Firn-air δ15N in modern polar sites and glacial–interglacial ice: a model-data mismatch during glacial periods in Antarctica?
International audience The phase lag between atmospheric composition (air bubbles) and temperature (water isotopes) can be quantified from ice cores provided that the age difference between entrapped air and the surrounding air can be correctly estimated. This difference depends on the lock-in depth...
Published in: | Quaternary Science Reviews |
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Main Authors: | , , , , , , , , , , , , , , , |
Other Authors: | , , , , , , , , , , , , , , , , , , , , , |
Format: | Article in Journal/Newspaper |
Language: | English |
Published: |
HAL CCSD
2006
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Subjects: | |
Online Access: | https://insu.hal.science/insu-00375513 https://doi.org/10.1016/j.quascirev.2005.06.007 |
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ftsorbonneuniv:oai:HAL:insu-00375513v1 |
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record_format |
openpolar |
institution |
Open Polar |
collection |
HAL Sorbonne Université |
op_collection_id |
ftsorbonneuniv |
language |
English |
topic |
[SDU.STU.GL]Sciences of the Universe [physics]/Earth Sciences/Glaciology |
spellingShingle |
[SDU.STU.GL]Sciences of the Universe [physics]/Earth Sciences/Glaciology Landais, Amaelle Barnola, Jean-Marc Kawamura, Kenji Caillon, Nicolas Delmotte, M. van Ommen, T. Dreyfus, G. Jouzel, Jean Masson-Delmotte, Valérie Minster, B. Freitag, J. Leuenberger, M. Schwander, Jakob Huber, C. Etheridge, D. M. Morgan, Vin Firn-air δ15N in modern polar sites and glacial–interglacial ice: a model-data mismatch during glacial periods in Antarctica? |
topic_facet |
[SDU.STU.GL]Sciences of the Universe [physics]/Earth Sciences/Glaciology |
description |
International audience The phase lag between atmospheric composition (air bubbles) and temperature (water isotopes) can be quantified from ice cores provided that the age difference between entrapped air and the surrounding air can be correctly estimated. This difference depends on the lock-in depth (LID), when air no longer mixes with the atmosphere. The LID can be estimated from firnification models or from the air isotopic composition (δ15N and δ40Ar). Both methods give consistent results for Greenland and one coastal site in Antarctica (Byrd). New firn measurements in Greenland (NorthGRIP) and Antarctica (Berkner Island, BAS depot, Dome C) confirm that firnification models correctly reproduce the present LID over a large range of surface conditions. However, a systematic mismatch is observed for the Last Glacial Maximum (LGM) in East Antarctic sites (Vostok, Dome C, Dome F) questioning the model's validity. Here we use new δ15N measurements from two coastal Antarctic sites (Kohnen Station and Law Dome) providing depth estimates again distinct from firnification model calculations. We show that this discrepancy can be resolved by revising the estimate of past accumulation rates. δ15N measurements can therefore help to constrain past accumulation rate and improve ice core dating. |
author2 |
Institute of Earth Sciences Hebrew University 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) Glaces et Continents, Climats et Isotopes Stables (GLACCIOS) 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)) 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) Center for Atmospheric and Oceanic Studies Sendai Tohoku University Sendai ICOS-RAMCES (ICOS-RAMCES) Antarctic Climate and Ecosystems Cooperative Research Centre (ACE-CRC) Australian Antarctic Division (AAD) Australian Government, Department of the Environment and Energy Abteilung Klinische Sozialmedizin, Berufs- und Umweltdermatologie Universität Heidelberg Heidelberg = Heidelberg University Physics Institute Universität Bern / University of Bern (UNIBE) CSIRO Marine and Atmospheric Research European projects FIRETRACC and CRYOSTAT |
format |
Article in Journal/Newspaper |
author |
Landais, Amaelle Barnola, Jean-Marc Kawamura, Kenji Caillon, Nicolas Delmotte, M. van Ommen, T. Dreyfus, G. Jouzel, Jean Masson-Delmotte, Valérie Minster, B. Freitag, J. Leuenberger, M. Schwander, Jakob Huber, C. Etheridge, D. M. Morgan, Vin |
author_facet |
Landais, Amaelle Barnola, Jean-Marc Kawamura, Kenji Caillon, Nicolas Delmotte, M. van Ommen, T. Dreyfus, G. Jouzel, Jean Masson-Delmotte, Valérie Minster, B. Freitag, J. Leuenberger, M. Schwander, Jakob Huber, C. Etheridge, D. M. Morgan, Vin |
author_sort |
Landais, Amaelle |
title |
Firn-air δ15N in modern polar sites and glacial–interglacial ice: a model-data mismatch during glacial periods in Antarctica? |
title_short |
Firn-air δ15N in modern polar sites and glacial–interglacial ice: a model-data mismatch during glacial periods in Antarctica? |
title_full |
Firn-air δ15N in modern polar sites and glacial–interglacial ice: a model-data mismatch during glacial periods in Antarctica? |
title_fullStr |
Firn-air δ15N in modern polar sites and glacial–interglacial ice: a model-data mismatch during glacial periods in Antarctica? |
title_full_unstemmed |
Firn-air δ15N in modern polar sites and glacial–interglacial ice: a model-data mismatch during glacial periods in Antarctica? |
