Air–snow transfer of nitrate on the East Antarctic Plateau – Part 2: An isotopic model for the interpretation of deep ice-core records
International audience Unraveling the modern budget of reactive nitrogen on the Antarctic Plateau is critical for the interpretation of ice-core records of nitrate. This requires accounting for nitrate recycling processes occurring in near-surface snow and the overlying atmospheric boundary layer. N...
Published in: | Atmospheric Chemistry and Physics |
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Main Authors: | , , , , , |
Other Authors: | , , , , , , , , |
Format: | Article in Journal/Newspaper |
Language: | English |
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HAL CCSD
2015
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Online Access: | https://hal-insu.archives-ouvertes.fr/insu-01320986 https://hal-insu.archives-ouvertes.fr/insu-01320986/document https://hal-insu.archives-ouvertes.fr/insu-01320986/file/ATMOSPHERIC%20CHEMISTRY%20AND%20PHYSICS%20-%20Air-snow%20transfer%20of%20nitrate%20on%20the%20East%20Antarctic%20Plateau.pdf https://doi.org/10.5194/acp-15-12079-2015 |
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[SDU.STU.GL]Sciences of the Universe [physics]/Earth Sciences/Glaciology [SDU.OCEAN]Sciences of the Universe [physics]/Ocean Atmosphere |
spellingShingle |
[SDU.STU.GL]Sciences of the Universe [physics]/Earth Sciences/Glaciology [SDU.OCEAN]Sciences of the Universe [physics]/Ocean Atmosphere Erbland, J Savarino, J Morin, Samuel France, J.L Frey, M.M. King, M.D Air–snow transfer of nitrate on the East Antarctic Plateau – Part 2: An isotopic model for the interpretation of deep ice-core records |
topic_facet |
[SDU.STU.GL]Sciences of the Universe [physics]/Earth Sciences/Glaciology [SDU.OCEAN]Sciences of the Universe [physics]/Ocean Atmosphere |
description |
International audience Unraveling the modern budget of reactive nitrogen on the Antarctic Plateau is critical for the interpretation of ice-core records of nitrate. This requires accounting for nitrate recycling processes occurring in near-surface snow and the overlying atmospheric boundary layer. Not only concentration measurements but also isotopic ratios of nitrogen and oxygen in nitrate provide constraints on the processes at play. However, due to the large number of intertwined chemical and physical phenomena involved, numerical mod-eling is required to test hypotheses in a quantitative manner. Here we introduce the model TRANSITS (TRansfer of Atmospheric Nitrate Stable Isotopes To the Snow), a novel conceptual , multi-layer and one-dimensional model representing the impact of processes operating on nitrate at the air–snow interface on the East Antarctic Plateau, in terms of concentrations (mass fraction) and nitrogen (δ 15 N) and oxygen isotopic composition (17 O excess, 17 O) in nitrate. At the air– snow interface at Dome C (DC; 75 • 06 S, 123 • 19 E), the model reproduces well the values of δ 15 N in atmospheric and surface snow (skin layer) nitrate as well as in the δ 15 N profile in DC snow, including the observed extraordinary high positive values (around +300 ‰) below 2 cm. The model also captures the observed variability in nitrate mass fraction in the snow. While oxygen data are qualitatively reproduced at the air–snow interface at DC and in East Antarctica, the simulated 17 O values underestimate the observed 17 O values by several per mill. This is explained by the simplifications made in the description of the atmospheric cycling and oxidation of NO 2 as well as by our lack of understanding of the NO x chemistry at Dome C. The model reproduces well the sensitivity of δ 15 N, 17 O and the apparent fractiona-tion constants (15 ε app , 17 E app) to the snow accumulation rate. Building on this development, we propose a framework for the interpretation of nitrate records measured from ice cores. ... |
author2 |
