Greenland fjord freshwater budget, Nat. Geosci., 11, 49–54, https://doi.org/10.1038/s41561-017-0018-z, 2018.
Moore, C. M., Mills, M. M., Arrigo, K. R., Berman-Frank, I., Bopp, L., Boyd, P. W., Galbraith, E. D., Geider, R. J., Guieu, C., Jaccard, S. L., Jickells, T. D., La Roche, J., Lenton, T. M., Mahowald, N. M., Maranon, E., Marinov, I., Moore, J. K., Nakatsuka, T., Oschlies, A., Saito, M. A., Thingstad, T. F., Tsuda, A., and Ulloa, O.: Processes and patterns of oceanic nutrient limitation, Nat. Geosci., 6, 701–710, https://doi.org/10.1038/ngeo1765, 2013.
Mugford, R. I. and Dowdeswell, J. A.: Modeling iceberg-rafted sedimentation in high-latitude fjord environments, J. Geophys. Res.-Earth, 115, F03024, https://doi.org/10.1029/2009JF001564, 2010.
Neubauer, J. and Heumann, K. G.: Nitrate trace determinations in snow and firn core samples of ice shelves at the weddell sea, Antarctica, Atmos. Environ., 22, 537–545, https://doi.org/10.1016/0004-6981(88)90197-7, 1988.
Nielsdottir, M. C., Moore, C. M., Sanders, R., Hinz, D. J., and Achterberg, E. P.: Iron limitation of the postbloom phytoplankton communities in the Iceland Basin, Global Biogeochem. Cy., 23, GB3001, https://doi.org/10.1029/2008gb003410, 2009.
Nomura, D., Sahashi, R., Takahashi, K. D., Makabe, R., Ito, M., Tozawa, M., Wongpan, P., Matsuda, R., Sano, M., Yamamoto-Kawai, M., Nojiro, N., Tachibana, A., Kurosawa, N., Moteki, M., Tamura, T., Aoki, S., and Murase, H.: Biogeochemical characteristics of brash sea ice and icebergs during summer and autumn in the Indian sector of the Southern Ocean, Prog. Oceanogr., 214, 103023, https://doi.org/10.1016/j.pocean.2023.103023, 2023.
Oerter, H., Kipfstuhl, J., Determann, J., Miller, H., Wagenbach, D., Minikin, A., and Graft, W.: Evidence for basal marine ice in the Filchner–Ronne ice shelf, Nature, 358, 399–401, https://doi.org/10.1038/358399a0, 1992.
Oksanen, J., Blanchet, F. G., Friendly, M., Kindt, R., Legendre, P., McGlinn, D., Minchin, P. R., O'Hara, R. B., Simpson, G. L., Solymos, P., H., Stevens, M. H. H., Szoecs, E., and Wagner, H.: vegan: Community Ecology Package version 2.5-7, https://github.com/vegandevs/vegan (last acces: November 2024), 2020.
Parker, B. C., Heiskell, L. E., Thompson, W., and Zeller, E. J.: Non-biogenic fixed nitrogen in Antarctica and some ecological implications, Nature, 271, 651–652, https://doi.org/10.1038/271651a0, 1978.
Peñuelas, J., Sardans, J., Rivas-ubach, A., and Janssens, I. A.: The human-induced imbalance between C, N and P in Earth's life system, Global Change Biol., 18, 3–6, https://doi.org/10.1111/j.1365-2486.2011.02568.x, 2012.
Person, R., Vancoppenolle, M., Aumont, O., and Malsang, M.: Continental and Sea Ice Iron Sources Fertilize the Southern Ocean in Synergy, Geophys. Res. Lett., 48, e2021GL094761, https://doi.org/10.1029/2021GL094761, 2021.
R Core Team: R: A Language and Environment for Statistical Computing, https://www.R-project.org/ (last acces: November 2024), 2023.
