Isotopic composition of atmospheric O2 in ice linked with deglaciation and global primary productivity

International audience In photosynthesis, O2 is continuously formed from H2O and released to the atmosphere. Coupled with respiration, photosynthesis forms a loop in which oxygen isotopes are exchanged between O2 and H2O. During the ice ages, sea water was enriched in δ18O by ∼1.3‰ relative to the p...

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Published in:Nature
Main Authors: Bender, M., Labeyrie, L., Raynaud, D., Lorius, C.
Other Authors: Centre des Faibles Radioactivités, Commissariat à l'énergie atomique et aux énergies alternatives (CEA)-Centre National de la Recherche Scientifique (CNRS), Laboratoire de glaciologie et géophysique de l'environnement (LGGE), Observatoire des Sciences de l'Univers de Grenoble (OSUG), Université Joseph Fourier - Grenoble 1 (UJF)-Institut polytechnique de Grenoble - Grenoble Institute of Technology (Grenoble INP )-Institut national des sciences de l'Univers (INSU - CNRS)-Institut national de recherche en sciences et technologies pour l'environnement et l'agriculture (IRSTEA)-Université Savoie Mont Blanc (USMB Université de Savoie Université de Chambéry )-Centre National de la Recherche Scientifique (CNRS)-Université Joseph Fourier - Grenoble 1 (UJF)-Institut polytechnique de Grenoble - Grenoble Institute of Technology (Grenoble INP )-Institut national des sciences de l'Univers (INSU - CNRS)-Institut national de recherche en sciences et technologies pour l'environnement et l'agriculture (IRSTEA)-Université Savoie Mont Blanc (USMB Université de Savoie Université de Chambéry )-Centre National de la Recherche Scientifique (CNRS)-Centre National de la Recherche Scientifique (CNRS)
Format: Article in Journal/Newspaper
Language:English
Published: HAL CCSD 1985
Subjects:
Online Access:https://hal.science/hal-03519084
https://doi.org/10.1038/318349a0
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spelling ftunigrenoble:oai:HAL:hal-03519084v1 2024-05-12T07:55:44+00:00 Isotopic composition of atmospheric O2 in ice linked with deglaciation and global primary productivity Bender, M. Labeyrie, L. Raynaud, D. Lorius, C. Centre des Faibles Radioactivités Commissariat à l'énergie atomique et aux énergies alternatives (CEA)-Centre National de la Recherche Scientifique (CNRS) Laboratoire de glaciologie et géophysique de l'environnement (LGGE) Observatoire des Sciences de l'Univers de Grenoble (OSUG) Université Joseph Fourier - Grenoble 1 (UJF)-Institut polytechnique de Grenoble - Grenoble Institute of Technology (Grenoble INP )-Institut national des sciences de l'Univers (INSU - CNRS)-Institut national de recherche en sciences et technologies pour l'environnement et l'agriculture (IRSTEA)-Université Savoie Mont Blanc (USMB Université de Savoie Université de Chambéry )-Centre National de la Recherche Scientifique (CNRS)-Université Joseph Fourier - Grenoble 1 (UJF)-Institut polytechnique de Grenoble - Grenoble Institute of Technology (Grenoble INP )-Institut national des sciences de l'Univers (INSU - CNRS)-Institut national de recherche en sciences et technologies pour l'environnement et l'agriculture (IRSTEA)-Université Savoie Mont Blanc (USMB Université de Savoie Université de Chambéry )-Centre National de la Recherche Scientifique (CNRS)-Centre National de la Recherche Scientifique (CNRS) 1985-11 https://hal.science/hal-03519084 https://doi.org/10.1038/318349a0 en eng HAL CCSD Nature Publishing Group info:eu-repo/semantics/altIdentifier/doi/10.1038/318349a0 hal-03519084 https://hal.science/hal-03519084 doi:10.1038/318349a0 ISSN: 0028-0836 EISSN: 1476-4687 Nature https://hal.science/hal-03519084 Nature, 1985, 318 (6044), pp.349-352. ⟨10.1038/318349a0⟩ [SDU.OCEAN]Sciences of the Universe [physics]/Ocean Atmosphere [SDU.ENVI]Sciences of the Universe [physics]/Continental interfaces environment info:eu-repo/semantics/article Journal articles 1985 ftunigrenoble https://doi.org/10.1038/318349a0 2024-04-18T03:10:05Z International audience In photosynthesis, O2 is continuously formed from H2O and released to the atmosphere. Coupled with respiration, photosynthesis forms a loop in which oxygen isotopes are exchanged between O2 and H2O. During the ice ages, sea water was enriched in δ18O by ∼1.3‰ relative to the present value1. Continental waters in the areas of high primary productivity exchange rapidly with the oceans. They probably presented a similar isotopic enrichment. Since the δ18O of glacial water was greater than at present, we would expect that the δ18O of atmospheric O2 was also greater than at present. Fireman and Norris2 and Horibe et al.3 have measured the δ18O of O2 from the glacial atmosphere by analysing trapped gases in ice cores. However, their data are either too few or too imprecise to demonstrate whether δ18O of atmospheric O2 has, in fact, varied. Here we present data on the changes, during the past 22 kyr approximately, in the δ18O of atmospheric O2 trapped in the ice core Dome C (East Antarctica, 74° S, 124° E). The results show that the isotopic composition of atmospheric O2 has indeed varied along with that of sea water, and that the δ18O (O2) record offers a tool for studying several important aspects of the global cycles of O2 and H2O in relation to the climate. Article in Journal/Newspaper Antarc* Antarctica East Antarctica ice core Université Grenoble Alpes: HAL East Antarctica Nature 318 6044 349 352
institution Open Polar
collection Université Grenoble Alpes: HAL
op_collection_id ftunigrenoble
language English
topic [SDU.OCEAN]Sciences of the Universe [physics]/Ocean
Atmosphere
[SDU.ENVI]Sciences of the Universe [physics]/Continental interfaces
environment
spellingShingle [SDU.OCEAN]Sciences of the Universe [physics]/Ocean
Atmosphere
[SDU.ENVI]Sciences of the Universe [physics]/Continental interfaces
environment
Bender, M.
