Diatom carbon isotope data and CO2 reconstruction from ODP Site 145-882 through the late Pliocene
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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ftpangaea:oai:pangaea.de:doi:10.1594/PANGAEA.889751 2023-05-15T18:28:10+02:00 Diatom carbon isotope data and CO2 reconstruction from ODP Site 145-882 through the late Pliocene Swann, George E A Kendrick, Christopher P Dickson, Alexander J Worne, Savannah MEDIAN LATITUDE: 50.363300 * MEDIAN LONGITUDE: 167.599800 * SOUTH-BOUND LATITUDE: 50.363300 * WEST-BOUND LONGITUDE: 167.599600 * NORTH-BOUND LATITUDE: 50.363300 * EAST-BOUND LONGITUDE: 167.600000 * DATE/TIME START: 1992-07-08T10:30:00 * DATE/TIME END: 1992-08-08T17:30:00 * MINIMUM ELEVATION: -3255.0 m * MAXIMUM ELEVATION: -3255.0 m 2018-05-09 text/tab-separated-values, 217 data points https://doi.pangaea.de/10.1594/PANGAEA.889751 https://doi.org/10.1594/PANGAEA.889751 en eng PANGAEA https://doi.pangaea.de/10.1594/PANGAEA.889751 https://doi.org/10.1594/PANGAEA.889751 CC-BY-3.0: Creative Commons Attribution 3.0 Unported Access constraints: unrestricted info:eu-repo/semantics/openAccess CC-BY Supplement to: Swann, George E A; Kendrick, Christopher P; Dickson, Alexander J; Worne, Savannah (2018): Late Pliocene Marine ρCO₂ Reconstructions From the Subarctic Pacific Ocean. Paleoceanography and Paleoclimatology, 33(5), 457-469, https://doi.org/10.1029/2017PA003296 145-882A 145-882B AGE Carbon dioxide partial pressure standard deviation Coscinodiscus marginatus Coscinodiscus radiatus Diatoms other DRILL Drilling/drill rig Event label Joides Resolution Leg145 North Pacific Ocean Ocean Drilling Program ODP Sample code/label δ13C diatom-bound organic matter Dataset 2018 ftpangaea https://doi.org/10.1594/PANGAEA.889751 https://doi.org/10.1029/2017PA003296 2023-01-20T09:11:00Z 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. Dataset Subarctic PANGAEA - Data Publisher for Earth & Environmental Science Pacific ENVELOPE(167.599600,167.600000,50.363300,50.363300) |
institution |
Open Polar |
collection |
PANGAEA - Data Publisher for Earth & Environmental Science |
op_collection_id |
ftpangaea |
language |
English |
topic |
145-882A 145-882B AGE Carbon dioxide partial pressure standard deviation Coscinodiscus marginatus Coscinodiscus radiatus Diatoms other DRILL Drilling/drill rig Event label Joides Resolution Leg145 North Pacific Ocean Ocean Drilling Program ODP Sample code/label δ13C diatom-bound organic matter |
spellingShingle |
145-882A 145-882B AGE Carbon dioxide partial pressure standard deviation Coscinodiscus marginatus Coscinodiscus radiatus Diatoms other DRILL Drilling/drill rig Event label Joides Resolution Leg145 North Pacific Ocean Ocean Drilling Program ODP Sample code/label δ13C diatom-bound organic matter Swann, George E A Kendrick, Christopher P Dickson, Alexander J Worne, Savannah Diatom carbon isotope data and CO2 reconstruction from ODP Site 145-882 through the late Pliocene |
topic_facet |
145-882A 145-882B AGE Carbon dioxide partial pressure standard deviation Coscinodiscus marginatus Coscinodiscus radiatus Diatoms other DRILL Drilling/drill rig Event label Joides Resolution Leg145 North Pacific Ocean Ocean Drilling Program ODP Sample code/label δ13C diatom-bound organic matter |
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 |
Dataset |
author |
Swann, George E A Kendrick, Christopher P Dickson, Alexander J Worne, Savannah |
author_facet |
Swann, George E A Kendrick, Christopher P Dickson, Alexander J Worne, Savannah |
author_sort |
Swann, George E A |
title |
Diatom carbon isotope data and CO2 reconstruction from ODP Site 145-882 through the late Pliocene |
title_short |
Diatom carbon isotope data and CO2 reconstruction from ODP Site 145-882 through the late Pliocene |
title_full |
Diatom carbon isotope data and CO2 reconstruction from ODP Site 145-882 through the late Pliocene |
title_fullStr |
Diatom carbon isotope data and CO2 reconstruction from ODP Site 145-882 through the late Pliocene |
title_full_unstemmed |
Diatom carbon isotope data and CO2 reconstruction from ODP Site 145-882 through the late Pliocene |
title_sort |
diatom carbon isotope data and co2 reconstruction from odp site 145-882 through the late pliocene |
publisher |
PANGAEA |
publishDate |
2018 |
url |
https://doi.pangaea.de/10.1594/PANGAEA.889751 https://doi.org/10.1594/PANGAEA.889751 |
op_coverage |
MEDIAN LATITUDE: 50.363300 * MEDIAN LONGITUDE: 167.599800 * SOUTH-BOUND LATITUDE: 50.363300 * WEST-BOUND LONGITUDE: 167.599600 * NORTH-BOUND LATITUDE: 50.363300 * EAST-BOUND LONGITUDE: 167.600000 * DATE/TIME START: 1992-07-08T10:30:00 * DATE/TIME END: 1992-08-08T17:30:00 * MINIMUM ELEVATION: -3255.0 m * MAXIMUM ELEVATION: -3255.0 m |
long_lat |
ENVELOPE(167.599600,167.600000,50.363300,50.363300) |
geographic |
Pacific |
geographic_facet |
Pacific |
genre |
Subarctic |
genre_facet |
Subarctic |
op_source |
Supplement to: Swann, George E A; Kendrick, Christopher P; Dickson, Alexander J; Worne, Savannah (2018): Late Pliocene Marine ρCO₂ Reconstructions From the Subarctic Pacific Ocean. Paleoceanography and Paleoclimatology, 33(5), 457-469, https://doi.org/10.1029/2017PA003296 |
op_relation |
https://doi.pangaea.de/10.1594/PANGAEA.889751 https://doi.org/10.1594/PANGAEA.889751 |
op_rights |
CC-BY-3.0: Creative Commons Attribution 3.0 Unported Access constraints: unrestricted info:eu-repo/semantics/openAccess |
op_rightsnorm |
CC-BY |
op_doi |
https://doi.org/10.1594/PANGAEA.889751 https://doi.org/10.1029/2017PA003296 |
_version_ |
1766210533987450880 |