Raiswell, R.: Iceberg-hosted nanoparticulate Fe in the Southern Ocean: Mineralogy, origin, dissolution kinetics and source of bioavailable Fe, Deep-Sea Res. Pt. II, 58, 1364–1375, https://doi.org/10.1016/j.dsr2.2010.11.011, 2011.
Raiswell, R., Benning, L. G., Tranter, M., and Tulaczyk, S.: Bioavailable iron in the Southern Ocean: the significance of the iceberg conveyor belt, Geochem. T., 9, 7, https://doi.org/10.1186/1467-4866-9-7, 2008.
Randelhoff, A., Holding, J., Janout, M., Sejr, M. K., Babin, M., Tremblay, J. É., and Alkire, M. B.: Pan-Arctic Ocean Primary Production Constrained by Turbulent Nitrate Fluxes, Front. Mar. Sci., 7, https://doi.org/10.3389/fmars.2020.00150, 2020.
Redfield, A. C.: On the proportions of organic derivations in sea water and their relation to the composition of plankton, in: James Johnstone Memorial Volume, edited by: Daniel, R. J., University Press of Liverpool, Liverpool, 177–192, 1934.
Rignot, E., Jacobs, S., Mouginot, J., and Scheuchl, B.: Ice-Shelf Melting Around Antarctica, Science, 341, 266–270, https://doi.org/10.1126/science.1235798, 2013.
Rozwalak, P., Podkowa, P., Buda, J., Niedzielski, P., Kawecki, S., Ambrosini, R., Azzoni, R. S., Baccolo, G., Ceballos, J. L., Cook, J., Di Mauro, B., Ficetola, G. F., Franzetti, A., Ignatiuk, D., Klimaszyk, P., Łokas, E., Ono, M., Parnikoza, I., Pietryka, M., Pittino, F., Poniecka, E., Porazinska, D. L., Richter, D., Schmidt, S. K., Sommers, P., Souza-Kasprzyk, J., Stibal, M., Szczuciński, W., Uetake, J., Wejnerowski, Ł., Yde, J. C., Takeuchi, N., and Zawierucha, K.: Cryoconite – From minerals and organic matter to bioengineered sediments on glacier's surfaces, Sci. Total Environ., 807, 150874, https://doi.org/10.1016/j.scitotenv.2021.150874, 2022.
Rudnick, R. L. and Gao, S.: Composition of the continental crust, in: Treatise on geochemistry, vol. 3, The Crust, edited by: Holland, H. D. and Turekian, K. K., Elsevier, Amsterdam, 1–65, https://doi.org/10.1016/B0-08-043751-6/03016-4, 2003.
Ryan-Keogh, T. J., Macey, A. I., Nielsdottir, M. C., Lucas, M. I., Steigenberger, S. S., Stinchcombe, M. C., Achterberg, E. P., Bibby, T. S., and Moore, C. M.: Spatial and temporal development of phytoplankton iron stress in relation to bloom dynamics in the high-latitude North Atlantic Ocean, Limnol. Oceanogr., 58, 533–545, https://doi.org/10.4319/lo.2013.58.2.0533, 2013.
Schwarz, J. N. and Schodlok, M. P.: Impact of drifting icebergs on surface phytoplankton biomass in the Southern Ocean: Ocean colour remote sensing and in situ iceberg tracking, Deep-Sea Res. Pt. I, 56, 1727–1741, https://doi.org/10.1016/j.dsr.2009.05.003, 2009.
Sedwick, P. N., DiTullio, G. R., and Mackey, D. J.: Iron and manganese in the Ross Sea, Antarctica: Seasonal iron limitation in Antarctic shelf waters, J. Geophys. Res.-Oceans, 105, 11321–11336, https://doi.org/10.1029/2000jc000256, 2000.
Shaw, T. J., Raiswell, R., Hexel, C. R., Vu, H. P., Moore, W. S., Dudgeon, R., and Smith Jr., K. L.: Input, composition, and potential impact of terrigenous material from free-drifting icebergs in the Weddell Sea, Deep-Sea Res. Pt. II, 58, 1376–1383, https://doi.org/10.1016/j.dsr2.2010.11.012, 2011.
