Precipitation of salts in freezing seawater and ozone depletion events: a status report
International audience In springtime, the polar marine boundary layer exhibits drastic ozone depletion events (ODEs), associated with elevated bromine oxide (BrO) mixing ratios. The current interpretation of this peculiar chemistry requires the existence of acid and bromide-enriched surfaces to hete...
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
2008
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Online Access: | https://hal.archives-ouvertes.fr/hal-02133306 https://hal.archives-ouvertes.fr/hal-02133306/document https://hal.archives-ouvertes.fr/hal-02133306/file/acp-8-7317-2008.pdf https://doi.org/10.5194/ACP-8-7317-2008 |
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Archive ouverte HAL (Hyper Article en Ligne, CCSD - Centre pour la Communication Scientifique Directe) |
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language |
English |
topic |
[SDU.OCEAN]Sciences of the Universe [physics]/Ocean Atmosphere [SDU.STU.GC]Sciences of the Universe [physics]/Earth Sciences/Geochemistry [SDU.STU.GL]Sciences of the Universe [physics]/Earth Sciences/Glaciology |
spellingShingle |
[SDU.OCEAN]Sciences of the Universe [physics]/Ocean Atmosphere [SDU.STU.GC]Sciences of the Universe [physics]/Earth Sciences/Geochemistry [SDU.STU.GL]Sciences of the Universe [physics]/Earth Sciences/Glaciology Morin, Samuel Marion, G. Von Glasow, R. Voisin, D. Bouchez, J. Savarino, J. Precipitation of salts in freezing seawater and ozone depletion events: a status report |
topic_facet |
[SDU.OCEAN]Sciences of the Universe [physics]/Ocean Atmosphere [SDU.STU.GC]Sciences of the Universe [physics]/Earth Sciences/Geochemistry [SDU.STU.GL]Sciences of the Universe [physics]/Earth Sciences/Glaciology |
description |
International audience In springtime, the polar marine boundary layer exhibits drastic ozone depletion events (ODEs), associated with elevated bromine oxide (BrO) mixing ratios. The current interpretation of this peculiar chemistry requires the existence of acid and bromide-enriched surfaces to heterogeneously promote and sustain ODEs. Sander et al. (2006) have proposed that calcium carbonate (CaCO 3) precipitation in any seawater-derived medium could potentially decrease its alkalinity, making it easier for atmospheric acids such as HNO 3 and H 2 SO 4 to acidify it. We performed simulations using the state-of-the-art FREZCHEM model, capable of handling the thermodynamics of concentrated electrolyte solutions, to try to reproduce their results, and found that when ikaite (CaCO 3 ·6H 2 O) rather than calcite (CaCO 3) precipitates , there is no such effect on alkalinity. Given that ikaite has recently been identified in Antarctic brines (Dieck-mann et al., 2008), our results show that great caution should be exercised when using the results of Sander et al. (2006), and reveal the urgent need of laboratory investigations on the actual link(s) between bromine activation and the pH of the surfaces on which it is supposed to take place at subzero temperature. In addition, the evolution of the Cl/Br ratio in the brine during freezing was computed using FREZCHEM, taking into account Br substitutions in Cl-containing salts. |
author2 |
Météo France Thermodynamique et Energétique des fluides complexes (TEFC) Université de Pau et des Pays de l'Adour (UPPA)-TOTAL SA-Centre National de la Recherche Scientifique (CNRS) Institute of Environmental Physics Heidelberg (IUP) Universität Heidelberg Heidelberg 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) Institut de Physique du Globe de Paris (IPGP) Université Pierre et Marie Curie - Paris 6 (UPMC)-Institut national des sciences de l'Univers (INSU - CNRS)-IPG PARIS-Université Paris Diderot - Paris 7 (UPD7)-Université de La Réunion (UR)-Centre National de la Recherche Scientifique (CNRS) |
format |
Article in Journal/Newspaper |
author |
Morin, Samuel Marion, G. Von Glasow, R. Voisin, D. Bouchez, J. Savarino, J. |
author_facet |
Morin, Samuel Marion, G. Von Glasow, R. Voisin, D. Bouchez, J. Savarino, J. |
author_sort |
Morin, Samuel |
title |
Precipitation of salts in freezing seawater and ozone depletion events: a status report |
title_short |
Precipitation of salts in freezing seawater and ozone depletion events: a status report |
title_full |
Precipitation of salts in freezing seawater and ozone depletion events: a status report |
title_fullStr |
Precipitation of salts in freezing seawater and ozone depletion events: a status report |
title_full_unstemmed |
Precipitation of salts in freezing seawater and ozone depletion events: a status report |
title_sort |
precipitation of salts in freezing seawater and ozone depletion events: a status report |
publisher |
HAL CCSD |
publishDate |
2008 |
url |
