Investigating halogens and MSA in the Southern Hemisphere: A spatial analysis
9 pags., 3 figs., 1 tab. Sub-Antarctic islands and Antarctic coastal regions provide valuable sites for investigating environmental processes in the Southern Ocean. The fact that these sites are situated within the sea ice zone underscores their significance in investigating the impact of sea ice on...
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Online Access: | http://hdl.handle.net/10261/356728 https://doi.org/10.1016/j.atmosenv.2023.120279 https://api.elsevier.com/content/abstract/scopus_id/85180411140 |
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ftcsic:oai:digital.csic.es:10261/356728 2024-06-09T07:39:28+00:00 Investigating halogens and MSA in the Southern Hemisphere: A spatial analysis Segato, Delia Thomas, Elizabeth R. Tetzner, Dieter Jackson, Sarah Moser, Dorothea Elisabeth Turetta, Clara Fernandez, Rafael P. Saiz-Lopez, A. Pedro, Joel Markle, Bradley Spolaor, Andrea École Polytechnique Fédérale de Lausanne Swiss Polar Institute Ferring Pharmaceuticals Natural Environment Research Council (UK) Programma Nazionale per la Ricerca in Antartide Royal Society (UK) Segato, Delia Thomas, Elizabeth R. #NODATA# Moser, Dorothea Elisabeth Fernandez, Rafael P. Spolaor, Andrea 2024-02-15 http://hdl.handle.net/10261/356728 https://doi.org/10.1016/j.atmosenv.2023.120279 https://api.elsevier.com/content/abstract/scopus_id/85180411140 en eng Elsevier Atmospheric Environment Publisher's version https://doi.org/10.1016/j.atmosenv.2023.120279 Sí Atmospheric Environment 319: 120279 (2024) 1352-2310 http://hdl.handle.net/10261/356728 doi:10.1016/j.atmosenv.2023.120279 2-s2.0-85180411140 https://api.elsevier.com/content/abstract/scopus_id/85180411140 open artículo 2024 ftcsic https://doi.org/10.1016/j.atmosenv.2023.120279 2024-05-14T23:52:28Z 9 pags., 3 figs., 1 tab. Sub-Antarctic islands and Antarctic coastal regions provide valuable sites for investigating environmental processes in the Southern Ocean. The fact that these sites are situated within the sea ice zone underscores their significance in investigating the impact of sea ice on the chemical composition of the boundary layer. In this study we report multi-year average levels of marine aerosols, including bromine, sodium, methanesulphonic acid and iodine, measured in five firn cores collected from sub-Antarctic Islands and coastal Antarctic sites. The records are compared with published Antarctic records to explore the spatial distribution of these species in the Antarctic region and their relationship with sea ice variability. Being mainly sourced from sea-salt aerosols, sodium and bromine exhibit the largest concentrations in the sub-Antarctic region, with progressively reduced deposition from the coast towards the central Antarctic plateau. Due to its gas-phase chemistry, bromine is depleted with respect to sodium in the sub-Antarctic sites. Bromine emitted in the form of sea-salt aerosols undergoes multi-phase recycling in the lower troposphere and, together with gas-phase bromine emitted from sea ice, is likely to be transported away from the source, depositing in enriched concentrations in the plateau compared to the Br/Na sea-water mass ratio. Similarly to bromine and sodium, methanesulphonic acid and iodine are found in higher concentrations in the sub-Antarctic sites, especially where the ocean is sea ice-covered during spring as primary production is stronger than in the ice-free ocean. Sea-salt mediated recycling of gas-phase iodine enhances its atmospheric lifetime, delivering enriched iodine depositions to the Antarctic plateau. Depicting the spatial distribution of these elements is of great importance for understanding the processes delivering these impurities around Antarctica. Funding for the subICE campaign was provided by Ecole ´ Polytechnique Federale de Lausanne, the ... Article in Journal/Newspaper Antarc* Antarctic Antarctica Sea ice Southern Ocean Digital.CSIC (Spanish National Research Council) Antarctic Southern Ocean The Antarctic Atmospheric Environment 319 120279 |
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Open Polar |
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Digital.CSIC (Spanish National Research Council) |
op_collection_id |
ftcsic |
language |
English |
description |
