Deposition, recycling, and archival of nitrate stable isotopes between the air–snow interface: comparison between Dronning Maud Land and Dome C, Antarctica
International audience Abstract. The nitrogen stable isotopic composition in nitrate (δ15N-NO3-) measured in ice cores from low-snow-accumulation regions in East Antarctica has the potential to provide constraints on past ultraviolet (UV) radiation and thereby total column ozone (TCO) due to the sen...
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
2020
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Online Access: | https://hal.science/hal-03402284 https://hal.science/hal-03402284/document https://hal.science/hal-03402284/file/Winton-2020.pdf https://doi.org/10.5194/acp-20-5861-2020 |
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Institut national des sciences de l'Univers: HAL-INSU |
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English |
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[SDU.OCEAN]Sciences of the Universe [physics]/Ocean Atmosphere [SDU.STU.GL]Sciences of the Universe [physics]/Earth Sciences/Glaciology [SDU.STU.GC]Sciences of the Universe [physics]/Earth Sciences/Geochemistry |
spellingShingle |
[SDU.OCEAN]Sciences of the Universe [physics]/Ocean Atmosphere [SDU.STU.GL]Sciences of the Universe [physics]/Earth Sciences/Glaciology [SDU.STU.GC]Sciences of the Universe [physics]/Earth Sciences/Geochemistry Winton, V. Holly L., Holly L Ming, Alison Caillon, Nicolas Hauge, Lisa Jones, Anna, E Savarino, Joel Yang, Xin Frey, Markus, M Deposition, recycling, and archival of nitrate stable isotopes between the air–snow interface: comparison between Dronning Maud Land and Dome C, Antarctica |
topic_facet |
[SDU.OCEAN]Sciences of the Universe [physics]/Ocean Atmosphere [SDU.STU.GL]Sciences of the Universe [physics]/Earth Sciences/Glaciology [SDU.STU.GC]Sciences of the Universe [physics]/Earth Sciences/Geochemistry |
description |
International audience Abstract. The nitrogen stable isotopic composition in nitrate (δ15N-NO3-) measured in ice cores from low-snow-accumulation regions in East Antarctica has the potential to provide constraints on past ultraviolet (UV) radiation and thereby total column ozone (TCO) due to the sensitivity of nitrate (NO3-) photolysis to UV radiation. However, understanding the transfer of reactive nitrogen at the air–snow interface in polar regions is paramount for the interpretation of ice core records of δ15N-NO3- and NO3- mass concentrations. As NO3- undergoes a number of post-depositional processes before it is archived in ice cores, site-specific observations of δ15N-NO3- and air–snow transfer modelling are necessary to understand and quantify the complex photochemical processes at play. As part of the Isotopic Constraints on Past Ozone Layer Thickness in Polar Ice (ISOL-ICE) project, we report new measurements of NO3- mass concentration and δ15N-NO3- in the atmosphere, skin layer (operationally defined as the top 5 mm of the snowpack), and snow pit depth profiles at Kohnen Station, Dronning Maud Land (DML), Antarctica. We compare the results to previous studies and new data, presented here, from Dome C on the East Antarctic Plateau. Additionally, we apply the conceptual 1D model of TRansfer of Atmospheric Nitrate Stable Isotopes To the Snow (TRANSITS) to assess the impact of NO3- recycling on δ15N-NO3- and NO3- mass concentrations archived in snow and firn. We find clear evidence of NO3- photolysis at DML and confirmation of previous theoretical, field, and laboratory studies that UV photolysis is driving NO3- recycling and redistribution at DML. Firstly, strong denitrification of the snowpack is observed through the δ15N-NO3- signature, which evolves from the enriched snowpack (−3 ‰ to 100 ‰), to the skin layer (−20 ‰ to 3 ‰), to the depleted atmosphere (−50 ‰ to −20 ‰), corresponding to mass loss of NO3- from the snowpack. Based on the TRANSITS model, we find that NO3- is recycled two times, on ... |
