Regional characteristics of atmospheric sulfate formation in East Antarctica imprinted on 17 O-excess signature
International audience 17O-excess (Δ17O = δ17O − 0.52 × δ18O) of sulfate trapped in Antarctic ice cores has been proposed as a potential tool for assessing past oxidant chemistry, while insufficient understanding of atmospheric sulfate formation around Antarctica hampers its interpretation. To probe...
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Online Access: | https://hal.science/hal-03402190 https://hal.science/hal-03402190/document https://hal.science/hal-03402190/file/885769_1_merged_1606359882.pdf https://doi.org/10.1029/2020JD033583 |
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ftanrparis:oai:HAL:hal-03402190v1 2024-06-09T07:39:47+00:00 Regional characteristics of atmospheric sulfate formation in East Antarctica imprinted on 17 O-excess signature Ishino, Sakiko Hattori, Shohei Legrand, Michel Chen, Q. Alexander, Becky Shao, J. Huang, J. Jaeglé, L. Jourdain, Bruno Preunkert, Suzanne Yamada, A. Yoshida, Naohiro Savarino, Joël Tokyo Institute of Technology Tokyo (TITECH) 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) University of Washington Seattle ANR-16-CE01-0011,EAIIST,Projet International d'exploration de la calotte polaire de l'Antarctique de l'Est(2016) 2021 https://hal.science/hal-03402190 https://hal.science/hal-03402190/document https://hal.science/hal-03402190/file/885769_1_merged_1606359882.pdf https://doi.org/10.1029/2020JD033583 en eng HAL CCSD American Geophysical Union info:eu-repo/semantics/altIdentifier/doi/10.1029/2020JD033583 hal-03402190 https://hal.science/hal-03402190 https://hal.science/hal-03402190/document https://hal.science/hal-03402190/file/885769_1_merged_1606359882.pdf doi:10.1029/2020JD033583 http://creativecommons.org/licenses/by-nc/ info:eu-repo/semantics/OpenAccess ISSN: 2169-897X EISSN: 2169-8996 Journal of Geophysical Research: Atmospheres https://hal.science/hal-03402190 Journal of Geophysical Research: Atmospheres, 2021, 126 (6), pp.e2020JD033583. ⟨10.1029/2020JD033583⟩ [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 2021 ftanrparis https://doi.org/10.1029/2020JD033583 2024-05-16T15:04:35Z International audience 17O-excess (Δ17O = δ17O − 0.52 × δ18O) of sulfate trapped in Antarctic ice cores has been proposed as a potential tool for assessing past oxidant chemistry, while insufficient understanding of atmospheric sulfate formation around Antarctica hampers its interpretation. To probe influences of regional specific chemistry, we compared year-round observations of Δ17O of non-sea-salt sulfate in aerosols (Δ17O(SO42−)nss) at Dome C and Dumont d'Urville, inland and coastal sites in East Antarctica, throughout the year 2011. Although Δ17O(SO42−)nss at both sites showed consistent seasonality with summer minima (∼1.0‰) and winter maxima (∼2.5‰) owing to sunlight-driven changes in the relative importance of O3 oxidation to OH and H2O2 oxidation, significant intersite differences were observed in austral spring–summer and autumn. The cooccurrence of higher Δ17O(SO42−)nss at inland (2.0‰ ± 0.1‰) than the coastal site (1.2‰ ± 0.1‰) and chemical destruction of methanesulfonate (MS–) in aerosols at inland during spring–summer (October–December), combined with the first estimated Δ17O(MS–) of ∼16‰, implies that MS– destruction produces sulfate with high Δ17O(SO42−)nss of ∼12‰. If contributing to the known postdepositional decrease of MS– in snow, this process should also cause a significant postdepositional increase in Δ17O(SO42−)nss over 1‰, that can reconcile the discrepancy between Δ17O(SO42−)nss in the atmosphere and ice. The higher Δ17O(SO42−)nss at the coastal site than inland during autumn (March–May) may be associated with oxidation process involving reactive bromine and/or sea-salt particles around the coastal region. Article in Journal/Newspaper Antarc* Antarctic Antarctica East Antarctica Portail HAL-ANR (Agence Nationale de la Recherche) Antarctic East Antarctica Austral Dumont d'Urville ENVELOPE(140.017,140.017,-66.667,-66.667) Dumont-d'Urville ENVELOPE(140.013,140.013,-66.667,-66.667) Journal of Geophysical Research: Atmospheres 126 6 |
institution |
Open Polar |
collection |
Portail HAL-ANR (Agence Nationale de la Recherche) |
op_collection_id |
ftanrparis |
language |
English |
topic |
[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 Ishino, Sakiko Hattori, Shohei Legrand, Michel Chen, Q. Alexander, Becky Shao, J. Huang, J. Jaeglé, L. Jourdain, Bruno Preunkert, Suzanne Yamada, A. Yoshida, Naohiro Savarino, Joël Regional characteristics of atmospheric sulfate formation in East Antarctica imprinted on 17 O-excess signature |