9 pags., 3 figs., 1 tab. Sub-Antarctic islands and Antarctic coastal regions provide valuable sites for investigating environmental processes in the Southern Ocean. The fact that these sites are situated within the sea ice zone underscores their significance in investigating the impact of sea ice on the chemical composition of the boundary layer. In this study we report multi-year average levels of marine aerosols, including bromine, sodium, methanesulphonic acid and iodine, measured in five firn cores collected from sub-Antarctic Islands and coastal Antarctic sites. The records are compared with published Antarctic records to explore the spatial distribution of these species in the Antarctic region and their relationship with sea ice variability. Being mainly sourced from sea-salt aerosols, sodium and bromine exhibit the largest concentrations in the sub-Antarctic region, with progressively reduced deposition from the coast towards the central Antarctic plateau. Due to its gas-phase chemistry, bromine is depleted with respect to sodium in the sub-Antarctic sites. Bromine emitted in the form of sea-salt aerosols undergoes multi-phase recycling in the lower troposphere and, together with gas-phase bromine emitted from sea ice, is likely to be transported away from the source, depositing in enriched concentrations in the plateau compared to the Br/Na sea-water mass ratio. Similarly to bromine and sodium, methanesulphonic acid and iodine are found in higher concentrations in the sub-Antarctic sites, especially where the ocean is sea ice-covered during spring as primary production is stronger than in the ice-free ocean. Sea-salt mediated recycling of gas-phase iodine enhances its atmospheric lifetime, delivering enriched iodine depositions to the Antarctic plateau. Depicting the spatial distribution of these elements is of great importance for understanding the processes delivering these impurities around Antarctica. Funding for the subICE campaign was provided by Ecole ´ Polytechnique Federale de Lausanne, the ... |
author2 |
École Polytechnique Fédérale de Lausanne Swiss Polar Institute Ferring Pharmaceuticals Natural Environment Research Council (UK) Programma Nazionale per la Ricerca in Antartide Royal Society (UK) Segato, Delia Thomas, Elizabeth R. #NODATA# Moser, Dorothea Elisabeth Fernandez, Rafael P. Spolaor, Andrea |
format |
Article in Journal/Newspaper |
author |
Segato, Delia Thomas, Elizabeth R. Tetzner, Dieter Jackson, Sarah Moser, Dorothea Elisabeth Turetta, Clara Fernandez, Rafael P. Saiz-Lopez, A. Pedro, Joel Markle, Bradley Spolaor, Andrea |
spellingShingle |
Segato, Delia Thomas, Elizabeth R. Tetzner, Dieter Jackson, Sarah Moser, Dorothea Elisabeth Turetta, Clara Fernandez, Rafael P. Saiz-Lopez, A. Pedro, Joel Markle, Bradley Spolaor, Andrea Investigating halogens and MSA in the Southern Hemisphere: A spatial analysis |
author_facet |
Segato, Delia Thomas, Elizabeth R. Tetzner, Dieter Jackson, Sarah Moser, Dorothea Elisabeth Turetta, Clara Fernandez, Rafael P. Saiz-Lopez, A. Pedro, Joel Markle, Bradley Spolaor, Andrea |
author_sort |
Segato, Delia |
title |
Investigating halogens and MSA in the Southern Hemisphere: A spatial analysis |
title_short |
Investigating halogens and MSA in the Southern Hemisphere: A spatial analysis |
title_full |
Investigating halogens and MSA in the Southern Hemisphere: A spatial analysis |
title_fullStr |
Investigating halogens and MSA in the Southern Hemisphere: A spatial analysis |
title_full_unstemmed |
Investigating halogens and MSA in the Southern Hemisphere: A spatial analysis |
title_sort |
investigating halogens and msa in the southern hemisphere: a spatial analysis |
publisher |
Elsevier |
publishDate |
2024 |
url |
http://hdl.handle.net/10261/356728 https://doi.org/10.1016/j.atmosenv.2023.120279 https://api.elsevier.com/content/abstract/scopus_id/85180411140 |
geographic |
Antarctic Southern Ocean The Antarctic |
geographic_facet |
Antarctic Southern Ocean The Antarctic |
genre |
Antarc* Antarctic Antarctica Sea ice Southern Ocean |
genre_facet |
Antarc* Antarctic Antarctica Sea ice Southern Ocean |
op_relation |
Atmospheric Environment Publisher's version https://doi.org/10.1016/j.atmosenv.2023.120279 Sí Atmospheric Environment 319: 120279 (2024) 1352-2310 http://hdl.handle.net/10261/356728 doi:10.1016/j.atmosenv.2023.120279 2-s2.0-85180411140 https://api.elsevier.com/content/abstract/scopus_id/85180411140 |
op_rights |
open |
op_doi |
https://doi.org/10.1016/j.atmosenv.2023.120279 |
container_title |
Atmospheric Environment |
container_volume |
319 |
container_start_page |
120279 |
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1801379738736918528 |