author2 |
Institut des Géosciences de l’Environnement (IGE) Institut de Recherche pour le Développement (IRD)-Institut national des sciences de l'Univers (INSU - CNRS)-Centre National de la Recherche Scientifique (CNRS)-Université Grenoble Alpes (UGA)-Institut polytechnique de Grenoble - Grenoble Institute of Technology (Grenoble INP ) Université Grenoble Alpes (UGA) ANR-16-CE01-0011,EAIIST,Projet International d'exploration de la calotte polaire de l'Antarctique de l'Est(2016) |
format |
Article in Journal/Newspaper |
author |
Winton, V. Holly L., Holly L Ming, Alison Caillon, Nicolas Hauge, Lisa Jones, Anna, E Savarino, Joel Yang, Xin Frey, Markus, M |
author_facet |
Winton, V. Holly L., Holly L Ming, Alison Caillon, Nicolas Hauge, Lisa Jones, Anna, E Savarino, Joel Yang, Xin Frey, Markus, M |
author_sort |
Winton, V. Holly L., Holly L |
title |
Deposition, recycling, and archival of nitrate stable isotopes between the air–snow interface: comparison between Dronning Maud Land and Dome C, Antarctica |
title_short |
Deposition, recycling, and archival of nitrate stable isotopes between the air–snow interface: comparison between Dronning Maud Land and Dome C, Antarctica |
title_full |
Deposition, recycling, and archival of nitrate stable isotopes between the air–snow interface: comparison between Dronning Maud Land and Dome C, Antarctica |
title_fullStr |
Deposition, recycling, and archival of nitrate stable isotopes between the air–snow interface: comparison between Dronning Maud Land and Dome C, Antarctica |
title_full_unstemmed |
Deposition, recycling, and archival of nitrate stable isotopes between the air–snow interface: comparison between Dronning Maud Land and Dome C, Antarctica |
title_sort |
deposition, recycling, and archival of nitrate stable isotopes between the air–snow interface: comparison between dronning maud land and dome c, antarctica |
publisher |
HAL CCSD |
publishDate |
2020 |
url |
https://hal.science/hal-03402284 https://hal.science/hal-03402284/document https://hal.science/hal-03402284/file/Winton-2020.pdf https://doi.org/10.5194/acp-20-5861-2020 |
genre |
Antarc* Antarctic Antarctica DML Dronning Maud Land East Antarctica ice core |
genre_facet |
Antarc* Antarctic Antarctica DML Dronning Maud Land East Antarctica ice core |
op_source |
ISSN: 1680-7316 EISSN: 1680-7324 Atmospheric Chemistry and Physics https://hal.science/hal-03402284 Atmospheric Chemistry and Physics, 2020, 20 (9), pp.5861 - 5885. ⟨10.5194/acp-20-5861-2020⟩ |
op_relation |
info:eu-repo/semantics/altIdentifier/doi/10.5194/acp-20-5861-2020 hal-03402284 https://hal.science/hal-03402284 https://hal.science/hal-03402284/document https://hal.science/hal-03402284/file/Winton-2020.pdf doi:10.5194/acp-20-5861-2020 |
op_rights |
info:eu-repo/semantics/OpenAccess |
op_doi |
https://doi.org/10.5194/acp-20-5861-2020 |
container_title |
Atmospheric Chemistry and Physics |
container_volume |
20 |
container_issue |
9 |
container_start_page |
5861 |
op_container_end_page |
5885 |
_version_ |
1797572612815060992 |
spelling |
