A 100 Myr history of the carbon cycle based on the 400 kyr cycle in marine δ 13 C benthic records
International audience Documenting the past coevolution of Earth temperatures and of the carbon cycle is of paramount importance for our understanding of climate dynamics. Atmospheric CO2 is well constrained over the last million years through direct measurements in air bubbles from Antarctic ice co...
Published in: | Paleoceanography |
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Online Access: | https://hal.archives-ouvertes.fr/hal-02902777 https://hal.archives-ouvertes.fr/hal-02902777/document https://hal.archives-ouvertes.fr/hal-02902777/file/2014PA002693%281%29.pdf https://doi.org/10.1002/2014PA002693 |
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ftccsdartic:oai:HAL:hal-02902777v1 2023-05-15T13:54:50+02:00 A 100 Myr history of the carbon cycle based on the 400 kyr cycle in marine δ 13 C benthic records Paillard, Didier Donnadieu, Yannick Modélisation du climat (CLIM) Laboratoire des Sciences du Climat et de l'Environnement Gif-sur-Yvette (LSCE) Institut national des sciences de l'Univers (INSU - CNRS)-Université Paris-Saclay-Centre National de la Recherche Scientifique (CNRS)-Commissariat à l'énergie atomique et aux énergies alternatives (CEA)-Université de Versailles Saint-Quentin-en-Yvelines (UVSQ)-Institut national des sciences de l'Univers (INSU - CNRS)-Université Paris-Saclay-Centre National de la Recherche Scientifique (CNRS)-Commissariat à l'énergie atomique et aux énergies alternatives (CEA)-Université de Versailles Saint-Quentin-en-Yvelines (UVSQ) 2014 https://hal.archives-ouvertes.fr/hal-02902777 https://hal.archives-ouvertes.fr/hal-02902777/document https://hal.archives-ouvertes.fr/hal-02902777/file/2014PA002693%281%29.pdf https://doi.org/10.1002/2014PA002693 en eng HAL CCSD American Geophysical Union info:eu-repo/semantics/altIdentifier/doi/10.1002/2014PA002693 hal-02902777 https://hal.archives-ouvertes.fr/hal-02902777 https://hal.archives-ouvertes.fr/hal-02902777/document https://hal.archives-ouvertes.fr/hal-02902777/file/2014PA002693%281%29.pdf doi:10.1002/2014PA002693 info:eu-repo/semantics/OpenAccess ISSN: 0883-8305 Paleoceanography https://hal.archives-ouvertes.fr/hal-02902777 Paleoceanography, American Geophysical Union, 2014, 29 (12), pp.1249-1255. ⟨10.1002/2014PA002693⟩ [SDU.OCEAN]Sciences of the Universe [physics]/Ocean Atmosphere [SDU.STU.OC]Sciences of the Universe [physics]/Earth Sciences/Oceanography [SDU.STU.CL]Sciences of the Universe [physics]/Earth Sciences/Climatology info:eu-repo/semantics/article Journal articles 2014 ftccsdartic https://doi.org/10.1002/2014PA002693 2021-12-18T23:59:15Z International audience Documenting the past coevolution of Earth temperatures and of the carbon cycle is of paramount importance for our understanding of climate dynamics. Atmospheric CO2 is well constrained over the last million years through direct measurements in air bubbles from Antarctic ice cores. For older times, many different and sometimes conflicting proxies have been suggested. Here we provide a new methodology to constrain the carbon cycle in the past, based on marine benthic δ13C records. Marine δ13C data are recording a persistent 400 kyr cycle, with an amplitude primarily linked to the total amount of carbon in the ocean, or dissolved inorganic carbon (DIC). By extracting this amplitude from published records, we obtain a new strong constraint on the 100 Myr history of Earth's carbon cycle. The obtained Cenozoic evolution of DIC is in surprisingly in a good agreement with existing reconstructions of pCO2, suggesting that pCO2 is mostly driven by DIC changes over this period. In contrast, we find no strong decreasing trend in DIC between the Cretaceous and the Cenozoic, suggesting that Cretaceous atmospheric pCO2 levels were limited, and high temperatures at this time should be explained by other mechanisms. Alternatively, high Cretaceous atmospheric pCO2 could occur as a consequence of changes in oceanic chemistry but not carbon content. Article in Journal/Newspaper Antarc* Antarctic Archive ouverte HAL (Hyper Article en Ligne, CCSD - Centre pour la Communication Scientifique Directe) Antarctic Paleoceanography 29 12 1249 1255 |
institution |
Open Polar |
collection |
Archive ouverte HAL (Hyper Article en Ligne, CCSD - Centre pour la Communication Scientifique Directe) |
op_collection_id |
ftccsdartic |
language |
English |
topic |
[SDU.OCEAN]Sciences of the Universe [physics]/Ocean Atmosphere [SDU.STU.OC]Sciences of the Universe [physics]/Earth Sciences/Oceanography [SDU.STU.CL]Sciences of the Universe [physics]/Earth Sciences/Climatology |