https://hal.archives-ouvertes.fr/hal-02133306 https://hal.archives-ouvertes.fr/hal-02133306/document https://hal.archives-ouvertes.fr/hal-02133306/file/acp-8-7317-2008.pdf https://doi.org/10.5194/ACP-8-7317-2008 |
geographic |
Antarctic |
geographic_facet |
Antarctic |
genre |
Antarc* Antarctic |
genre_facet |
Antarc* Antarctic |
op_source |
ISSN: 1680-7316 EISSN: 1680-7324 Atmospheric Chemistry and Physics https://hal.archives-ouvertes.fr/hal-02133306 Atmospheric Chemistry and Physics, European Geosciences Union, 2008, 8 (23), pp.7317-7324. ⟨10.5194/ACP-8-7317-2008⟩ |
op_relation |
info:eu-repo/semantics/altIdentifier/doi/10.5194/ACP-8-7317-2008 hal-02133306 https://hal.archives-ouvertes.fr/hal-02133306 https://hal.archives-ouvertes.fr/hal-02133306/document https://hal.archives-ouvertes.fr/hal-02133306/file/acp-8-7317-2008.pdf doi:10.5194/ACP-8-7317-2008 |
op_rights |
info:eu-repo/semantics/OpenAccess |
op_doi |
https://doi.org/10.5194/ACP-8-7317-2008 |
container_title |
Atmospheric Chemistry and Physics |
container_volume |
8 |
container_issue |
23 |
container_start_page |
7317 |
op_container_end_page |
7324 |
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spelling |
ftccsdartic:oai:HAL:hal-02133306v1 2023-05-15T13:57:08+02:00 Precipitation of salts in freezing seawater and ozone depletion events: a status report Morin, Samuel Marion, G. Von Glasow, R. Voisin, D. Bouchez, J. Savarino, J. Météo France Thermodynamique et Energétique des fluides complexes (TEFC) Université de Pau et des Pays de l'Adour (UPPA)-TOTAL SA-Centre National de la Recherche Scientifique (CNRS) Institute of Environmental Physics Heidelberg (IUP) Universität Heidelberg Heidelberg 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) Institut de Physique du Globe de Paris (IPGP) Université Pierre et Marie Curie - Paris 6 (UPMC)-Institut national des sciences de l'Univers (INSU - CNRS)-IPG PARIS-Université Paris Diderot - Paris 7 (UPD7)-Université de La Réunion (UR)-Centre National de la Recherche Scientifique (CNRS) 2008 https://hal.archives-ouvertes.fr/hal-02133306 https://hal.archives-ouvertes.fr/hal-02133306/document https://hal.archives-ouvertes.fr/hal-02133306/file/acp-8-7317-2008.pdf https://doi.org/10.5194/ACP-8-7317-2008 en eng HAL CCSD European Geosciences Union info:eu-repo/semantics/altIdentifier/doi/10.5194/ACP-8-7317-2008 hal-02133306 https://hal.archives-ouvertes.fr/hal-02133306 https://hal.archives-ouvertes.fr/hal-02133306/document https://hal.archives-ouvertes.fr/hal-02133306/file/acp-8-7317-2008.pdf doi:10.5194/ACP-8-7317-2008 info:eu-repo/semantics/OpenAccess ISSN: 1680-7316 EISSN: 1680-7324 Atmospheric Chemistry and Physics https://hal.archives-ouvertes.fr/hal-02133306 Atmospheric Chemistry and Physics, European Geosciences Union, 2008, 8 (23), pp.7317-7324. ⟨10.5194/ACP-8-7317-2008⟩ [SDU.OCEAN]Sciences of the Universe [physics]/Ocean Atmosphere [SDU.STU.GC]Sciences of the Universe [physics]/Earth Sciences/Geochemistry [SDU.STU.GL]Sciences of the Universe [physics]/Earth Sciences/Glaciology info:eu-repo/semantics/article Journal articles 2008 ftccsdartic https://doi.org/10.5194/ACP-8-7317-2008 2021-11-21T00:49:32Z International audience In springtime, the polar marine boundary layer exhibits drastic ozone depletion events (ODEs), associated with elevated bromine oxide (BrO) mixing ratios. The current interpretation of this peculiar chemistry requires the existence of acid and bromide-enriched surfaces to heterogeneously promote and sustain ODEs. Sander et al. (2006) have proposed that calcium carbonate (CaCO 3) precipitation in any seawater-derived medium could potentially decrease its alkalinity, making it easier for atmospheric acids such as HNO 3 and H 2 SO 4 to acidify it. We performed simulations using the state-of-the-art FREZCHEM model, capable of handling the thermodynamics of concentrated electrolyte solutions, to try to reproduce their results, and found that when ikaite (CaCO 3 ·6H 2 O) rather than calcite (CaCO 3) precipitates , there is no such effect on alkalinity. Given that ikaite has recently been identified in Antarctic brines (Dieck-mann et al., 2008), our results show that great caution should be exercised when using the results of Sander et al. (2006), and reveal the urgent need of laboratory investigations on the actual link(s) between bromine activation and the pH of the surfaces on which it is supposed to take place at subzero temperature. In addition, the evolution of the Cl/Br ratio in the brine during freezing was computed using FREZCHEM, taking into account Br substitutions in Cl-containing salts. Article in Journal/Newspaper Antarc* Antarctic Archive ouverte HAL (Hyper Article en Ligne, CCSD - Centre pour la Communication Scientifique Directe) Antarctic Atmospheric Chemistry and Physics 8 23 7317 7324 |