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 |
---|---|
Main Authors: | , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , |
Format: | Article in Journal/Newspaper |
Language: | English |
Published: |
Nature Research
2022
|
Subjects: | |
Online Access: | http://nora.nerc.ac.uk/id/eprint/529599/ https://nora.nerc.ac.uk/id/eprint/529599/1/s41467-022-29642-5.pdf https://www.nature.com/articles/s41467-022-29642-5 |
id |
ftnerc:oai:nora.nerc.ac.uk:529599 |
---|---|
record_format |
openpolar |
spelling |
ftnerc:oai:nora.nerc.ac.uk:529599 2023-05-15T13:41:45+02:00 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 Peck, Victoria L. Armbrecht, Linda Cage, Alix Cardillo, Fabricio G. Du, Zhiheng Fauth, Gerson Fogwill, Christopher J. Garcia, Marge 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 http://nora.nerc.ac.uk/id/eprint/529599/ https://nora.nerc.ac.uk/id/eprint/529599/1/s41467-022-29642-5.pdf https://www.nature.com/articles/s41467-022-29642-5 en eng Nature Research https://nora.nerc.ac.uk/id/eprint/529599/1/s41467-022-29642-5.pdf 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; Peck, Victoria L. orcid:0000-0002-7948-6853 Armbrecht, Linda; Cage, Alix; Cardillo, Fabricio G.; Du, Zhiheng; Fauth, Gerson; Fogwill, Christopher J.; Garcia, Marge; 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 Antiphased dust deposition and productivity in the Antarctic Zone over 1.5 million years. Nature Communications, 13, 2044. https://doi.org/10.1038/s41467-022-29642-5 <https://doi.org/10.1038/s41467-022-29642-5> cc_by_4 CC-BY Publication - Article PeerReviewed 2022 ftnerc https://doi.org/10.1038/s41467-022-29642-5 2023-02-04T19:51:42Z 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 Natural Environment Research Council: NERC Open Research Archive Antarctic Southern Ocean The Antarctic Patagonia Weddell Nature Communications 13 1 |
institution |
Open Polar |
collection |
Natural Environment Research Council: NERC Open Research Archive |
op_collection_id |
ftnerc |
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 Peck, Victoria L. Armbrecht, Linda Cage, Alix Cardillo, Fabricio G. Du, Zhiheng Fauth, Gerson Fogwill, Christopher J. Garcia, Marge 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 Peck, Victoria L. Armbrecht, Linda Cage, Alix Cardillo, Fabricio G. Du, Zhiheng Fauth, Gerson Fogwill, Christopher J. Garcia, Marge 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 Peck, Victoria L. Armbrecht, Linda Cage, Alix Cardillo, Fabricio G. Du, Zhiheng Fauth, Gerson Fogwill, Christopher J. Garcia, Marge 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 |
http://nora.nerc.ac.uk/id/eprint/529599/ https://nora.nerc.ac.uk/id/eprint/529599/1/s41467-022-29642-5.pdf https://www.nature.com/articles/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://nora.nerc.ac.uk/id/eprint/529599/1/s41467-022-29642-5.pdf 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; Peck, Victoria L. orcid:0000-0002-7948-6853 Armbrecht, Linda; Cage, Alix; Cardillo, Fabricio G.; Du, Zhiheng; Fauth, Gerson; Fogwill, Christopher J.; Garcia, Marge; 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 Antiphased dust deposition and productivity in the Antarctic Zone over 1.5 million years. Nature Communications, 13, 2044. https://doi.org/10.1038/s41467-022-29642-5 <https://doi.org/10.1038/s41467-022-29642-5> |
op_rights |
cc_by_4 |
op_rightsnorm |
CC-BY |
op_doi |
https://doi.org/10.1038/s41467-022-29642-5 |
container_title |
Nature Communications |
container_volume |
13 |
container_issue |
1 |
_version_ |
1766157267401441280 |