Articles | Volume 18, issue 8
https://doi.org/10.5194/cp-18-1797-2022
https://doi.org/10.5194/cp-18-1797-2022
Research article
 | 
09 Aug 2022
Research article |  | 09 Aug 2022

Bottom water oxygenation changes in the southwestern Indian Ocean as an indicator for enhanced respired carbon storage since the last glacial inception

Helen Eri Amsler, Lena Mareike Thöle, Ingrid Stimac, Walter Geibert, Minoru Ikehara, Gerhard Kuhn, Oliver Esper, and Samuel Laurent Jaccard

Related authors

Ice-proximal sea-ice reconstruction in Powell Basin, Antarctica since the Last Interglacial
Wee Wei Khoo, Juliane Müller, Oliver Esper, Wenshen Xiao, Christian Stepanek, Paul Gierz, Gerrit Lohmann, Walter Geibert, Jens Hefter, and Gesine Mollenhauer
EGUsphere, https://doi.org/10.5194/egusphere-2024-246,https://doi.org/10.5194/egusphere-2024-246, 2024
This preprint is open for discussion and under review for Climate of the Past (CP).
Short summary
An expanded database of Southern Hemisphere surface sediment dinoflagellate cyst assemblages and their oceanographic affinities
Lena Mareike Thöle, Peter Dirk Nooteboom, Suning Hou, Rujian Wang, Senyan Nie, Elisabeth Michel, Isabel Sauermilch, Fabienne Marret, Francesca Sangiorgi, and Peter Kristian Bijl
J. Micropalaeontol., 42, 35–56, https://doi.org/10.5194/jm-42-35-2023,https://doi.org/10.5194/jm-42-35-2023, 2023
Short summary
Deglacial and Holocene sea-ice and climate dynamics in the Bransfield Strait, northern Antarctic Peninsula
Maria-Elena Vorrath, Juliane Müller, Paola Cárdenas, Thomas Opel, Sebastian Mieruch, Oliver Esper, Lester Lembke-Jene, Johan Etourneau, Andrea Vieth-Hillebrand, Niko Lahajnar, Carina B. Lange, Amy Leventer, Dimitris Evangelinos, Carlota Escutia, and Gesine Mollenhauer
Clim. Past, 19, 1061–1079, https://doi.org/10.5194/cp-19-1061-2023,https://doi.org/10.5194/cp-19-1061-2023, 2023
Short summary
Compilation of Southern Ocean sea-ice records covering the last glacial-interglacial cycle (12–130 ka)
Matthew Chadwick, Xavier Crosta, Oliver Esper, Lena Thöle, and Karen E. Kohfeld
Clim. Past, 18, 1815–1829, https://doi.org/10.5194/cp-18-1815-2022,https://doi.org/10.5194/cp-18-1815-2022, 2022
Short summary
Antarctic sea ice over the past 130 000 years – Part 1: a review of what proxy records tell us
Xavier Crosta, Karen E. Kohfeld, Helen C. Bostock, Matthew Chadwick, Alice Du Vivier, Oliver Esper, Johan Etourneau, Jacob Jones, Amy Leventer, Juliane Müller, Rachael H. Rhodes, Claire S. Allen, Pooja Ghadi, Nele Lamping, Carina B. Lange, Kelly-Anne Lawler, David Lund, Alice Marzocchi, Katrin J. Meissner, Laurie Menviel, Abhilash Nair, Molly Patterson, Jennifer Pike, Joseph G. Prebble, Christina Riesselman, Henrik Sadatzki, Louise C. Sime, Sunil K. Shukla, Lena Thöle, Maria-Elena Vorrath, Wenshen Xiao, and Jiao Yang
Clim. Past, 18, 1729–1756, https://doi.org/10.5194/cp-18-1729-2022,https://doi.org/10.5194/cp-18-1729-2022, 2022
Short summary