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 17O-excess (Δ17O = δ17O − 0.52 × δ18O) of sulfate trapped in Antarctic ice cores has been proposed as a potential tool for assessing past oxidant chemistry, while insufficient understanding of atmospheric sulfate formation around Antarctica hampers its interpretation. To probe influences of regional specific chemistry, we compared year-round observations of Δ17O of non-sea-salt sulfate in aerosols (Δ17O(SO42−)nss) at Dome C and Dumont d'Urville, inland and coastal sites in East Antarctica, throughout the year 2011. Although Δ17O(SO42−)nss at both sites showed consistent seasonality with summer minima (∼1.0‰) and winter maxima (∼2.5‰) owing to sunlight-driven changes in the relative importance of O3 oxidation to OH and H2O2 oxidation, significant intersite differences were observed in austral spring–summer and autumn. The cooccurrence of higher Δ17O(SO42−)nss at inland (2.0‰ ± 0.1‰) than the coastal site (1.2‰ ± 0.1‰) and chemical destruction of methanesulfonate (MS–) in aerosols at inland during spring–summer (October–December), combined with the first estimated Δ17O(MS–) of ∼16‰, implies that MS– destruction produces sulfate with high Δ17O(SO42−)nss of ∼12‰. If contributing to the known postdepositional decrease of MS– in snow, this process should also cause a significant postdepositional increase in Δ17O(SO42−)nss over 1‰, that can reconcile the discrepancy between Δ17O(SO42−)nss in the atmosphere and ice. The higher Δ17O(SO42−)nss at the coastal site than inland during autumn (March–May) may be associated with oxidation process involving reactive bromine and/or sea-salt particles around the coastal region. |
author2 |
Tokyo Institute of Technology Tokyo (TITECH) 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) University of Washington Seattle 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 |
Ishino, Sakiko Hattori, Shohei Legrand, Michel Chen, Q. Alexander, Becky Shao, J. Huang, J. Jaeglé, L. Jourdain, Bruno Preunkert, Suzanne Yamada, A. Yoshida, Naohiro Savarino, Joël |
author_facet |
Ishino, Sakiko Hattori, Shohei Legrand, Michel Chen, Q. Alexander, Becky Shao, J. Huang, J. Jaeglé, L. Jourdain, Bruno Preunkert, Suzanne Yamada, A. Yoshida, Naohiro Savarino, Joël |
author_sort |
Ishino, Sakiko |
title |
Regional characteristics of atmospheric sulfate formation in East Antarctica imprinted on 17 O-excess signature |
title_short |
Regional characteristics of atmospheric sulfate formation in East Antarctica imprinted on 17 O-excess signature |
title_full |
Regional characteristics of atmospheric sulfate formation in East Antarctica imprinted on 17 O-excess signature |
title_fullStr |
Regional characteristics of atmospheric sulfate formation in East Antarctica imprinted on 17 O-excess signature |
title_full_unstemmed |
Regional characteristics of atmospheric sulfate formation in East Antarctica imprinted on 17 O-excess signature |
title_sort |
regional characteristics of atmospheric sulfate formation in east antarctica imprinted on 17 o-excess signature |
publisher |
HAL CCSD |
publishDate |
2021 |
url |
https://hal.science/hal-03402190 https://hal.science/hal-03402190/document https://hal.science/hal-03402190/file/885769_1_merged_1606359882.pdf https://doi.org/10.1029/2020JD033583 |
long_lat |
ENVELOPE(140.017,140.017,-66.667,-66.667) ENVELOPE(140.013,140.013,-66.667,-66.667) |
geographic |
Antarctic East Antarctica Austral Dumont d'Urville Dumont-d'Urville |
geographic_facet |
Antarctic East Antarctica Austral Dumont d'Urville Dumont-d'Urville |
genre |
Antarc* Antarctic Antarctica East Antarctica |
genre_facet |
Antarc* Antarctic Antarctica East Antarctica |
op_source |
ISSN: 2169-897X EISSN: 2169-8996 Journal of Geophysical Research: Atmospheres https://hal.science/hal-03402190 Journal of Geophysical Research: Atmospheres, 2021, 126 (6), pp.e2020JD033583. ⟨10.1029/2020JD033583⟩ |
op_relation |
info:eu-repo/semantics/altIdentifier/doi/10.1029/2020JD033583 hal-03402190 https://hal.science/hal-03402190 https://hal.science/hal-03402190/document https://hal.science/hal-03402190/file/885769_1_merged_1606359882.pdf doi:10.1029/2020JD033583 |
op_rights |
http://creativecommons.org/licenses/by-nc/ info:eu-repo/semantics/OpenAccess |
op_doi |
https://doi.org/10.1029/2020JD033583 |
container_title |
Journal of Geophysical Research: Atmospheres |
container_volume |
126 |
container_issue |
6 |
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1801382038869114880 |