Delayed Collapse of the North Pacific Intermediate Water After the Glacial Termination
Carbon release from the North Pacific in glacial-interglacial cycles has been mainly linked to the North Pacific Intermediate Water (NPIW) formation and associated carbon/nutrient water upwelling and biological productivity changes. However, relationship between NPIW and atmospheric CO2 change in th...
Published in: | Geophysical Research Letters |
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Language: | English |
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AMER GEOPHYSICAL UNION
2021
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Online Access: | http://ir.qdio.ac.cn/handle/337002/176384 https://doi.org/10.1029/2021GL092911 |
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ftchinacasciocas:oai:ir.qdio.ac.cn:337002/176384 2023-05-15T18:25:27+02:00 Delayed Collapse of the North Pacific Intermediate Water After the Glacial Termination Zhao, Debo Wan, Shiming Lu, Zhengyao Zhai, Lina Feng, Xuguang Shi, Xuefa Li, Anchun 2021-07-16 http://ir.qdio.ac.cn/handle/337002/176384 https://doi.org/10.1029/2021GL092911 英语 eng AMER GEOPHYSICAL UNION GEOPHYSICAL RESEARCH LETTERS http://ir.qdio.ac.cn/handle/337002/176384 doi:10.1029/2021GL092911 Okinawa Trough NPIW redox environment marine sediment trace elements Geology Geosciences Multidisciplinary MILLENNIAL-SCALE VARIATIONS CLIMATE-CHANGE STORM TRACKS SEA PRODUCTIVITY TEMPERATURES SEDIMENTS SURFACE VENTILATION 期刊论文 2021 ftchinacasciocas https://doi.org/10.1029/2021GL092911 2022-06-27T05:46:15Z Carbon release from the North Pacific in glacial-interglacial cycles has been mainly linked to the North Pacific Intermediate Water (NPIW) formation and associated carbon/nutrient water upwelling and biological productivity changes. However, relationship between NPIW and atmospheric CO2 change in the early interglacial remains unclear. Here we report a high-resolution sediment record of NPIW evolution based on paleo-redox changes in the Western North Pacific during the last 400 ka. Our proxy and model results reveal a delayed collapse of NPIW after the glacial termination was coeval with decreased salinity of intermediate water and increased net rainfall in the North Pacific. Such weakened NPIW formation in the North Pacific probably make a contribution to maintain high atmospheric CO2 concentrations through weakened intermediate-to-deep ocean stratification and reduced subsurface biological pump net efficiency, countering the return to more stratified conditions in the Southern Ocean, which should drive down atmospheric CO2 during the early interglacial. Report Southern Ocean Institute of Oceanology, Chinese Academy of Sciences: IOCAS-IR Pacific Southern Ocean Geophysical Research Letters 48 13 |
institution |
Open Polar |
collection |
Institute of Oceanology, Chinese Academy of Sciences: IOCAS-IR |
op_collection_id |
ftchinacasciocas |
language |
English |
topic |
Okinawa Trough NPIW redox environment marine sediment trace elements Geology Geosciences Multidisciplinary MILLENNIAL-SCALE VARIATIONS CLIMATE-CHANGE STORM TRACKS SEA PRODUCTIVITY TEMPERATURES SEDIMENTS SURFACE VENTILATION |
spellingShingle |
Okinawa Trough NPIW redox environment marine sediment trace elements Geology Geosciences Multidisciplinary MILLENNIAL-SCALE VARIATIONS CLIMATE-CHANGE STORM TRACKS SEA PRODUCTIVITY TEMPERATURES SEDIMENTS SURFACE VENTILATION Zhao, Debo Wan, Shiming Lu, Zhengyao Zhai, Lina Feng, Xuguang Shi, Xuefa Li, Anchun Delayed Collapse of the North Pacific Intermediate Water After the Glacial Termination |
topic_facet |
Okinawa Trough NPIW redox environment marine sediment trace elements Geology Geosciences Multidisciplinary MILLENNIAL-SCALE VARIATIONS CLIMATE-CHANGE STORM TRACKS SEA PRODUCTIVITY TEMPERATURES SEDIMENTS SURFACE VENTILATION |
description |
Carbon release from the North Pacific in glacial-interglacial cycles has been mainly linked to the North Pacific Intermediate Water (NPIW) formation and associated carbon/nutrient water upwelling and biological productivity changes. However, relationship between NPIW and atmospheric CO2 change in the early interglacial remains unclear. Here we report a high-resolution sediment record of NPIW evolution based on paleo-redox changes in the Western North Pacific during the last 400 ka. Our proxy and model results reveal a delayed collapse of NPIW after the glacial termination was coeval with decreased salinity of intermediate water and increased net rainfall in the North Pacific. Such weakened NPIW formation in the North Pacific probably make a contribution to maintain high atmospheric CO2 concentrations through weakened intermediate-to-deep ocean stratification and reduced subsurface biological pump net efficiency, countering the return to more stratified conditions in the Southern Ocean, which should drive down atmospheric CO2 during the early interglacial. |
format |
Report |
author |
Zhao, Debo Wan, Shiming Lu, Zhengyao Zhai, Lina Feng, Xuguang Shi, Xuefa Li, Anchun |
author_facet |
Zhao, Debo Wan, Shiming Lu, Zhengyao Zhai, Lina Feng, Xuguang Shi, Xuefa Li, Anchun |
author_sort |
Zhao, Debo |
title |
Delayed Collapse of the North Pacific Intermediate Water After the Glacial Termination |
title_short |
Delayed Collapse of the North Pacific Intermediate Water After the Glacial Termination |
title_full |
Delayed Collapse of the North Pacific Intermediate Water After the Glacial Termination |
title_fullStr |
Delayed Collapse of the North Pacific Intermediate Water After the Glacial Termination |
title_full_unstemmed |
Delayed Collapse of the North Pacific Intermediate Water After the Glacial Termination |
title_sort |
delayed collapse of the north pacific intermediate water after the glacial termination |
publisher |
AMER GEOPHYSICAL UNION |
publishDate |
2021 |
url |
http://ir.qdio.ac.cn/handle/337002/176384 https://doi.org/10.1029/2021GL092911 |
geographic |
Pacific Southern Ocean |
geographic_facet |
Pacific Southern Ocean |
genre |
Southern Ocean |
genre_facet |
Southern Ocean |
op_relation |
GEOPHYSICAL RESEARCH LETTERS http://ir.qdio.ac.cn/handle/337002/176384 doi:10.1029/2021GL092911 |
op_doi |
https://doi.org/10.1029/2021GL092911 |
container_title |
Geophysical Research Letters |
container_volume |
48 |
container_issue |
13 |
_version_ |
1766206923369086976 |