Dynamic recycling of gaseous elemental mercury in the boundary layer of the Antarctic Plateau
International audience Gaseous elemental mercury (Hg0) was investigated in the troposphere and in the interstitial air extracted from the snow at Dome Concordia station (alt. 3320 m) on the Antarctic Plateau during January 2009. Measurements and modeling studies showed evidence of a very dynamic and...
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ftinsu:oai:HAL:insu-00843620v1 2024-04-28T07:59:14+00:00 Dynamic recycling of gaseous elemental mercury in the boundary layer of the Antarctic Plateau Dommergue, A. Barret, M. Courteaud, J. Cristofanelli, P. Ferrari, C. P. Gallée, H. 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) CNR Institute of Atmospheric Sciences and Climate (ISAC) National Research Council of Italy 2012-11-21 https://insu.hal.science/insu-00843620 https://insu.hal.science/insu-00843620/document https://insu.hal.science/insu-00843620/file/acp-12-11027-2012.pdf https://doi.org/10.5194/acp-12-11027-2012 en eng HAL CCSD European Geosciences Union info:eu-repo/semantics/altIdentifier/doi/10.5194/acp-12-11027-2012 insu-00843620 https://insu.hal.science/insu-00843620 https://insu.hal.science/insu-00843620/document https://insu.hal.science/insu-00843620/file/acp-12-11027-2012.pdf doi:10.5194/acp-12-11027-2012 info:eu-repo/semantics/OpenAccess ISSN: 1680-7316 EISSN: 1680-7324 Atmospheric Chemistry and Physics https://insu.hal.science/insu-00843620 Atmospheric Chemistry and Physics, 2012, 12, pp.11027- 11036. ⟨10.5194/acp-12-11027-2012⟩ [SDU.STU]Sciences of the Universe [physics]/Earth Sciences info:eu-repo/semantics/article Journal articles 2012 ftinsu https://doi.org/10.5194/acp-12-11027-2012 2024-04-05T00:21:12Z International audience Gaseous elemental mercury (Hg0) was investigated in the troposphere and in the interstitial air extracted from the snow at Dome Concordia station (alt. 3320 m) on the Antarctic Plateau during January 2009. Measurements and modeling studies showed evidence of a very dynamic and daily cycling of Hg0 inside the mixing layer with a range of values from 0.2 ng m−3 up to 2.3 ng m−3. During low solar irradiation periods, fast Hg0 oxidation processes in a confined layer were suspected. Unexpectedly high Hg0 concentrations for such a remote place were measured under higher solar irradiation due to snow photochemistry. We suggest that a daily cycling of reemission/oxidation occurs during summer within the mixing layer at Dome Concordia. Hg0 concentrations showed a negative correlation with ozone mixing ratios, which contrasts with atmospheric mer- cury depletion events observed during the Arctic spring. Un- like previous Antarctic studies, we think that atmospheric Hg0 removal may not be the result of advection processes. The daily and dramatic Hg0 losses could be a consequence of surface or snow induced oxidation pathways. It remains however unclear whether halogens are involved. The cycling of other oxidants should be investigated together with Hg species in order to clarify the complex reactivity on the Antarctic plateau. Article in Journal/Newspaper Antarc* Antarctic Arctic Institut national des sciences de l'Univers: HAL-INSU Atmospheric Chemistry and Physics 12 22 11027 11036 |
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Open Polar |
collection |
Institut national des sciences de l'Univers: HAL-INSU |
op_collection_id |
ftinsu |
language |
English |
topic |
[SDU.STU]Sciences of the Universe [physics]/Earth Sciences |
spellingShingle |
[SDU.STU]Sciences of the Universe [physics]/Earth Sciences Dommergue, A. Barret, M. Courteaud, J. Cristofanelli, P. Ferrari, C. P. Gallée, H. Dynamic recycling of gaseous elemental mercury in the boundary layer of the Antarctic Plateau |
topic_facet |
[SDU.STU]Sciences of the Universe [physics]/Earth Sciences |
description |
International audience Gaseous elemental mercury (Hg0) was investigated in the troposphere and in the interstitial air extracted from the snow at Dome Concordia station (alt. 3320 m) on the Antarctic Plateau during January 2009. Measurements and modeling studies showed evidence of a very dynamic and daily cycling of Hg0 inside the mixing layer with a range of values from 0.2 ng m−3 up to 2.3 ng m−3. During low solar irradiation periods, fast Hg0 oxidation processes in a confined layer were suspected. Unexpectedly high Hg0 concentrations for such a remote place were measured under higher solar irradiation due to snow photochemistry. We suggest that a daily cycling of reemission/oxidation occurs during summer within the mixing layer at Dome Concordia. Hg0 concentrations showed a negative correlation with ozone mixing ratios, which contrasts with atmospheric mer- cury depletion events observed during the Arctic spring. Un- like previous Antarctic studies, we think that atmospheric Hg0 removal may not be the result of advection processes. The daily and dramatic Hg0 losses could be a consequence of surface or snow induced oxidation pathways. It remains however unclear whether halogens are involved. The cycling of other oxidants should be investigated together with Hg species in order to clarify the complex reactivity on the Antarctic plateau. |
author2 |
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) CNR Institute of Atmospheric Sciences and Climate (ISAC) National Research Council of Italy |
format |
Article in Journal/Newspaper |
author |
Dommergue, A. Barret, M. Courteaud, J. Cristofanelli, P. Ferrari, C. P. Gallée, H. |
author_facet |
Dommergue, A. Barret, M. Courteaud, J. Cristofanelli, P. Ferrari, C. P. Gallée, H. |
author_sort |
Dommergue, A. |
title |
Dynamic recycling of gaseous elemental mercury in the boundary layer of the Antarctic Plateau |
title_short |
Dynamic recycling of gaseous elemental mercury in the boundary layer of the Antarctic Plateau |
title_full |
Dynamic recycling of gaseous elemental mercury in the boundary layer of the Antarctic Plateau |
title_fullStr |
Dynamic recycling of gaseous elemental mercury in the boundary layer of the Antarctic Plateau |
title_full_unstemmed |
Dynamic recycling of gaseous elemental mercury in the boundary layer of the Antarctic Plateau |
title_sort |
dynamic recycling of gaseous elemental mercury in the boundary layer of the antarctic plateau |
publisher |
HAL CCSD |
publishDate |
2012 |
url |
https://insu.hal.science/insu-00843620 https://insu.hal.science/insu-00843620/document https://insu.hal.science/insu-00843620/file/acp-12-11027-2012.pdf https://doi.org/10.5194/acp-12-11027-2012 |
genre |
Antarc* Antarctic Arctic |
genre_facet |
Antarc* Antarctic Arctic |
op_source |
ISSN: 1680-7316 EISSN: 1680-7324 Atmospheric Chemistry and Physics https://insu.hal.science/insu-00843620 Atmospheric Chemistry and Physics, 2012, 12, pp.11027- 11036. ⟨10.5194/acp-12-11027-2012⟩ |
op_relation |
info:eu-repo/semantics/altIdentifier/doi/10.5194/acp-12-11027-2012 insu-00843620 https://insu.hal.science/insu-00843620 https://insu.hal.science/insu-00843620/document https://insu.hal.science/insu-00843620/file/acp-12-11027-2012.pdf doi:10.5194/acp-12-11027-2012 |
op_rights |
info:eu-repo/semantics/OpenAccess |
op_doi |
https://doi.org/10.5194/acp-12-11027-2012 |
container_title |
Atmospheric Chemistry and Physics |
container_volume |
12 |
container_issue |
22 |
container_start_page |
11027 |
op_container_end_page |
11036 |
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