Age model description from Capturing the global signature of surface ocean acidification during the Palaeocene–Eocene Thermal Maximum
Geologically abrupt carbon perturbations such as the Palaeocene–Eocene Thermal Maximum (PETM, approx. 56 Ma) are the closest geological points of comparison to current anthropogenic carbon emissions. Associated with the rapid carbon release during this event are profound environmental changes in the...
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ftdatacite:10.6084/m9.figshare.6973931 2023-05-15T17:49:44+02:00 Age model description from Capturing the global signature of surface ocean acidification during the Palaeocene–Eocene Thermal Maximum Babila, Tali L. Penman, Donald E. Hönisch, Bärbel D. Clay Kelly Bralower, Timothy J. Rosenthal, Yair Zachos, James C. 2018 https://dx.doi.org/10.6084/m9.figshare.6973931 https://rs.figshare.com/articles/Age_model_description_from_Capturing_the_global_signature_of_surface_ocean_acidification_during_the_Palaeocene_Eocene_Thermal_Maximum/6973931 unknown The Royal Society https://dx.doi.org/10.1098/rsta.2017.0072 Creative Commons Attribution 4.0 International https://creativecommons.org/licenses/by/4.0/legalcode cc-by-4.0 CC-BY Geochemistry FOS Earth and related environmental sciences Oceanography Text article-journal Journal contribution ScholarlyArticle 2018 ftdatacite https://doi.org/10.6084/m9.figshare.6973931 https://doi.org/10.1098/rsta.2017.0072 2021-11-05T12:55:41Z Geologically abrupt carbon perturbations such as the Palaeocene–Eocene Thermal Maximum (PETM, approx. 56 Ma) are the closest geological points of comparison to current anthropogenic carbon emissions. Associated with the rapid carbon release during this event are profound environmental changes in the oceans including warming, deoxygenation and acidification. To evaluate the global extent of surface ocean acidification during the PETM, we present a compilation of new and published surface ocean carbonate chemistry and pH reconstructions from various palaeoceanographic settings. We use boron to calcium ratios (B/Ca) and boron isotopes ( δ 11 B) in surface- and thermocline-dwelling planktonic foraminifera to reconstruct ocean carbonate chemistry and pH. Our records exhibit a B/Ca reduction of 30–40% and a δ 11 B decline of 1.0–1.2‰ coeval with the carbon isotope excursion. The tight coupling between boron proxies and carbon isotope records is consistent with the interpretation that oceanic absorption of the carbon released at the onset of the PETM resulted in widespread surface ocean acidification. The remarkable similarity among records from different ocean regions suggests that the degree of ocean carbonate change was globally near uniform. We attribute the global extent of surface ocean acidification to elevated atmospheric carbon dioxide levels during the main phase of the PETM.This article is part of a discussion meeting issue ‘Hyperthermals—rapid and extreme global warming in our geological past’. Text Ocean acidification Planktonic foraminifera DataCite Metadata Store (German National Library of Science and Technology) |
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DataCite Metadata Store (German National Library of Science and Technology) |
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unknown |
topic |
Geochemistry FOS Earth and related environmental sciences Oceanography |
spellingShingle |
Geochemistry FOS Earth and related environmental sciences Oceanography Babila, Tali L. Penman, Donald E. Hönisch, Bärbel D. Clay Kelly Bralower, Timothy J. Rosenthal, Yair Zachos, James C. Age model description from Capturing the global signature of surface ocean acidification during the Palaeocene–Eocene Thermal Maximum |
topic_facet |
Geochemistry FOS Earth and related environmental sciences Oceanography |
description |
Geologically abrupt carbon perturbations such as the Palaeocene–Eocene Thermal Maximum (PETM, approx. 56 Ma) are the closest geological points of comparison to current anthropogenic carbon emissions. Associated with the rapid carbon release during this event are profound environmental changes in the oceans including warming, deoxygenation and acidification. To evaluate the global extent of surface ocean acidification during the PETM, we present a compilation of new and published surface ocean carbonate chemistry and pH reconstructions from various palaeoceanographic settings. We use boron to calcium ratios (B/Ca) and boron isotopes ( δ 11 B) in surface- and thermocline-dwelling planktonic foraminifera to reconstruct ocean carbonate chemistry and pH. Our records exhibit a B/Ca reduction of 30–40% and a δ 11 B decline of 1.0–1.2‰ coeval with the carbon isotope excursion. The tight coupling between boron proxies and carbon isotope records is consistent with the interpretation that oceanic absorption of the carbon released at the onset of the PETM resulted in widespread surface ocean acidification. The remarkable similarity among records from different ocean regions suggests that the degree of ocean carbonate change was globally near uniform. We attribute the global extent of surface ocean acidification to elevated atmospheric carbon dioxide levels during the main phase of the PETM.This article is part of a discussion meeting issue ‘Hyperthermals—rapid and extreme global warming in our geological past’. |
format |
Text |
author |
Babila, Tali L. Penman, Donald E. Hönisch, Bärbel D. Clay Kelly Bralower, Timothy J. Rosenthal, Yair Zachos, James C. |
author_facet |
Babila, Tali L. Penman, Donald E. Hönisch, Bärbel D. Clay Kelly Bralower, Timothy J. Rosenthal, Yair Zachos, James C. |
author_sort |
Babila, Tali L. |
title |
Age model description from Capturing the global signature of surface ocean acidification during the Palaeocene–Eocene Thermal Maximum |
title_short |
Age model description from Capturing the global signature of surface ocean acidification during the Palaeocene–Eocene Thermal Maximum |
title_full |
Age model description from Capturing the global signature of surface ocean acidification during the Palaeocene–Eocene Thermal Maximum |
title_fullStr |
Age model description from Capturing the global signature of surface ocean acidification during the Palaeocene–Eocene Thermal Maximum |
title_full_unstemmed |
Age model description from Capturing the global signature of surface ocean acidification during the Palaeocene–Eocene Thermal Maximum |
title_sort |
age model description from capturing the global signature of surface ocean acidification during the palaeocene–eocene thermal maximum |
publisher |
The Royal Society |
publishDate |
2018 |
url |
https://dx.doi.org/10.6084/m9.figshare.6973931 https://rs.figshare.com/articles/Age_model_description_from_Capturing_the_global_signature_of_surface_ocean_acidification_during_the_Palaeocene_Eocene_Thermal_Maximum/6973931 |
genre |
Ocean acidification Planktonic foraminifera |
genre_facet |
Ocean acidification Planktonic foraminifera |
op_relation |
https://dx.doi.org/10.1098/rsta.2017.0072 |
op_rights |
Creative Commons Attribution 4.0 International https://creativecommons.org/licenses/by/4.0/legalcode cc-by-4.0 |
op_rightsnorm |
CC-BY |
op_doi |
https://doi.org/10.6084/m9.figshare.6973931 https://doi.org/10.1098/rsta.2017.0072 |
_version_ |
1766156174016643072 |