Antiphased dust deposition and productivity in the Antarctic Zone over 1.5 million years
The Southern Ocean paleoceanography provides key insights into how iron fertilization and oceanic productivity developed through Pleistocene ice-ages and their role in influencing the carbon cycle. We report a high-resolution record of dust deposition and ocean productivity for the Antarctic Zone, c...
Published in: | Nature Communications |
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Nature Research
2022
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ftoceanrep:oai:oceanrep.geomar.de:55915 2024-02-11T09:58:48+01:00 Antiphased dust deposition and productivity in the Antarctic Zone over 1.5 million years Weber, Michael E. Bailey, Ian Hemming, Sidney R. Martos, Yasmina M. Reilly, Brendan T. Ronge, Thomas A. Brachfeld, Stefanie Williams, Trevor Raymo, Maureen Belt, Simon T. Smik, Lukas Vogel, Hendrik Peck, Victoria L. Armbrecht, Linda Cage, Alix Cardillo, Fabricio G. Du, Zhiheng Fauth, Gerson Fogwill, Christopher J. Garcia, Marga Garnsworthy, Marlo Glüder, Anna Guitard, Michelle Gutjahr, Marcus Hernández-Almeida, Iván Hoem, Frida S. Hwang, Ji-Hwan Iizuka, Mutsumi Kato, Yuji Kenlee, Bridget OConnell, Suzanne Pérez, Lara F. Seki, Osamu Stevens, Lee Tauxe, Lisa Tripathi, Shubham Warnock, Jonathan Zheng, Xufeng 2022-04-19 text https://oceanrep.geomar.de/id/eprint/55915/ https://oceanrep.geomar.de/id/eprint/55915/1/s41467-022-29642-5.pdf https://oceanrep.geomar.de/id/eprint/55915/2/41467_2022_29642_MOESM1_ESM.pdf https://doi.org/10.1038/s41467-022-29642-5 en eng Nature Research https://oceanrep.geomar.de/id/eprint/55915/1/s41467-022-29642-5.pdf https://oceanrep.geomar.de/id/eprint/55915/2/41467_2022_29642_MOESM1_ESM.pdf Weber, M. E., Bailey, I., Hemming, S. R., Martos, Y. M., Reilly, B. T., Ronge, T. A., Brachfeld, S., Williams, T., Raymo, M., Belt, S. T., Smik, L., Vogel, H., Peck, V. L., Armbrecht, L., Cage, A., Cardillo, F. G., Du, Z., Fauth, G., Fogwill, C. J., Garcia, M., Garnsworthy, M., Glüder, A., Guitard, M., Gutjahr, M. , Hernández-Almeida, I., Hoem, F. S., Hwang, J. H., Iizuka, M., Kato, Y., Kenlee, B., OConnell, S., Pérez, L. F., Seki, O., Stevens, L., Tauxe, L., Tripathi, S., Warnock, J. and Zheng, X. (2022) Antiphased dust deposition and productivity in the Antarctic Zone over 1.5 million years. Open Access Nature Communications, 13 . Art.Nr. 2044 (2022). DOI 10.1038/s41467-022-29642-5 <https://doi.org/10.1038/s41467-022-29642-5>. doi:10.1038/s41467-022-29642-5 cc_by_4.0 info:eu-repo/semantics/openAccess Article PeerReviewed info:eu-repo/semantics/article 2022 ftoceanrep https://doi.org/10.1038/s41467-022-29642-5 2024-01-15T00:25:24Z The Southern Ocean paleoceanography provides key insights into how iron fertilization and oceanic productivity developed through Pleistocene ice-ages and their role in influencing the carbon cycle. We report a high-resolution record of dust deposition and ocean productivity for the Antarctic Zone, close to the main dust source, Patagonia. Our deep-ocean records cover the last 1.5 Ma, thus doubling that from Antarctic ice-cores. We find a 5 to 15-fold increase in dust deposition during glacials and a 2 to 5-fold increase in biogenic silica deposition, reflecting