Shulenberger, E.: Water-column studies near a melting Arctic iceberg, Polar Biol., 2, 149–158, https://doi.org/10.1007/BF00448964, 1983.
Smith Jr., K. L., Robison, B. H., Helly, J. J., Kaufmann, R. S., Ruhl, H. A., Shaw, T. J., Twining, B. S., and Vernet, M.: Free-drifting icebergs: Hot spots of chemical and biological enrichment in the Weddell Sea, Science, 317, 478–482, https://doi.org/10.1126/science.1142834, 2007.
Smith, J. A., Graham, A. G. C., Post, A. L., Hillenbrand, C.-D., Bart, P. J., and Powell, R. D.: The marine geological imprint of Antarctic ice shelves, Nat. Commun., 10, 5635, https://doi.org/10.1038/s41467-019-13496-5, 2019.
Stephenson, G. R., Sprintall, J., Gille, S. T., Vernet, M., Helly, J. J., and Kaufmann, R. S.: Subsurface melting of a free-floating Antarctic iceberg, Deep-Sea Res. Pt. II, 58, 1336–1345, https://doi.org/10.1016/j.dsr2.2010.11.009, 2011.
Stibal, M., Box, J. E., Cameron, K. A., Langen, P. L., Yallop, M. L., Mottram, R. H., Khan, A. L., Molotch, N. P., Chrismas, N. A. M., Calì Quaglia, F., Remias, D., Smeets, C. J. P. P., van den Broeke, M. R., Ryan, J. C., Hubbard, A., Tranter, M., van As, D., and Ahlstrøm, A. P.: Algae Drive Enhanced Darkening of Bare Ice on the Greenland Ice Sheet, Geophys. Res. Lett., 44, 11463–11471, https://doi.org/10.1002/2017GL075958, 2017.
Sunda, W. G. and Huntsman, S. A.: Effect of sunlight on redox cycles of manganese in the southwestern Sargasso Sea, Deep-Sea Res., 35, 1297–1317, https://doi.org/10.1016/0198-0149(88)90084-2, 1988.
Sunda, W. G., Huntsman, S. A., and Harvey, G. R.: Photoreduction of manganese oxides in seawater and its geochemical and biological implications, Nature, 301, 234–236, https://doi.org/10.1038/301234a0, 1983.
Syvitski, J. P. M., Burrell, D. C., and Skei, J. M.: Fjords, Springer New York, https://doi.org/10.1007/978-1-4612-4632-9, 1987.
Tarling, G. A., Thorpe, S. E., Henley, S. F., Burson, A., Liszka, C. M., Manno, C., Lucas, N. S., Ward, F., Hendry, K. R., Malcolm S. Woodward, E., Wootton, M., and Povl Abrahamsen, E.: Collapse of a giant iceberg in a dynamic Southern Ocean marine ecosystem: In situ observations of A-68A at South Georgia, Prog. Oceanogr., 226, 103297, https://doi.org/10.1016/j.pocean.2024.103297, 2024.
Tournadre, J., Bouhier, N., Girard-Ardhuin, F., and Rémy, F.: Antarctic icebergs distributions 1992–2014, J. Geophys. Res.-Oceans, 121, 327–349, https://doi.org/10.1002/2015JC011178, 2016.
Tranter, M., Skidmore, M., and Wadham, J.: Hydrological controls on microbial communities in subglacial environments, Hydrol. Process., 19, 995–998, https://doi.org/10.1002/hyp.5854, 2005.
Trefault, N., De la Iglesia, R., Moreno-Pino, M., Lopes dos Santos, A., Gérikas Ribeiro, C., Parada-Pozo, G., Cristi, A., Marie, D., and Vaulot, D.: Annual phytoplankton dynamics in coastal waters from Fildes Bay, Western Antarctic Peninsula, Sci. Rep.-UK, 11, 1368, https://doi.org/10.1038/s41598-020-80568-8, 2021.