Related subject area

Subject: Ocean Dynamics | Archive: Marine Archives | Timescale: Pleistocene
Changes in the Red Sea overturning circulation during Marine Isotope Stage 3
Raphaël Hubert-Huard, Nils Andersen, Helge W. Arz, Werner Ehrmann, and Gerhard Schmiedl
Clim. Past, 20, 267–280, https://doi.org/10.5194/cp-20-267-2024,https://doi.org/10.5194/cp-20-267-2024, 2024
Short summary
Sea-level and monsoonal control on the Maldives carbonate platform (Indian Ocean) over the last 1.3 million years
Montserrat Alonso-Garcia, Jesus Reolid, Francisco J. Jimenez-Espejo, Or M. Bialik, Carlos A. Alvarez Zarikian, Juan C. Laya, Igor Carrasquiera, Luigi Jovane, John J. G. Reijmer, Christian Betzler, and Gregor P. Eberli
Clim. Past Discuss., https://doi.org/10.5194/cp-2023-68,https://doi.org/10.5194/cp-2023-68, 2023
Revised manuscript accepted for CP
Short summary
An Intertropical Convergence Zone shift controlled the terrestrial material supply on the Ninetyeast Ridge
Xudong Xu, Jianguo Liu, Yun Huang, Lanlan Zhang, Liang Yi, Shengfa Liu, Yiping Yang, Li Cao, and Long Tan
Clim. Past, 18, 1369–1384, https://doi.org/10.5194/cp-18-1369-2022,https://doi.org/10.5194/cp-18-1369-2022, 2022
Short summary
Sea ice changes in the southwest Pacific sector of the Southern Ocean during the last 140 000 years
Jacob Jones, Karen E. Kohfeld, Helen Bostock, Xavier Crosta, Melanie Liston, Gavin Dunbar, Zanna Chase, Amy Leventer, Harris Anderson, and Geraldine Jacobsen
Clim. Past, 18, 465–483, https://doi.org/10.5194/cp-18-465-2022,https://doi.org/10.5194/cp-18-465-2022, 2022
Short summary
Summer sea-ice variability on the Antarctic margin during the last glacial period reconstructed from snow petrel (Pagodroma nivea) stomach-oil deposits
Erin L. McClymont, Michael J. Bentley, Dominic A. Hodgson, Charlotte L. Spencer-Jones, Thomas Wardley, Martin D. West, Ian W. Croudace, Sonja Berg, Darren R. Gröcke, Gerhard Kuhn, Stewart S. R. Jamieson, Louise Sime, and Richard A. Phillips
Clim. Past, 18, 381–403, https://doi.org/10.5194/cp-18-381-2022,https://doi.org/10.5194/cp-18-381-2022, 2022
Short summary

Cited articles

Adkins, J. F.: The role of deep ocean circulation in setting glacial climates, Paleoceanography, 28, 539–561, https://doi.org/10.1002/palo.20046, 2013. 
Adkins, J. F., McIntyre, K., and Schrag, D. P.: The salinity, temperature, and δ18O of the glacial deep ocean, Science, 298, 69–73, https://doi.org/10.1126/science.1076252, 2002. 
Ai, X. E., Studer, A. S., Sigman, D. M., Martínez-García, A., Fripiat, F., Thöle, L. M., Michel, E., Gottschalk, J., Arnold, L., Moretti, S., Schmitt, M., Oleynik, S., Jaccard, S. L., and Haug, G. H.: Southern Ocean upwelling, Earth's obliquity, and glacial-interglacial atmospheric CO2 change, Science, 370, 1348–1352, https://doi.org/10.1126/science.abd2115, 2020. 
Amsler, H. E.: Paleoceanographic dynamics of the Southern Indian Ocean reconstructed from geochemical and sedimentological proxies across the last glacial cycle, BORIS [data set], https://doi.org/10.48620/69, 2022. 
Anderson, R. F. and Fleer, A. P.: Determination of Natural Actinides and Plutonium in Marine Particulate Material, Anal. Chem. 54, 1142–1147, https://doi.org/10.1021/ac00244a030, 1982. 
Download
Short summary
We present sedimentary redox-sensitive trace metal records from five sediment cores retrieved from the SW Indian Ocean. These records are indicative of oxygen-depleted conditions during cold periods and enhanced oxygenation during interstadials. Our results thus suggest that deep-ocean oxygenation changes were mainly controlled by ocean ventilation and that a generally more sluggish circulation contributed to sequestering remineralized carbon away from the atmosphere during glacial periods.