Université Grenoble Alpes 2016-2019 (UGA 2016-2019 ) Laboratoire de glaciologie et géophysique de l'environnement (LGGE) Centre National de la Recherche Scientifique (CNRS)-Institut national des sciences de l'Univers (INSU - CNRS)-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 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 recherches météorologiques (CNRM) Institut national des sciences de l'Univers (INSU - CNRS)-Météo France-Centre National de la Recherche Scientifique (CNRS) Royal Holloway University of London (RHUL) British Antarctic Survey (BAS) Natural Environment Research Council (NERC) |
format |
Article in Journal/Newspaper |
author |
Erbland, J Savarino, J Morin, Samuel France, J.L Frey, M.M. King, M.D |
author_facet |
Erbland, J Savarino, J Morin, Samuel France, J.L Frey, M.M. King, M.D |
author_sort |
Erbland, J |
title |
Air–snow transfer of nitrate on the East Antarctic Plateau – Part 2: An isotopic model for the interpretation of deep ice-core records |
title_short |
Air–snow transfer of nitrate on the East Antarctic Plateau – Part 2: An isotopic model for the interpretation of deep ice-core records |
title_full |
Air–snow transfer of nitrate on the East Antarctic Plateau – Part 2: An isotopic model for the interpretation of deep ice-core records |
title_fullStr |
Air–snow transfer of nitrate on the East Antarctic Plateau – Part 2: An isotopic model for the interpretation of deep ice-core records |
title_full_unstemmed |
Air–snow transfer of nitrate on the East Antarctic Plateau – Part 2: An isotopic model for the interpretation of deep ice-core records |
title_sort |
air–snow transfer of nitrate on the east antarctic plateau – part 2: an isotopic model for the interpretation of deep ice-core records |
publisher |
HAL CCSD |
publishDate |
2015 |
url |
https://hal-insu.archives-ouvertes.fr/insu-01320986 https://hal-insu.archives-ouvertes.fr/insu-01320986/document https://hal-insu.archives-ouvertes.fr/insu-01320986/file/ATMOSPHERIC%20CHEMISTRY%20AND%20PHYSICS%20-%20Air-snow%20transfer%20of%20nitrate%20on%20the%20East%20Antarctic%20Plateau.pdf https://doi.org/10.5194/acp-15-12079-2015 |
geographic |
Antarctic East Antarctica The Antarctic |
geographic_facet |
Antarctic East Antarctica The Antarctic |
genre |
Antarc* Antarctic Antarctica East Antarctica ice core |
genre_facet |
Antarc* Antarctic Antarctica East Antarctica ice core |
op_source |
ISSN: 1680-7367 EISSN: 1680-7375 Atmospheric Chemistry and Physics Discussions https://hal-insu.archives-ouvertes.fr/insu-01320986 Atmospheric Chemistry and Physics Discussions, European Geosciences Union, 2015, pp.12079-12113. ⟨10.5194/acp-15-12079-2015⟩ |
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info:eu-repo/semantics/altIdentifier/doi/10.5194/acp-15-12079-2015 insu-01320986 https://hal-insu.archives-ouvertes.fr/insu-01320986 https://hal-insu.archives-ouvertes.fr/insu-01320986/document https://hal-insu.archives-ouvertes.fr/insu-01320986/file/ATMOSPHERIC%20CHEMISTRY%20AND%20PHYSICS%20-%20Air-snow%20transfer%20of%20nitrate%20on%20the%20East%20Antarctic%20Plateau.pdf doi:10.5194/acp-15-12079-2015 |
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info:eu-repo/semantics/OpenAccess |
op_doi |
https://doi.org/10.5194/acp-15-12079-2015 |
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Atmospheric Chemistry and Physics |
container_volume |
15 |
container_issue |
20 |
container_start_page |
12079 |
op_container_end_page |
12113 |
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spelling |
