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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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⟩ |
op_relation |
info:eu-repo/semantics/altIdentifier/doi/10.1038/318349a0 hal-03519084 https://hal.science/hal-03519084 doi:10.1038/318349a0 |
op_doi |
https://doi.org/10.1038/318349a0 |
container_title |
Nature |
container_volume |
318 |
container_issue |
6044 |
container_start_page |
349 |
op_container_end_page |
352 |
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1798835578746175488 |