higher ocean productivity during interglacials. This antiphasing persisted throughout the last 25 glacial cycles. Dust deposition became more pronounced across the Mid-Pleistocene Transition (MPT) in the Southern Hemisphere, with an abrupt shift suggesting more severe glaciations since ~0.9 Ma. Productivity was intermediate pre-MPT, lowest during the MPT and highest since 0.4 Ma. Generally, glacials experienced extended sea-ice cover, reduced bottom-water export and Weddell Gyre dynamics, which helped lower atmospheric CO2 levels. Article in Journal/Newspaper Antarc* Antarctic Sea ice Southern Ocean OceanRep (GEOMAR Helmholtz Centre für Ocean Research Kiel) Antarctic Southern Ocean The Antarctic Patagonia Weddell Nature Communications 13 1 |
institution |
Open Polar |
collection |
OceanRep (GEOMAR Helmholtz Centre für Ocean Research Kiel) |
op_collection_id |
ftoceanrep |
language |
English |
description |
The Southern Ocean paleoceanography provides key insights into how iron fertilization and oceanic productivity developed through Pleistocene ice-ages and their role in influencing the carbon cycle. We report a high-resolution record of dust deposition and ocean productivity for the Antarctic Zone, close to the main dust source, Patagonia. Our deep-ocean records cover the last 1.5 Ma, thus doubling that from Antarctic ice-cores. We find a 5 to 15-fold increase in dust deposition during glacials and a 2 to 5-fold increase in biogenic silica deposition, reflecting higher ocean productivity during interglacials. This antiphasing persisted throughout the last 25 glacial cycles. Dust deposition became more pronounced across the Mid-Pleistocene Transition (MPT) in the Southern Hemisphere, with an abrupt shift suggesting more severe glaciations since ~0.9 Ma. Productivity was intermediate pre-MPT, lowest during the MPT and highest since 0.4 Ma. Generally, glacials experienced extended sea-ice cover, reduced bottom-water export and Weddell Gyre dynamics, which helped lower atmospheric CO2 levels. |
format |
Article in Journal/Newspaper |
author |
Weber, Michael E. Bailey, Ian Hemming, Sidney R. Martos, Yasmina M. Reilly, Brendan T. Ronge, Thomas A. Brachfeld, Stefanie Williams, Trevor Raymo, Maureen Belt, Simon T. Smik, Lukas Vogel, Hendrik Peck, Victoria L. Armbrecht, Linda Cage, Alix Cardillo, Fabricio G. Du, Zhiheng Fauth, Gerson Fogwill, Christopher J. Garcia, Marga Garnsworthy, Marlo Glüder, Anna Guitard, Michelle Gutjahr, Marcus Hernández-Almeida, Iván Hoem, Frida S. Hwang, Ji-Hwan Iizuka, Mutsumi Kato, Yuji Kenlee, Bridget OConnell, Suzanne Pérez, Lara F. Seki, Osamu Stevens, Lee Tauxe, Lisa Tripathi, Shubham Warnock, Jonathan Zheng, Xufeng |
spellingShingle |
Weber, Michael E. Bailey, Ian Hemming, Sidney R. Martos, Yasmina M. Reilly, Brendan T. Ronge, Thomas A. Brachfeld, Stefanie Williams, Trevor Raymo, Maureen Belt, Simon T. Smik, Lukas Vogel, Hendrik Peck, Victoria L. Armbrecht, Linda Cage, Alix Cardillo, Fabricio G. Du, Zhiheng Fauth, Gerson Fogwill, Christopher J. Garcia, Marga Garnsworthy, Marlo Glüder, Anna Guitard, Michelle Gutjahr, Marcus Hernández-Almeida, Iván Hoem, Frida S. Hwang, Ji-Hwan Iizuka, Mutsumi Kato, Yuji Kenlee, Bridget OConnell, Suzanne Pérez, Lara F. Seki, Osamu Stevens, Lee Tauxe, Lisa Tripathi, Shubham Warnock, Jonathan Zheng, Xufeng Antiphased dust deposition and productivity in the Antarctic Zone over 1.5 million years |