Vancoppenolle, M., Goosse, H., de Montety, A., Fichefet, T., Tremblay, B., and Tison, J.-L.: Modeling brine and nutrient dynamics in Antarctic sea ice: The case of dissolved silica, J. Geophys. Res.-Oceans, 115, C02005, https://doi.org/10.1029/2009JC005369, 2010.
van Genuchten, C. M., Hopwood, M. J., Liu, T., Krause, J., Achterberg, E. P., Rosing, M. T., and Meire, L.: Solid-phase Mn speciation in suspended particles along meltwater-influenced fjords of West Greenland, Geochim. Cosmochim. Ac., 326, 180–198, https://doi.org/10.1016/j.gca.2022.04.003, 2022.
Vernet, M., Sines, K., Chakos, D., Cefarelli, A. O., and Ekern, L.: Impacts on phytoplankton dynamics by free-drifting icebergs in the NW Weddell Sea, Deep-Sea Res. Pt. II, 58, 1422–1435, https://doi.org/10.1016/j.dsr2.2010.11.022, 2011.
Wadham, J. L., Tranter, M., Skidmore, M., Hodson, A. J., Priscu, J., Lyons, W. B., Sharp, M., Wynn, P., and Jackson, M.: Biogeochemical weathering under ice: Size matters, Global Biogeochem. Cy., 24, GB3025, https://doi.org/10.1029/2009gb003688, 2010.
Wehrmann, L. M., Formolo, M. J., Owens, J. D., Raiswell, R., Ferdelman, T. G., Riedinger, N., and Lyons, T. W.: Iron and manganese speciation and cycling in glacially influenced high-latitude fjord sediments (West Spitsbergen, Svalbard): Evidence for a benthic recycling-transport mechanism, Geochim. Cosmochim. Ac., 141, 628–655, https://doi.org/10.1016/j.gca.2014.06.007, 2013.
Woodworth-Lynas, C. M. T., Josenhans, H. W., Barrie, J. V, Lewis, C. F. M., and Parrott, D. R.: The physical processes of seabed disturbance during iceberg grounding and scouring, Cont. Shelf Res., 11, 939–961, https://doi.org/10.1016/0278-4343(91)90086-L, 1991.
Wu, M., McCain, J. S. P., Rowland, E., Middag, R., Sandgren, M., Allen, A. E., and Bertrand, E. M.: Manganese and iron deficiency in Southern Ocean Phaeocystis antarctica populations revealed through taxon-specific protein indicators, Nat. Commun., 10, 3582, https://doi.org/10.1038/s41467-019-11426-z, 2019.
Wu, S.-Y. and Hou, S.: Impact of icebergs on net primary productivity in the Southern Ocean, The Cryosphere, 11, 707–722, https://doi.org/10.5194/tc-11-707-2017, 2017.
Yang, Y., Ren, J., and Zhu, Z.: Distributions and Influencing Factors of Dissolved Manganese in Kongsfjorden and Ny-Ålesund, Svalbard, ACS Earth Space Chem, 6, 1259–1268, https://doi.org/10.1021/acsearthspacechem.1c00388, 2022.
Zhang, R., John, S. G., Zhang, J., Ren, J., Wu, Y., Zhu, Z., Liu, S., Zhu, X., Marsay, C. M., and Wenger, F.: Transport and reaction of iron and iron stable isotopes in glacial meltwaters on Svalbard near Kongsfjorden: From rivers to estuary to ocean, Earth Planet. Sc. Lett., 424, 201–211, https://doi.org/10.1016/j.epsl.2015.05.031, 2015.
Short summary
Here we analysed calved ice samples from both the Arctic and Antarctic to assess the variability in the composition of iceberg meltwater. Our results suggest that low concentrations of nitrate and phosphate in ice are primarily from the ice matrix, whereas sediment-rich layers impart a low concentration of silica and modest concentrations of iron and manganese. At a global scale, there are very limited differences in the nutrient composition of ice.
Here we analysed calved ice samples from both the Arctic and Antarctic to assess the variability...
