Supplementary Figure S1 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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ftroysocietyfig:oai:figshare.com:article/6973937 2023-05-15T17:49:28+02:00 Supplementary Figure S1 from Capturing the global signature of surface ocean acidification during the Palaeocene–Eocene Thermal Maximum Tali L. Babila Donald E. Penman Bärbel Hönisch D. Clay Kelly Timothy J. Bralower Yair Rosenthal James C. Zachos 2018-08-16T11:17:03Z https://doi.org/10.6084/m9.figshare.6973937.v1 https://figshare.com/articles/journal_contribution/Supplementary_Figure_S1_from_Capturing_the_global_signature_of_surface_ocean_acidification_during_the_Palaeocene_Eocene_Thermal_Maximum/6973937 unknown doi:10.6084/m9.figshare.6973937.v1 https://figshare.com/articles/journal_contribution/Supplementary_Figure_S1_from_Capturing_the_global_signature_of_surface_ocean_acidification_during_the_Palaeocene_Eocene_Thermal_Maximum/6973937 CC BY 4.0 CC-BY Geochemistry Oceanography Palaeocene–Eocene Thermal Maximum ocean acidification boron isotope boron/calcium planktonic foraminifera Text Journal contribution 2018 ftroysocietyfig https://doi.org/10.6084/m9.figshare.6973937.v1 2022-01-01T19:45:58Z 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’. Other Non-Article Part of Journal/Newspaper Ocean acidification Planktonic foraminifera The Royal Society: Figshare |
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Open Polar |
collection |
The Royal Society: Figshare |
op_collection_id |
ftroysocietyfig |
language |
unknown |
topic |
Geochemistry Oceanography Palaeocene–Eocene Thermal Maximum ocean acidification boron isotope boron/calcium planktonic foraminifera |
spellingShingle |
Geochemistry Oceanography Palaeocene–Eocene Thermal Maximum ocean acidification boron isotope boron/calcium planktonic foraminifera Tali L. Babila Donald E. Penman Bärbel Hönisch D. Clay Kelly Timothy J. Bralower Yair Rosenthal James C. Zachos Supplementary Figure S1 from Capturing the global signature of surface ocean acidification during the Palaeocene–Eocene Thermal Maximum |
topic_facet |
Geochemistry Oceanography Palaeocene–Eocene Thermal Maximum ocean acidification boron isotope boron/calcium planktonic foraminifera |
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 |
Other Non-Article Part of Journal/Newspaper |
author |
Tali L. Babila Donald E. Penman Bärbel Hönisch D. Clay Kelly Timothy J. Bralower Yair Rosenthal James C. Zachos |
author_facet |
Tali L. Babila Donald E. Penman Bärbel Hönisch D. Clay Kelly Timothy J. Bralower Yair Rosenthal James C. Zachos |
author_sort |
Tali L. Babila |
title |
Supplementary Figure S1 from Capturing the global signature of surface ocean acidification during the Palaeocene–Eocene Thermal Maximum |
title_short |
Supplementary Figure S1 from Capturing the global signature of surface ocean acidification during the Palaeocene–Eocene Thermal Maximum |
title_full |
Supplementary Figure S1 from Capturing the global signature of surface ocean acidification during the Palaeocene–Eocene Thermal Maximum |
title_fullStr |
Supplementary Figure S1 from Capturing the global signature of surface ocean acidification during the Palaeocene–Eocene Thermal Maximum |
title_full_unstemmed |
Supplementary Figure S1 from Capturing the global signature of surface ocean acidification during the Palaeocene–Eocene Thermal Maximum |
title_sort |
supplementary figure s1 from capturing the global signature of surface ocean acidification during the palaeocene–eocene thermal maximum |
publishDate |
2018 |
url |
https://doi.org/10.6084/m9.figshare.6973937.v1 https://figshare.com/articles/journal_contribution/Supplementary_Figure_S1_from_Capturing_the_global_signature_of_surface_ocean_acidification_during_the_Palaeocene_Eocene_Thermal_Maximum/6973937 |
genre |
Ocean acidification Planktonic foraminifera |
genre_facet |
Ocean acidification Planktonic foraminifera |
op_relation |
doi:10.6084/m9.figshare.6973937.v1 https://figshare.com/articles/journal_contribution/Supplementary_Figure_S1_from_Capturing_the_global_signature_of_surface_ocean_acidification_during_the_Palaeocene_Eocene_Thermal_Maximum/6973937 |
op_rights |
CC BY 4.0 |
op_rightsnorm |
CC-BY |
op_doi |
https://doi.org/10.6084/m9.figshare.6973937.v1 |
_version_ |
1766155816143945728 |