author_facet |
Weber, Michael E. Bailey, Ian Hemming, Sidney R. Martos, Yasmina M. Reilly, Brendan T. Ronge, Thomas A. Brachfeld, Stefanie Williams, Trevor Raymo, Maureen Belt, Simon T. Smik, Lukas Vogel, Hendrik Peck, Victoria L. Armbrecht, Linda Cage, Alix Cardillo, Fabricio G. Du, Zhiheng Fauth, Gerson Fogwill, Christopher J. Garcia, Marga Garnsworthy, Marlo Glüder, Anna Guitard, Michelle Gutjahr, Marcus Hernández-Almeida, Iván Hoem, Frida S. Hwang, Ji-Hwan Iizuka, Mutsumi Kato, Yuji Kenlee, Bridget OConnell, Suzanne Pérez, Lara F. Seki, Osamu Stevens, Lee Tauxe, Lisa Tripathi, Shubham Warnock, Jonathan Zheng, Xufeng |
author_sort |
Weber, Michael E. |
title |
Antiphased dust deposition and productivity in the Antarctic Zone over 1.5 million years |
title_short |
Antiphased dust deposition and productivity in the Antarctic Zone over 1.5 million years |
title_full |
Antiphased dust deposition and productivity in the Antarctic Zone over 1.5 million years |
title_fullStr |
Antiphased dust deposition and productivity in the Antarctic Zone over 1.5 million years |
title_full_unstemmed |
Antiphased dust deposition and productivity in the Antarctic Zone over 1.5 million years |
title_sort |
antiphased dust deposition and productivity in the antarctic zone over 1.5 million years |
publisher |
Nature Research |
publishDate |
2022 |
url |
https://oceanrep.geomar.de/id/eprint/55915/ https://oceanrep.geomar.de/id/eprint/55915/1/s41467-022-29642-5.pdf https://oceanrep.geomar.de/id/eprint/55915/2/41467_2022_29642_MOESM1_ESM.pdf https://doi.org/10.1038/s41467-022-29642-5 |
geographic |
Antarctic Southern Ocean The Antarctic Patagonia Weddell |
geographic_facet |
Antarctic Southern Ocean The Antarctic Patagonia Weddell |
genre |
Antarc* Antarctic Sea ice Southern Ocean |
genre_facet |
Antarc* Antarctic Sea ice Southern Ocean |
op_relation |
https://oceanrep.geomar.de/id/eprint/55915/1/s41467-022-29642-5.pdf https://oceanrep.geomar.de/id/eprint/55915/2/41467_2022_29642_MOESM1_ESM.pdf Weber, M. E., Bailey, I., Hemming, S. R., Martos, Y. M., Reilly, B. T., Ronge, T. A., Brachfeld, S., Williams, T., Raymo, M., Belt, S. T., Smik, L., Vogel, H., Peck, V. L., Armbrecht, L., Cage, A., Cardillo, F. G., Du, Z., Fauth, G., Fogwill, C. J., Garcia, M., Garnsworthy, M., Glüder, A., Guitard, M., Gutjahr, M. , Hernández-Almeida, I., Hoem, F. S., Hwang, J. H., Iizuka, M., Kato, Y., Kenlee, B., OConnell, S., Pérez, L. F., Seki, O., Stevens, L., Tauxe, L., Tripathi, S., Warnock, J. and Zheng, X. (2022) Antiphased dust deposition and productivity in the Antarctic Zone over 1.5 million years. Open Access Nature Communications, 13 . Art.Nr. 2044 (2022). DOI 10.1038/s41467-022-29642-5 <https://doi.org/10.1038/s41467-022-29642-5>. doi:10.1038/s41467-022-29642-5 |
op_rights |
cc_by_4.0 info:eu-repo/semantics/openAccess |
op_doi |
https://doi.org/10.1038/s41467-022-29642-5 |
container_title |
Nature Communications |
container_volume |
13 |
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1 |
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1790594570379067392 |