Millennial Variability in Intermediate Ocean Circulation and Indian Monsoonal Weathering Inputs During the Last Deglaciation and Holocene
The relationship between ocean circulation and monsoon systems over orbital to sub-millennial timescales is a crucial but poorly constrained component of the climate system. Here, using foraminiferal and detrital neodymium (Nd) isotope records from the intermediate-depth northern Indian Ocean, we pr...
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ftchinacasciocas:oai:ir.qdio.ac.cn:337002/180218 2023-05-15T13:50:10+02:00 Millennial Variability in Intermediate Ocean Circulation and Indian Monsoonal Weathering Inputs During the Last Deglaciation and Holocene Yu, Zhaojie Colin, Christophe Wilson, David J. Bayon, Germain Song, Zehua Sepulcre, Sophie Dapoigny, Arnaud Li, Yuanlong Wan, Shiming 2022-11-16 http://ir.qdio.ac.cn/handle/337002/180218 https://doi.org/10.1029/2022GL100003 英语 eng AMER GEOPHYSICAL UNION GEOPHYSICAL RESEARCH LETTERS http://ir.qdio.ac.cn/handle/337002/180218 doi:10.1029/2022GL100003 neodymium (Nd) isotope Indian Summer Monsoon Antarctic Intermediate Water Geology Geosciences Multidisciplinary NEODYMIUM ISOTOPE COMPOSITION SUMMER-MONSOON SOUTHERN-OCEAN EROSION RATES ND-ISOTOPE DEEP-OCEAN CLIMATE ATLANTIC CARBON ICE 期刊论文 2022 ftchinacasciocas https://doi.org/10.1029/2022GL100003 2023-01-16T16:14:20Z The relationship between ocean circulation and monsoon systems over orbital to sub-millennial timescales is a crucial but poorly constrained component of the climate system. Here, using foraminiferal and detrital neodymium (Nd) isotope records from the intermediate-depth northern Indian Ocean, we provide new evidence revealing that both monsoon-driven weathering inputs and water mass advection from the Southern Ocean influenced past seawater Nd isotope changes in this region. Our results suggest that Indian Summer Monsoon weakening coincided with enhanced northward Antarctic Intermediate Water (AAIW) advection during the last deglaciation, reflecting a strong interhemispheric coupling. In contrast, the Early Holocene was characterized by enhanced monsoon strength but persistently strong AAIW inflow, indicating a relationship in the opposite sense. These differing interhemispheric relationships indicate asynchronous changes in the global atmosphere-ocean-climate system, and may represent a previously unrecognized component of the ocean-atmosphere reorganization during the deglacial to Holocene transition. Report Antarc* Antarctic Southern Ocean Institute of Oceanology, Chinese Academy of Sciences: IOCAS-IR Antarctic Indian Southern Ocean Geophysical Research Letters 49 21 |
institution |
Open Polar |
collection |
Institute of Oceanology, Chinese Academy of Sciences: IOCAS-IR |
op_collection_id |
ftchinacasciocas |
language |
English |
topic |
neodymium (Nd) isotope Indian Summer Monsoon Antarctic Intermediate Water Geology Geosciences Multidisciplinary NEODYMIUM ISOTOPE COMPOSITION SUMMER-MONSOON SOUTHERN-OCEAN EROSION RATES ND-ISOTOPE DEEP-OCEAN CLIMATE ATLANTIC CARBON ICE |
spellingShingle |
neodymium (Nd) isotope Indian Summer Monsoon Antarctic Intermediate Water Geology Geosciences Multidisciplinary NEODYMIUM ISOTOPE COMPOSITION SUMMER-MONSOON SOUTHERN-OCEAN EROSION RATES ND-ISOTOPE DEEP-OCEAN CLIMATE ATLANTIC CARBON ICE Yu, Zhaojie Colin, Christophe Wilson, David J. Bayon, Germain Song, Zehua Sepulcre, Sophie Dapoigny, Arnaud Li, Yuanlong Wan, Shiming Millennial Variability in Intermediate Ocean Circulation and Indian Monsoonal Weathering Inputs During the Last Deglaciation and Holocene |
topic_facet |
neodymium (Nd) isotope Indian Summer Monsoon Antarctic Intermediate Water Geology Geosciences Multidisciplinary NEODYMIUM ISOTOPE COMPOSITION SUMMER-MONSOON SOUTHERN-OCEAN EROSION RATES ND-ISOTOPE DEEP-OCEAN CLIMATE ATLANTIC CARBON ICE |
description |
The relationship between ocean circulation and monsoon systems over orbital to sub-millennial timescales is a crucial but poorly constrained component of the climate system. Here, using foraminiferal and detrital neodymium (Nd) isotope records from the intermediate-depth northern Indian Ocean, we provide new evidence revealing that both monsoon-driven weathering inputs and water mass advection from the Southern Ocean influenced past seawater Nd isotope changes in this region. Our results suggest that Indian Summer Monsoon weakening coincided with enhanced northward Antarctic Intermediate Water (AAIW) advection during the last deglaciation, reflecting a strong interhemispheric coupling. In contrast, the Early Holocene was characterized by enhanced monsoon strength but persistently strong AAIW inflow, indicating a relationship in the opposite sense. These differing interhemispheric relationships indicate asynchronous changes in the global atmosphere-ocean-climate system, and may represent a previously unrecognized component of the ocean-atmosphere reorganization during the deglacial to Holocene transition. |
format |
Report |
author |
Yu, Zhaojie Colin, Christophe Wilson, David J. Bayon, Germain Song, Zehua Sepulcre, Sophie Dapoigny, Arnaud Li, Yuanlong Wan, Shiming |
author_facet |
Yu, Zhaojie Colin, Christophe Wilson, David J. Bayon, Germain Song, Zehua Sepulcre, Sophie Dapoigny, Arnaud Li, Yuanlong Wan, Shiming |
author_sort |
Yu, Zhaojie |
title |
Millennial Variability in Intermediate Ocean Circulation and Indian Monsoonal Weathering Inputs During the Last Deglaciation and Holocene |
title_short |
Millennial Variability in Intermediate Ocean Circulation and Indian Monsoonal Weathering Inputs During the Last Deglaciation and Holocene |
title_full |
Millennial Variability in Intermediate Ocean Circulation and Indian Monsoonal Weathering Inputs During the Last Deglaciation and Holocene |
title_fullStr |
Millennial Variability in Intermediate Ocean Circulation and Indian Monsoonal Weathering Inputs During the Last Deglaciation and Holocene |
title_full_unstemmed |
Millennial Variability in Intermediate Ocean Circulation and Indian Monsoonal Weathering Inputs During the Last Deglaciation and Holocene |
title_sort |
millennial variability in intermediate ocean circulation and indian monsoonal weathering inputs during the last deglaciation and holocene |
publisher |
AMER GEOPHYSICAL UNION |
publishDate |
2022 |
url |
http://ir.qdio.ac.cn/handle/337002/180218 https://doi.org/10.1029/2022GL100003 |
geographic |
Antarctic Indian Southern Ocean |
geographic_facet |
Antarctic Indian Southern Ocean |
genre |
Antarc* Antarctic Southern Ocean |
genre_facet |
Antarc* Antarctic Southern Ocean |
op_relation |
GEOPHYSICAL RESEARCH LETTERS http://ir.qdio.ac.cn/handle/337002/180218 doi:10.1029/2022GL100003 |
op_doi |
https://doi.org/10.1029/2022GL100003 |
container_title |
Geophysical Research Letters |
container_volume |
49 |
container_issue |
21 |
_version_ |
1766253141527887872 |