ftccsdartic:oai:HAL:insu-01320986v1 2023-05-15T13:42:37+02:00 Air–snow transfer of nitrate on the East Antarctic Plateau – Part 2: An isotopic model for the interpretation of deep ice-core records Erbland, J Savarino, J Morin, Samuel France, J.L Frey, M.M. King, M.D Université Grenoble Alpes 2016-2019 (UGA 2016-2019 ) Laboratoire de glaciologie et géophysique de l'environnement (LGGE) Centre National de la Recherche Scientifique (CNRS)-Institut national des sciences de l'Univers (INSU - CNRS)-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 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 recherches météorologiques (CNRM) Institut national des sciences de l'Univers (INSU - CNRS)-Météo France-Centre National de la Recherche Scientifique (CNRS) Royal Holloway University of London (RHUL) British Antarctic Survey (BAS) Natural Environment Research Council (NERC) 2015 https://hal-insu.archives-ouvertes.fr/insu-01320986 https://hal-insu.archives-ouvertes.fr/insu-01320986/document https://hal-insu.archives-ouvertes.fr/insu-01320986/file/ATMOSPHERIC%20CHEMISTRY%20AND%20PHYSICS%20-%20Air-snow%20transfer%20of%20nitrate%20on%20the%20East%20Antarctic%20Plateau.pdf https://doi.org/10.5194/acp-15-12079-2015 en eng HAL CCSD European Geosciences Union info:eu-repo/semantics/altIdentifier/doi/10.5194/acp-15-12079-2015 insu-01320986 https://hal-insu.archives-ouvertes.fr/insu-01320986 https://hal-insu.archives-ouvertes.fr/insu-01320986/document https://hal-insu.archives-ouvertes.fr/insu-01320986/file/ATMOSPHERIC%20CHEMISTRY%20AND%20PHYSICS%20-%20Air-snow%20transfer%20of%20nitrate%20on%20the%20East%20Antarctic%20Plateau.pdf doi:10.5194/acp-15-12079-2015 info:eu-repo/semantics/OpenAccess ISSN: 1680-7367 EISSN: 1680-7375 Atmospheric Chemistry and Physics Discussions https://hal-insu.archives-ouvertes.fr/insu-01320986 Atmospheric Chemistry and Physics Discussions, European Geosciences Union, 2015, pp.12079-12113. ⟨10.5194/acp-15-12079-2015⟩ [SDU.STU.GL]Sciences of the Universe [physics]/Earth Sciences/Glaciology [SDU.OCEAN]Sciences of the Universe [physics]/Ocean Atmosphere info:eu-repo/semantics/article Journal articles 2015 ftccsdartic https://doi.org/10.5194/acp-15-12079-2015 2021-10-24T10:22:07Z International audience Unraveling the modern budget of reactive nitrogen on the Antarctic Plateau is critical for the interpretation of ice-core records of nitrate. This requires accounting for nitrate recycling processes occurring in near-surface snow and the overlying atmospheric boundary layer. Not only concentration measurements but also isotopic ratios of nitrogen and oxygen in nitrate provide constraints on the processes at play. However, due to the large number of intertwined chemical and physical phenomena involved, numerical mod-eling is required to test hypotheses in a quantitative manner. Here we introduce the model TRANSITS (TRansfer of Atmospheric Nitrate Stable Isotopes To the Snow), a novel conceptual , multi-layer and one-dimensional model representing the impact of processes operating on nitrate at the air–snow interface on the East Antarctic Plateau, in terms of concentrations (mass fraction) and nitrogen (δ 15 N) and oxygen isotopic composition (17 O excess, 17 O) in nitrate. At the air– snow interface at Dome C (DC; 75 • 06 S, 123 • 19 E), the model reproduces well the values of δ 15 N in atmospheric and surface snow (skin layer) nitrate as well as in the δ 15 N profile in DC snow, including the observed extraordinary high positive values (around +300 ‰) below 2 cm. The model also captures the observed variability in nitrate mass fraction in the snow. While oxygen data are qualitatively reproduced at the air–snow interface at DC and in East Antarctica, the simulated 17 O values underestimate the observed 17 O values by several per mill. This is explained by the simplifications made in the description of the atmospheric cycling and oxidation of NO 2 as well as by our lack of understanding of the NO x chemistry at Dome C. The model reproduces well the sensitivity of δ 15 N, 17 O and the apparent fractiona-tion constants (15 ε app , 17 E app) to the snow accumulation rate. Building on this development, we propose a framework for the interpretation of nitrate records measured from ice cores. ... Article in Journal/Newspaper Antarc* Antarctic Antarctica East Antarctica ice core Archive ouverte HAL (Hyper Article en Ligne, CCSD - Centre pour la Communication Scientifique Directe) Antarctic East Antarctica The Antarctic Atmospheric Chemistry and Physics 15 20 12079 12113 |