Late Pliocene marine pCO2 reconstructions from the Subarctic Pacific Ocean
The development of large ice-sheets across the Northern Hemisphere during the late Pliocene and the emergence of the glacial-interglacial cycles that punctuate the Quaternary mark a significant threshold in Earth's climate history. Although a number of different mechanisms have been proposed to...
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ftdatacite:10.17605/osf.io/u3cws 2023-05-15T18:27:57+02:00 Late Pliocene marine pCO2 reconstructions from the Subarctic Pacific Ocean Swann, George Kendrick, Chris Dickson, Alex Worne, Savannah 2018 https://dx.doi.org/10.17605/osf.io/u3cws https://eartharxiv.org/u3cws/ unknown EarthArXiv https://dx.doi.org/10.1029/2017PA003296 CC-By Attribution 4.0 International Physical Sciences and Mathematics Earth Sciences Geochemistry FOS Earth and related environmental sciences Geology Preprint Text article-journal ScholarlyArticle 2018 ftdatacite https://doi.org/10.17605/osf.io/u3cws 2021-11-05T12:55:41Z The development of large ice-sheets across the Northern Hemisphere during the late Pliocene and the emergence of the glacial-interglacial cycles that punctuate the Quaternary mark a significant threshold in Earth's climate history. Although a number of different mechanisms have been proposed to initiate this cooling and the onset of major Northern Hemisphere glaciation, reductions in atmospheric concentrations of CO2 likely played a key role. The emergence of a stratified (halocline) water column in the subarctic north-west Pacific Ocean at 2.73 Ma has often been interpreted as an event which would have limited oceanic ventilation of CO2 to the atmosphere, thereby helping to cool the global climate system. Here, diatom carbon isotopes (δ13Cdiatom) are used to reconstruct changes in regional carbon dynamics through this interval. Results show that the development of a salinity stratification did not fundamental alter the net oceanic/atmospheric flux of CO2 in the subarctic north-west Pacific Ocean through the late Pliocene/early Quaternary. These results provide further insights into the long-term controls on global carbon cycling and the role of the subarctic Pacific Ocean in instigating global climatic changes. Report Subarctic DataCite Metadata Store (German National Library of Science and Technology) Pacific |
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DataCite Metadata Store (German National Library of Science and Technology) |
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topic |
Physical Sciences and Mathematics Earth Sciences Geochemistry FOS Earth and related environmental sciences Geology |
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Physical Sciences and Mathematics Earth Sciences Geochemistry FOS Earth and related environmental sciences Geology Swann, George Kendrick, Chris Dickson, Alex Worne, Savannah Late Pliocene marine pCO2 reconstructions from the Subarctic Pacific Ocean |
topic_facet |
Physical Sciences and Mathematics Earth Sciences Geochemistry FOS Earth and related environmental sciences Geology |
description |
The development of large ice-sheets across the Northern Hemisphere during the late Pliocene and the emergence of the glacial-interglacial cycles that punctuate the Quaternary mark a significant threshold in Earth's climate history. Although a number of different mechanisms have been proposed to initiate this cooling and the onset of major Northern Hemisphere glaciation, reductions in atmospheric concentrations of CO2 likely played a key role. The emergence of a stratified (halocline) water column in the subarctic north-west Pacific Ocean at 2.73 Ma has often been interpreted as an event which would have limited oceanic ventilation of CO2 to the atmosphere, thereby helping to cool the global climate system. Here, diatom carbon isotopes (δ13Cdiatom) are used to reconstruct changes in regional carbon dynamics through this interval. Results show that the development of a salinity stratification did not fundamental alter the net oceanic/atmospheric flux of CO2 in the subarctic north-west Pacific Ocean through the late Pliocene/early Quaternary. These results provide further insights into the long-term controls on global carbon cycling and the role of the subarctic Pacific Ocean in instigating global climatic changes. |
format |
Report |
author |
Swann, George Kendrick, Chris Dickson, Alex Worne, Savannah |
author_facet |
Swann, George Kendrick, Chris Dickson, Alex Worne, Savannah |
author_sort |
Swann, George |
title |
Late Pliocene marine pCO2 reconstructions from the Subarctic Pacific Ocean |
title_short |
Late Pliocene marine pCO2 reconstructions from the Subarctic Pacific Ocean |
title_full |
Late Pliocene marine pCO2 reconstructions from the Subarctic Pacific Ocean |
title_fullStr |
Late Pliocene marine pCO2 reconstructions from the Subarctic Pacific Ocean |
title_full_unstemmed |
Late Pliocene marine pCO2 reconstructions from the Subarctic Pacific Ocean |
title_sort |
late pliocene marine pco2 reconstructions from the subarctic pacific ocean |
publisher |
EarthArXiv |
publishDate |
2018 |
url |
https://dx.doi.org/10.17605/osf.io/u3cws https://eartharxiv.org/u3cws/ |
geographic |
Pacific |
geographic_facet |
Pacific |
genre |
Subarctic |
genre_facet |
Subarctic |
op_relation |
https://dx.doi.org/10.1029/2017PA003296 |
op_rights |
CC-By Attribution 4.0 International |
op_doi |
https://doi.org/10.17605/osf.io/u3cws |
_version_ |
1766210214079496192 |