spellingShingle |
[SDU.OCEAN]Sciences of the Universe [physics]/Ocean Atmosphere [SDU.STU.OC]Sciences of the Universe [physics]/Earth Sciences/Oceanography [SDU.STU.CL]Sciences of the Universe [physics]/Earth Sciences/Climatology Paillard, Didier Donnadieu, Yannick A 100 Myr history of the carbon cycle based on the 400 kyr cycle in marine δ 13 C benthic records |
topic_facet |
[SDU.OCEAN]Sciences of the Universe [physics]/Ocean Atmosphere [SDU.STU.OC]Sciences of the Universe [physics]/Earth Sciences/Oceanography [SDU.STU.CL]Sciences of the Universe [physics]/Earth Sciences/Climatology |
description |
International audience Documenting the past coevolution of Earth temperatures and of the carbon cycle is of paramount importance for our understanding of climate dynamics. Atmospheric CO2 is well constrained over the last million years through direct measurements in air bubbles from Antarctic ice cores. For older times, many different and sometimes conflicting proxies have been suggested. Here we provide a new methodology to constrain the carbon cycle in the past, based on marine benthic δ13C records. Marine δ13C data are recording a persistent 400 kyr cycle, with an amplitude primarily linked to the total amount of carbon in the ocean, or dissolved inorganic carbon (DIC). By extracting this amplitude from published records, we obtain a new strong constraint on the 100 Myr history of Earth's carbon cycle. The obtained Cenozoic evolution of DIC is in surprisingly in a good agreement with existing reconstructions of pCO2, suggesting that pCO2 is mostly driven by DIC changes over this period. In contrast, we find no strong decreasing trend in DIC between the Cretaceous and the Cenozoic, suggesting that Cretaceous atmospheric pCO2 levels were limited, and high temperatures at this time should be explained by other mechanisms. Alternatively, high Cretaceous atmospheric pCO2 could occur as a consequence of changes in oceanic chemistry but not carbon content. |
author2 |
Modélisation du climat (CLIM) Laboratoire des Sciences du Climat et de l'Environnement Gif-sur-Yvette (LSCE) Institut national des sciences de l'Univers (INSU - CNRS)-Université Paris-Saclay-Centre National de la Recherche Scientifique (CNRS)-Commissariat à l'énergie atomique et aux énergies alternatives (CEA)-Université de Versailles Saint-Quentin-en-Yvelines (UVSQ)-Institut national des sciences de l'Univers (INSU - CNRS)-Université Paris-Saclay-Centre National de la Recherche Scientifique (CNRS)-Commissariat à l'énergie atomique et aux énergies alternatives (CEA)-Université de Versailles Saint-Quentin-en-Yvelines (UVSQ) |
format |
Article in Journal/Newspaper |
author |
Paillard, Didier Donnadieu, Yannick |
author_facet |
Paillard, Didier Donnadieu, Yannick |
author_sort |
Paillard, Didier |
title |
A 100 Myr history of the carbon cycle based on the 400 kyr cycle in marine δ 13 C benthic records |
title_short |
A 100 Myr history of the carbon cycle based on the 400 kyr cycle in marine δ 13 C benthic records |
title_full |
A 100 Myr history of the carbon cycle based on the 400 kyr cycle in marine δ 13 C benthic records |
title_fullStr |
A 100 Myr history of the carbon cycle based on the 400 kyr cycle in marine δ 13 C benthic records |
title_full_unstemmed |
A 100 Myr history of the carbon cycle based on the 400 kyr cycle in marine δ 13 C benthic records |
title_sort |
100 myr history of the carbon cycle based on the 400 kyr cycle in marine δ 13 c benthic records |
publisher |
HAL CCSD |
publishDate |
2014 |
url |
https://hal.archives-ouvertes.fr/hal-02902777 https://hal.archives-ouvertes.fr/hal-02902777/document https://hal.archives-ouvertes.fr/hal-02902777/file/2014PA002693%281%29.pdf https://doi.org/10.1002/2014PA002693 |
geographic |
Antarctic |
geographic_facet |
Antarctic |
genre |
Antarc* Antarctic |
genre_facet |
Antarc* Antarctic |
op_source |
ISSN: 0883-8305 Paleoceanography https://hal.archives-ouvertes.fr/hal-02902777 Paleoceanography, American Geophysical Union, 2014, 29 (12), pp.1249-1255. ⟨10.1002/2014PA002693⟩ |
op_relation |
info:eu-repo/semantics/altIdentifier/doi/10.1002/2014PA002693 hal-02902777 https://hal.archives-ouvertes.fr/hal-02902777 https://hal.archives-ouvertes.fr/hal-02902777/document https://hal.archives-ouvertes.fr/hal-02902777/file/2014PA002693%281%29.pdf doi:10.1002/2014PA002693 |
op_rights |
info:eu-repo/semantics/OpenAccess |
op_doi |
https://doi.org/10.1002/2014PA002693 |
container_title |
Paleoceanography |
container_volume |
29 |
container_issue |
12 |
container_start_page |
1249 |
op_container_end_page |
1255 |
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1766260981363638272 |