Supplementary material 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.c.4200449 2023-05-15T17:49:44+02:00 Supplementary material 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.c.4200449 https://figshare.com/collections/Supplementary_material_from_Capturing_the_global_signature_of_surface_ocean_acidification_during_the_Palaeocene_Eocene_Thermal_Maximum_/4200449 unknown Figshare https://dx.doi.org/10.1098/rsta.2017.0072 CC BY 4.0 https://creativecommons.org/licenses/by/4.0 CC-BY Geochemistry FOS Earth and related environmental sciences Oceanography Collection article 2018 ftdatacite https://doi.org/10.6084/m9.figshare.c.4200449 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’. Article in Journal/Newspaper Ocean acidification Planktonic foraminifera DataCite Metadata Store (German National Library of Science and Technology) |
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Open Polar |
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DataCite Metadata Store (German National Library of Science and Technology) |
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ftdatacite |
language |
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. Supplementary material 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 |
Article in Journal/Newspaper |
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 |
Supplementary material from "Capturing the global signature of surface ocean acidification during the Palaeocene–Eocene Thermal Maximum" |
title_short |
Supplementary material from "Capturing the global signature of surface ocean acidification during the Palaeocene–Eocene Thermal Maximum" |
title_full |
Supplementary material from "Capturing the global signature of surface ocean acidification during the Palaeocene–Eocene Thermal Maximum" |
title_fullStr |
Supplementary material from "Capturing the global signature of surface ocean acidification during the Palaeocene–Eocene Thermal Maximum" |
title_full_unstemmed |
Supplementary material from "Capturing the global signature of surface ocean acidification during the Palaeocene–Eocene Thermal Maximum" |
title_sort |
supplementary material from "capturing the global signature of surface ocean acidification during the palaeocene–eocene thermal maximum" |
publisher |
Figshare |
publishDate |
2018 |
url |
https://dx.doi.org/10.6084/m9.figshare.c.4200449 https://figshare.com/collections/Supplementary_material_from_Capturing_the_global_signature_of_surface_ocean_acidification_during_the_Palaeocene_Eocene_Thermal_Maximum_/4200449 |
genre |
Ocean acidification Planktonic foraminifera |
genre_facet |
Ocean acidification Planktonic foraminifera |
op_relation |
https://dx.doi.org/10.1098/rsta.2017.0072 |
op_rights |
CC BY 4.0 https://creativecommons.org/licenses/by/4.0 |
op_rightsnorm |
CC-BY |
op_doi |
https://doi.org/10.6084/m9.figshare.c.4200449 https://doi.org/10.1098/rsta.2017.0072 |
_version_ |
1766156170716774400 |