Abrupt fluctuations in North Pacific Intermediate Water modulated changes in deglacial atmospheric CO2
As a major reservoir of heat and CO2, the Pacific Ocean is an important component of the global climate system, but the nature of its circulation under different climatic conditions remains poorly understood. We present sedimentary records of surface water hydrography and nutrient dynamics from the...
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ftdoajarticles:oai:doaj.org/article:d2244701c250409a827fb7ec875a99a5 2023-05-15T18:18:37+02:00 Abrupt fluctuations in North Pacific Intermediate Water modulated changes in deglacial atmospheric CO2 Yanguang Liu Yue Qiu Dongling Li Antonina V. Artemova Yuying Zhang Aleksandr A. Bosin Sergey A. Gorbarenko Qingsong Liu Debo Zhao Longbin Sha Yi Zhong 2022-09-01T00:00:00Z https://doi.org/10.3389/fmars.2022.945110 https://doaj.org/article/d2244701c250409a827fb7ec875a99a5 EN eng Frontiers Media S.A. https://www.frontiersin.org/articles/10.3389/fmars.2022.945110/full https://doaj.org/toc/2296-7745 2296-7745 doi:10.3389/fmars.2022.945110 https://doaj.org/article/d2244701c250409a827fb7ec875a99a5 Frontiers in Marine Science, Vol 9 (2022) sea surface temperature North Pacific Intermediate Water biological productivity CO2 subarctic Pacific Ocean Science Q General. Including nature conservation geographical distribution QH1-199.5 article 2022 ftdoajarticles https://doi.org/10.3389/fmars.2022.945110 2022-12-30T23:30:44Z As a major reservoir of heat and CO2, the Pacific Ocean is an important component of the global climate system, but the nature of its circulation under different climatic conditions remains poorly understood. We present sedimentary records of surface water hydrography and nutrient dynamics from the subarctic Pacific Ocean, with the aim of investigating changes in sea-ice coverage, biological productivity, and sea surface temperature in the subarctic Northwest Pacific since 32 kyr. Our records indicate an enhanced North Pacific surface water stratification from the last glacial to Heinrich Stadial 1, which generally limited the siliceous productivity supply to the surface water. A productivity peak during the Bølling/Allerød warm interval was associated with an increase in the atmospheric pCO2, and it was driven by the increased supply of nutrient- and CO2-rich waters. This process can be attributed to the collapse of the North Pacific Intermediate Water formation at the onset of the Bølling/Allerød interstadial. Moreover, a northward shift of the westerly winds and the gyre boundary could have modulated the expansion of the subpolar gyre, driving changes in poleward heat transport, biogeochemistry, and the hydroclimate of the North Pacific. Our results are consistent with modern evidence for a northward shift of the westerlies in response to global warming, which will likely result in CO2 outgassing from the subarctic Pacific Ocean in the future. Article in Journal/Newspaper Sea ice Subarctic Directory of Open Access Journals: DOAJ Articles Pacific Frontiers in Marine Science 9 |
institution |
Open Polar |
collection |
Directory of Open Access Journals: DOAJ Articles |
op_collection_id |
ftdoajarticles |
language |
English |
topic |
sea surface temperature North Pacific Intermediate Water biological productivity CO2 subarctic Pacific Ocean Science Q General. Including nature conservation geographical distribution QH1-199.5 |
spellingShingle |
sea surface temperature North Pacific Intermediate Water biological productivity CO2 subarctic Pacific Ocean Science Q General. Including nature conservation geographical distribution QH1-199.5 Yanguang Liu Yue Qiu Dongling Li Antonina V. Artemova Yuying Zhang Aleksandr A. Bosin Sergey A. Gorbarenko Qingsong Liu Debo Zhao Longbin Sha Yi Zhong Abrupt fluctuations in North Pacific Intermediate Water modulated changes in deglacial atmospheric CO2 |
topic_facet |
sea surface temperature North Pacific Intermediate Water biological productivity CO2 subarctic Pacific Ocean Science Q General. Including nature conservation geographical distribution QH1-199.5 |
description |
As a major reservoir of heat and CO2, the Pacific Ocean is an important component of the global climate system, but the nature of its circulation under different climatic conditions remains poorly understood. We present sedimentary records of surface water hydrography and nutrient dynamics from the subarctic Pacific Ocean, with the aim of investigating changes in sea-ice coverage, biological productivity, and sea surface temperature in the subarctic Northwest Pacific since 32 kyr. Our records indicate an enhanced North Pacific surface water stratification from the last glacial to Heinrich Stadial 1, which generally limited the siliceous productivity supply to the surface water. A productivity peak during the Bølling/Allerød warm interval was associated with an increase in the atmospheric pCO2, and it was driven by the increased supply of nutrient- and CO2-rich waters. This process can be attributed to the collapse of the North Pacific Intermediate Water formation at the onset of the Bølling/Allerød interstadial. Moreover, a northward shift of the westerly winds and the gyre boundary could have modulated the expansion of the subpolar gyre, driving changes in poleward heat transport, biogeochemistry, and the hydroclimate of the North Pacific. Our results are consistent with modern evidence for a northward shift of the westerlies in response to global warming, which will likely result in CO2 outgassing from the subarctic Pacific Ocean in the future. |
format |
Article in Journal/Newspaper |
author |
Yanguang Liu Yue Qiu Dongling Li Antonina V. Artemova Yuying Zhang Aleksandr A. Bosin Sergey A. Gorbarenko Qingsong Liu Debo Zhao Longbin Sha Yi Zhong |
author_facet |
Yanguang Liu Yue Qiu Dongling Li Antonina V. Artemova Yuying Zhang Aleksandr A. Bosin Sergey A. Gorbarenko Qingsong Liu Debo Zhao Longbin Sha Yi Zhong |
author_sort |
Yanguang Liu |
title |
Abrupt fluctuations in North Pacific Intermediate Water modulated changes in deglacial atmospheric CO2 |
title_short |
Abrupt fluctuations in North Pacific Intermediate Water modulated changes in deglacial atmospheric CO2 |
title_full |
Abrupt fluctuations in North Pacific Intermediate Water modulated changes in deglacial atmospheric CO2 |
title_fullStr |
Abrupt fluctuations in North Pacific Intermediate Water modulated changes in deglacial atmospheric CO2 |
title_full_unstemmed |
Abrupt fluctuations in North Pacific Intermediate Water modulated changes in deglacial atmospheric CO2 |
title_sort |
abrupt fluctuations in north pacific intermediate water modulated changes in deglacial atmospheric co2 |
publisher |
Frontiers Media S.A. |
publishDate |
2022 |
url |
https://doi.org/10.3389/fmars.2022.945110 https://doaj.org/article/d2244701c250409a827fb7ec875a99a5 |
geographic |
Pacific |
geographic_facet |
Pacific |
genre |
Sea ice Subarctic |
genre_facet |
Sea ice Subarctic |
op_source |
Frontiers in Marine Science, Vol 9 (2022) |
op_relation |
https://www.frontiersin.org/articles/10.3389/fmars.2022.945110/full https://doaj.org/toc/2296-7745 2296-7745 doi:10.3389/fmars.2022.945110 https://doaj.org/article/d2244701c250409a827fb7ec875a99a5 |
op_doi |
https://doi.org/10.3389/fmars.2022.945110 |
container_title |
Frontiers in Marine Science |
container_volume |
9 |
_version_ |
1766195245938114560 |