title_sort |
firn-air δ15n in modern polar sites and glacial–interglacial ice: a model-data mismatch during glacial periods in antarctica? |
publisher |
HAL CCSD |
publishDate |
2006 |
url |
https://insu.hal.science/insu-00375513 https://doi.org/10.1016/j.quascirev.2005.06.007 |
long_lat |
ENVELOPE(112.833,112.833,-66.733,-66.733) ENVELOPE(0.000,0.000,-75.000,-75.000) ENVELOPE(0.000,0.000,-75.000,-75.000) ENVELOPE(-48.117,-48.117,-79.333,-79.333) ENVELOPE(39.700,39.700,-77.317,-77.317) |
geographic |
Antarctic Greenland Byrd Law Dome Kohnen Kohnen Station Berkner Island Dome F |
geographic_facet |
Antarctic Greenland Byrd Law Dome Kohnen Kohnen Station Berkner Island Dome F |
genre |
Antarc* Antarctic Antarctica Berkner Island Greenland ice core |
genre_facet |
Antarc* Antarctic Antarctica Berkner Island Greenland ice core |
op_source |
ISSN: 0277-3791 EISSN: 1873-457X Quaternary Science Reviews https://insu.hal.science/insu-00375513 Quaternary Science Reviews, 2006, 25 (1-2), pp.49 à 62. ⟨10.1016/j.quascirev.2005.06.007⟩ |
op_relation |
info:eu-repo/semantics/altIdentifier/doi/10.1016/j.quascirev.2005.06.007 insu-00375513 https://insu.hal.science/insu-00375513 doi:10.1016/j.quascirev.2005.06.007 |
op_doi |
https://doi.org/10.1016/j.quascirev.2005.06.007 |
container_title |
Quaternary Science Reviews |
container_volume |
25 |
container_issue |
1-2 |
container_start_page |
49 |
op_container_end_page |
62 |
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1801369138452496384 |
spelling |
ftsorbonneuniv:oai:HAL:insu-00375513v1 2024-06-09T07:40:44+00:00 Firn-air δ15N in modern polar sites and glacial–interglacial ice: a model-data mismatch during glacial periods in Antarctica? Landais, Amaelle Barnola, Jean-Marc Kawamura, Kenji Caillon, Nicolas Delmotte, M. van Ommen, T. Dreyfus, G. Jouzel, Jean Masson-Delmotte, Valérie Minster, B. Freitag, J. Leuenberger, M. Schwander, Jakob Huber, C. Etheridge, D. M. Morgan, Vin Institute of Earth Sciences Hebrew University 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) Glaces et Continents, Climats et Isotopes Stables (GLACCIOS) 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)) 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) Center for Atmospheric and Oceanic Studies Sendai Tohoku University Sendai ICOS-RAMCES (ICOS-RAMCES) Antarctic Climate and Ecosystems Cooperative Research Centre (ACE-CRC) Australian Antarctic Division (AAD) Australian Government, Department of the Environment and Energy Abteilung Klinische Sozialmedizin, Berufs- und Umweltdermatologie Universität Heidelberg Heidelberg = Heidelberg University Physics Institute Universität Bern / University of Bern (UNIBE) CSIRO Marine and Atmospheric Research European projects FIRETRACC and CRYOSTAT 2006 https://insu.hal.science/insu-00375513 https://doi.org/10.1016/j.quascirev.2005.06.007 en eng HAL CCSD Elsevier info:eu-repo/semantics/altIdentifier/doi/10.1016/j.quascirev.2005.06.007 insu-00375513 https://insu.hal.science/insu-00375513 doi:10.1016/j.quascirev.2005.06.007 ISSN: 0277-3791 EISSN: 1873-457X Quaternary Science Reviews https://insu.hal.science/insu-00375513 Quaternary Science Reviews, 2006, 25 (1-2), pp.49 à 62. ⟨10.1016/j.quascirev.2005.06.007⟩ [SDU.STU.GL]Sciences of the Universe [physics]/Earth Sciences/Glaciology info:eu-repo/semantics/article Journal articles 2006 ftsorbonneuniv https://doi.org/10.1016/j.quascirev.2005.06.007 2024-05-16T23:54:03Z International audience The phase lag between atmospheric composition (air bubbles) and temperature (water isotopes) can be quantified from ice cores provided that the age difference between entrapped air and the surrounding air can be correctly estimated. This difference depends on the lock-in depth (LID), when air no longer mixes with the atmosphere. The LID can be estimated from firnification models or from the air isotopic composition (δ15N and δ40Ar). Both methods give consistent results for Greenland and one coastal site in Antarctica (Byrd). New firn measurements in Greenland (NorthGRIP) and Antarctica (Berkner Island, BAS depot, Dome C) confirm that firnification models correctly reproduce the present LID over a large range of surface conditions. However, a systematic mismatch is observed for the Last Glacial Maximum (LGM) in East Antarctic sites (Vostok, Dome C, Dome F) questioning the model's validity. Here we use new δ15N measurements from two coastal Antarctic sites (Kohnen Station and Law Dome) providing depth estimates again distinct from firnification model calculations. We show that this discrepancy can be resolved by revising the estimate of past accumulation rates. δ15N measurements can therefore help to constrain past accumulation rate and improve ice core dating. Article in Journal/Newspaper Antarc* Antarctic Antarctica Berkner Island Greenland ice core HAL Sorbonne Université Antarctic Greenland Byrd Law Dome ENVELOPE(112.833,112.833,-66.733,-66.733) Kohnen ENVELOPE(0.000,0.000,-75.000,-75.000) Kohnen Station ENVELOPE(0.000,0.000,-75.000,-75.000) Berkner Island ENVELOPE(-48.117,-48.117,-79.333,-79.333) Dome F ENVELOPE(39.700,39.700,-77.317,-77.317) Quaternary Science Reviews 25 1-2 49 62 |