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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Format: | Article in Journal/Newspaper |
Language: | English |
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Online Access: | https://hal.science/hal-02902777 https://hal.science/hal-02902777/document https://hal.science/hal-02902777/file/2014PA002693%281%29.pdf https://doi.org/10.1002/2014PA002693 |
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ftceafr:oai:HAL:hal-02902777v1 2024-06-09T07:40:30+00:00 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) 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)-Direction de Recherche Fondamentale (CEA) (DRF (CEA)) Commissariat à l'énergie atomique et aux énergies alternatives (CEA)-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)-Direction de Recherche Fondamentale (CEA) (DRF (CEA)) Commissariat à l'énergie atomique et aux énergies alternatives (CEA)-Commissariat à l'énergie atomique et aux énergies alternatives (CEA) 2014 https://hal.science/hal-02902777 https://hal.science/hal-02902777/document https://hal.science/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.science/hal-02902777 https://hal.science/hal-02902777/document https://hal.science/hal-02902777/file/2014PA002693%281%29.pdf doi:10.1002/2014PA002693 info:eu-repo/semantics/OpenAccess ISSN: 0883-8305 Paleoceanography https://hal.science/hal-02902777 Paleoceanography, 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 ftceafr https://doi.org/10.1002/2014PA002693 2024-05-16T14:15:40Z 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 HAL-CEA (Commissariat à l'énergie atomique et aux énergies alternatives) Antarctic Paleoceanography 29 12 1249 1255 |
institution |
Open Polar |
collection |
HAL-CEA (Commissariat à l'énergie atomique et aux énergies alternatives) |
op_collection_id |
ftceafr |
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) 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)-Direction de Recherche Fondamentale (CEA) (DRF (CEA)) Commissariat à l'énergie atomique et aux énergies alternatives (CEA)-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)-Direction de Recherche Fondamentale (CEA) (DRF (CEA)) Commissariat à l'énergie atomique et aux énergies alternatives (CEA)-Commissariat à l'énergie atomique et aux énergies alternatives (CEA) |
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.science/hal-02902777 https://hal.science/hal-02902777/document https://hal.science/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.science/hal-02902777 Paleoceanography, 2014, 29 (12), pp.1249-1255. ⟨10.1002/2014PA002693⟩ |
op_relation |
info:eu-repo/semantics/altIdentifier/doi/10.1002/2014PA002693 hal-02902777 https://hal.science/hal-02902777 https://hal.science/hal-02902777/document https://hal.science/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 |
_version_ |
1801383885733363712 |