Ice sheet and precession controlled subarctic Pacific productivity and upwelling over the last 550,000 years
The polar oceans play a vital role in regulating atmospheric CO2 concentrations (pCO(2)) during the Pleistocene glacial cycles. However, despite being the largest modern reservoir of respired carbon, the impact of the subarctic Pacific remains poorly understood due to limited records. Here, we prese...
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NATURE PORTFOLIO
2024
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Online Access: | http://ir.qdio.ac.cn/handle/337002/186491 http://ir.qdio.ac.cn/handle/337002/186492 https://doi.org/10.1038/s41467-024-47871-8 |
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ftchinacasciocas:oai:ir.qdio.ac.cn:337002/186492 2024-09-15T18:12:29+00:00 Ice sheet and precession controlled subarctic Pacific productivity and upwelling over the last 550,000 years Yao, Zhengquan Shi, Xuefa Yin, Qiuzhen Jaccard, Samuel Liu, Yanguang Guo, Zhengtang Gorbarenko, Sergey A. Wang, Kunshan Chen, Tianyu Wu, Zhipeng Nan, Qingyun Zou, Jianjun Wang, Hongmin Cui, Jingjing Wang, Anqi Yang, Gongxu Zhu, Aimei Bosin, Aleksandr Vasilenko, Yuriy Yu, Yonggui 2024-04-25 http://ir.qdio.ac.cn/handle/337002/186491 http://ir.qdio.ac.cn/handle/337002/186492 https://doi.org/10.1038/s41467-024-47871-8 英语 eng NATURE PORTFOLIO NATURE COMMUNICATIONS http://ir.qdio.ac.cn/handle/337002/186491 http://ir.qdio.ac.cn/handle/337002/186492 doi:10.1038/s41467-024-47871-8 Science & Technology - Other Topics Multidisciplinary Sciences NORTH PACIFIC CARBON-DIOXIDE BIOGENIC OPAL OCEAN PRODUCTIVITY CLIMATE SEDIMENTS ATLANTIC WESTERN RECORD RISE 期刊论文 2024 ftchinacasciocas https://doi.org/10.1038/s41467-024-47871-8 2024-09-05T23:42:51Z The polar oceans play a vital role in regulating atmospheric CO2 concentrations (pCO(2)) during the Pleistocene glacial cycles. However, despite being the largest modern reservoir of respired carbon, the impact of the subarctic Pacific remains poorly understood due to limited records. Here, we present high-resolution, 230Th-normalized export productivity records from the subarctic northwestern Pacific covering the last five glacial cycles. Our records display pronounced, glacial-interglacial cyclicity superimposed with precessional-driven variability, with warm interglacial climate and high boreal summer insolation providing favorable conditions to sustain upwelling of nutrient-rich subsurface waters and hence increased export productivity. Our transient model simulations consistently show that ice sheets and to a lesser degree, precession are the main drivers that control the strength and latitudinal position of the westerlies. Enhanced upwelling of nutrient/carbon-rich water caused by the intensification and poleward migration of the northern westerlies during warmer climate intervals would have led to the release of previously sequestered CO2 from the subarctic Pacific to the atmosphere. Our results also highlight the significant role of the subarctic Pacific in modulating pCO(2) changes during the Pleistocene climate cycles, especially on precession timescale (similar to 20 kyr). Report Ice Sheet Subarctic Institute of Oceanology, Chinese Academy of Sciences: IOCAS-IR Nature Communications 15 1 |
institution |
Open Polar |
collection |
Institute of Oceanology, Chinese Academy of Sciences: IOCAS-IR |
op_collection_id |
ftchinacasciocas |
language |
English |
topic |
Science & Technology - Other Topics Multidisciplinary Sciences NORTH PACIFIC CARBON-DIOXIDE BIOGENIC OPAL OCEAN PRODUCTIVITY CLIMATE SEDIMENTS ATLANTIC WESTERN RECORD RISE |
spellingShingle |