Labeyrie, L.
Raynaud, D.
Lorius, C.
Isotopic composition of atmospheric O2 in ice linked with deglaciation and global primary productivity
topic_facet [SDU.OCEAN]Sciences of the Universe [physics]/Ocean
Atmosphere
[SDU.ENVI]Sciences of the Universe [physics]/Continental interfaces
environment
description International audience In photosynthesis, O2 is continuously formed from H2O and released to the atmosphere. Coupled with respiration, photosynthesis forms a loop in which oxygen isotopes are exchanged between O2 and H2O. During the ice ages, sea water was enriched in δ18O by ∼1.3‰ relative to the present value1. Continental waters in the areas of high primary productivity exchange rapidly with the oceans. They probably presented a similar isotopic enrichment. Since the δ18O of glacial water was greater than at present, we would expect that the δ18O of atmospheric O2 was also greater than at present. Fireman and Norris2 and Horibe et al.3 have measured the δ18O of O2 from the glacial atmosphere by analysing trapped gases in ice cores. However, their data are either too few or too imprecise to demonstrate whether δ18O of atmospheric O2 has, in fact, varied. Here we present data on the changes, during the past 22 kyr approximately, in the δ18O of atmospheric O2 trapped in the ice core Dome C (East Antarctica, 74° S, 124° E). The results show that the isotopic composition of atmospheric O2 has indeed varied along with that of sea water, and that the δ18O (O2) record offers a tool for studying several important aspects of the global cycles of O2 and H2O in relation to the climate.
author2 Centre des Faibles Radioactivités
Commissariat à l'énergie atomique et aux énergies alternatives (CEA)-Centre National de la Recherche Scientifique (CNRS)
Laboratoire de glaciologie et géophysique de l'environnement (LGGE)
Observatoire des Sciences de l'Univers de Grenoble (OSUG)
Université Joseph Fourier - Grenoble 1 (UJF)-Institut polytechnique de Grenoble - Grenoble Institute of Technology (Grenoble INP )-Institut national des sciences de l'Univers (INSU - CNRS)-Institut national de recherche en sciences et technologies pour l'environnement et l'agriculture (IRSTEA)-Université Savoie Mont Blanc (USMB Université de Savoie Université de Chambéry )-Centre National de la Recherche Scientifique (CNRS)-Université Joseph Fourier - Grenoble 1 (UJF)-Institut polytechnique de Grenoble - Grenoble Institute of Technology (Grenoble INP )-Institut national des sciences de l'Univers (INSU - CNRS)-Institut national de recherche en sciences et technologies pour l'environnement et l'agriculture (IRSTEA)-Université Savoie Mont Blanc (USMB Université de Savoie Université de Chambéry )-Centre National de la Recherche Scientifique (CNRS)-Centre National de la Recherche Scientifique (CNRS)
format Article in Journal/Newspaper
author Bender, M.
Labeyrie, L.
Raynaud, D.
Lorius, C.
author_facet Bender, M.
Labeyrie, L.
Raynaud, D.
Lorius, C.
author_sort Bender, M.
title Isotopic composition of atmospheric O2 in ice linked with deglaciation and global primary productivity
title_short Isotopic composition of atmospheric O2 in ice linked with deglaciation and global primary productivity
title_full Isotopic composition of atmospheric O2 in ice linked with deglaciation and global primary productivity
title_fullStr Isotopic composition of atmospheric O2 in ice linked with deglaciation and global primary productivity
title_full_unstemmed Isotopic composition of atmospheric O2 in ice linked with deglaciation and global primary productivity
title_sort isotopic composition of atmospheric o2 in ice linked with deglaciation and global primary productivity
publisher HAL CCSD
publishDate 1985
url https://hal.science/hal-03519084
https://doi.org/10.1038/318349a0
geographic East Antarctica
geographic_facet East Antarctica
genre Antarc*
Antarctica
East Antarctica
ice core
genre_facet Antarc*
Antarctica
East Antarctica
ice core
op_source ISSN: 0028-0836
EISSN: 1476-4687
Nature
https://hal.science/hal-03519084
Nature, 1985, 318 (6044), pp.349-352. ⟨10.1038/318349a0⟩
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container_volume 318
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