ftinsu:oai:HAL:hal-03402284v1 2024-04-28T08:00:20+00:00 Deposition, recycling, and archival of nitrate stable isotopes between the air–snow interface: comparison between Dronning Maud Land and Dome C, Antarctica Winton, V. Holly L., Holly L Ming, Alison Caillon, Nicolas Hauge, Lisa Jones, Anna, E Savarino, Joel Yang, Xin Frey, Markus, M Institut des Géosciences de l’Environnement (IGE) Institut de Recherche pour le Développement (IRD)-Institut national des sciences de l'Univers (INSU - CNRS)-Centre National de la Recherche Scientifique (CNRS)-Université Grenoble Alpes (UGA)-Institut polytechnique de Grenoble - Grenoble Institute of Technology (Grenoble INP ) Université Grenoble Alpes (UGA) ANR-16-CE01-0011,EAIIST,Projet International d'exploration de la calotte polaire de l'Antarctique de l'Est(2016) 2020-05-15 https://hal.science/hal-03402284 https://hal.science/hal-03402284/document https://hal.science/hal-03402284/file/Winton-2020.pdf https://doi.org/10.5194/acp-20-5861-2020 en eng HAL CCSD European Geosciences Union info:eu-repo/semantics/altIdentifier/doi/10.5194/acp-20-5861-2020 hal-03402284 https://hal.science/hal-03402284 https://hal.science/hal-03402284/document https://hal.science/hal-03402284/file/Winton-2020.pdf doi:10.5194/acp-20-5861-2020 info:eu-repo/semantics/OpenAccess ISSN: 1680-7316 EISSN: 1680-7324 Atmospheric Chemistry and Physics https://hal.science/hal-03402284 Atmospheric Chemistry and Physics, 2020, 20 (9), pp.5861 - 5885. ⟨10.5194/acp-20-5861-2020⟩ [SDU.OCEAN]Sciences of the Universe [physics]/Ocean Atmosphere [SDU.STU.GL]Sciences of the Universe [physics]/Earth Sciences/Glaciology [SDU.STU.GC]Sciences of the Universe [physics]/Earth Sciences/Geochemistry info:eu-repo/semantics/article Journal articles 2020 ftinsu https://doi.org/10.5194/acp-20-5861-2020 2024-04-05T00:36:09Z International audience Abstract. The nitrogen stable isotopic composition in nitrate (δ15N-NO3-) measured in ice cores from low-snow-accumulation regions in East Antarctica has the potential to provide constraints on past ultraviolet (UV) radiation and thereby total column ozone (TCO) due to the sensitivity of nitrate (NO3-) photolysis to UV radiation. However, understanding the transfer of reactive nitrogen at the air–snow interface in polar regions is paramount for the interpretation of ice core records of δ15N-NO3- and NO3- mass concentrations. As NO3- undergoes a number of post-depositional processes before it is archived in ice cores, site-specific observations of δ15N-NO3- and air–snow transfer modelling are necessary to understand and quantify the complex photochemical processes at play. As part of the Isotopic Constraints on Past Ozone Layer Thickness in Polar Ice (ISOL-ICE) project, we report new measurements of NO3- mass concentration and δ15N-NO3- in the atmosphere, skin layer (operationally defined as the top 5 mm of the snowpack), and snow pit depth profiles at Kohnen Station, Dronning Maud Land (DML), Antarctica. We compare the results to previous studies and new data, presented here, from Dome C on the East Antarctic Plateau. Additionally, we apply the conceptual 1D model of TRansfer of Atmospheric Nitrate Stable Isotopes To the Snow (TRANSITS) to assess the impact of NO3- recycling on δ15N-NO3- and NO3- mass concentrations archived in snow and firn. We find clear evidence of NO3- photolysis at DML and confirmation of previous theoretical, field, and laboratory studies that UV photolysis is driving NO3- recycling and redistribution at DML. Firstly, strong denitrification of the snowpack is observed through the δ15N-NO3- signature, which evolves from the enriched snowpack (−3 ‰ to 100 ‰), to the skin layer (−20 ‰ to 3 ‰), to the depleted atmosphere (−50 ‰ to −20 ‰), corresponding to mass loss of NO3- from the snowpack. Based on the TRANSITS model, we find that NO3- is recycled two times, on ... Article in Journal/Newspaper Antarc* Antarctic Antarctica DML Dronning Maud Land East Antarctica ice core Institut national des sciences de l'Univers: HAL-INSU Atmospheric Chemistry and Physics 20 9 5861 5885 |