Science & Technology - Other Topics Multidisciplinary Sciences NORTH PACIFIC CARBON-DIOXIDE BIOGENIC OPAL OCEAN PRODUCTIVITY CLIMATE SEDIMENTS ATLANTIC WESTERN RECORD RISE Yao, Zhengquan Shi, Xuefa Yin, Qiuzhen Jaccard, Samuel Liu, Yanguang Guo, Zhengtang Gorbarenko, Sergey A. Wang, Kunshan Chen, Tianyu Wu, Zhipeng Nan, Qingyun Zou, Jianjun Wang, Hongmin Cui, Jingjing Wang, Anqi Yang, Gongxu Zhu, Aimei Bosin, Aleksandr Vasilenko, Yuriy Yu, Yonggui Ice sheet and precession controlled subarctic Pacific productivity and upwelling over the last 550,000 years |
topic_facet |
Science & Technology - Other Topics Multidisciplinary Sciences NORTH PACIFIC CARBON-DIOXIDE BIOGENIC OPAL OCEAN PRODUCTIVITY CLIMATE SEDIMENTS ATLANTIC WESTERN RECORD RISE |
description |
The polar oceans play a vital role in regulating atmospheric CO2 concentrations (pCO(2)) during the Pleistocene glacial cycles. However, despite being the largest modern reservoir of respired carbon, the impact of the subarctic Pacific remains poorly understood due to limited records. Here, we present high-resolution, 230Th-normalized export productivity records from the subarctic northwestern Pacific covering the last five glacial cycles. Our records display pronounced, glacial-interglacial cyclicity superimposed with precessional-driven variability, with warm interglacial climate and high boreal summer insolation providing favorable conditions to sustain upwelling of nutrient-rich subsurface waters and hence increased export productivity. Our transient model simulations consistently show that ice sheets and to a lesser degree, precession are the main drivers that control the strength and latitudinal position of the westerlies. Enhanced upwelling of nutrient/carbon-rich water caused by the intensification and poleward migration of the northern westerlies during warmer climate intervals would have led to the release of previously sequestered CO2 from the subarctic Pacific to the atmosphere. Our results also highlight the significant role of the subarctic Pacific in modulating pCO(2) changes during the Pleistocene climate cycles, especially on precession timescale (similar to 20 kyr). |
format |
Report |
author |
Yao, Zhengquan Shi, Xuefa Yin, Qiuzhen Jaccard, Samuel Liu, Yanguang Guo, Zhengtang Gorbarenko, Sergey A. Wang, Kunshan Chen, Tianyu Wu, Zhipeng Nan, Qingyun Zou, Jianjun Wang, Hongmin Cui, Jingjing Wang, Anqi Yang, Gongxu Zhu, Aimei Bosin, Aleksandr Vasilenko, Yuriy Yu, Yonggui |
author_facet |
Yao, Zhengquan Shi, Xuefa Yin, Qiuzhen Jaccard, Samuel Liu, Yanguang Guo, Zhengtang Gorbarenko, Sergey A. Wang, Kunshan Chen, Tianyu Wu, Zhipeng Nan, Qingyun Zou, Jianjun Wang, Hongmin Cui, Jingjing Wang, Anqi Yang, Gongxu Zhu, Aimei Bosin, Aleksandr Vasilenko, Yuriy Yu, Yonggui |
author_sort |
Yao, Zhengquan |
title |
Ice sheet and precession controlled subarctic Pacific productivity and upwelling over the last 550,000 years |
title_short |
Ice sheet and precession controlled subarctic Pacific productivity and upwelling over the last 550,000 years |
title_full |
Ice sheet and precession controlled subarctic Pacific productivity and upwelling over the last 550,000 years |
title_fullStr |
Ice sheet and precession controlled subarctic Pacific productivity and upwelling over the last 550,000 years |
title_full_unstemmed |
Ice sheet and precession controlled subarctic Pacific productivity and upwelling over the last 550,000 years |
title_sort |
ice sheet and precession controlled subarctic pacific productivity and upwelling over the last 550,000 years |
publisher |
NATURE PORTFOLIO |
publishDate |
2024 |
url |
http://ir.qdio.ac.cn/handle/337002/186491 http://ir.qdio.ac.cn/handle/337002/186492 https://doi.org/10.1038/s41467-024-47871-8 |
genre |
Ice Sheet Subarctic |
genre_facet |
Ice Sheet Subarctic |
op_relation |
NATURE COMMUNICATIONS http://ir.qdio.ac.cn/handle/337002/186491 http://ir.qdio.ac.cn/handle/337002/186492 doi:10.1038/s41467-024-47871-8 |
op_doi |
https://doi.org/10.1038/s41467-024-47871-8 |
container_title |
Nature Communications |
container_volume |
15 |
container_issue |
1 |
_version_ |
1810450063814557696 |