Carbonate precipitation in brine – a potential trigger for tropospheric ozone depletion events
Tropospheric ozone depletion events (ODEs) at high latitudes were discovered 20 years ago and are attributed to bromine explosions. However, an unresolved issue is the explanation of how the acid-catalyzed reaction cycle is triggered in atmospheric particles derived from alkaline sea water. By simul...
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Online Access: | https://doi.org/10.5194/acp-6-4653-2006 https://www.atmos-chem-phys.net/6/4653/2006/ |
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ftcopernicus:oai:publications.copernicus.org:acp4335 2023-05-15T18:18:07+02:00 Carbonate precipitation in brine – a potential trigger for tropospheric ozone depletion events Sander, R. Burrows, J. Kaleschke, L. 2018-06-28 application/pdf https://doi.org/10.5194/acp-6-4653-2006 https://www.atmos-chem-phys.net/6/4653/2006/ eng eng doi:10.5194/acp-6-4653-2006 https://www.atmos-chem-phys.net/6/4653/2006/ eISSN: 1680-7324 Text 2018 ftcopernicus https://doi.org/10.5194/acp-6-4653-2006 2019-12-24T09:58:46Z Tropospheric ozone depletion events (ODEs) at high latitudes were discovered 20 years ago and are attributed to bromine explosions. However, an unresolved issue is the explanation of how the acid-catalyzed reaction cycle is triggered in atmospheric particles derived from alkaline sea water. By simulating the chemistry occuring in polar regions over recently formed sea ice, we can model successfully the transformation of inert sea-salt bromide to reactive bromine monoxide (BrO) and the subsequent ODE when precipitation of calcium carbonate from freezing sea water is taken into account. In addition, we found the temperature dependence of the equilibrium BrCl+Br − ↔Br 2 Cl − to be important. Text Sea ice Copernicus Publications: E-Journals Atmospheric Chemistry and Physics 6 12 4653 4658 |
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Open Polar |
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Copernicus Publications: E-Journals |
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ftcopernicus |
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English |
description |
Tropospheric ozone depletion events (ODEs) at high latitudes were discovered 20 years ago and are attributed to bromine explosions. However, an unresolved issue is the explanation of how the acid-catalyzed reaction cycle is triggered in atmospheric particles derived from alkaline sea water. By simulating the chemistry occuring in polar regions over recently formed sea ice, we can model successfully the transformation of inert sea-salt bromide to reactive bromine monoxide (BrO) and the subsequent ODE when precipitation of calcium carbonate from freezing sea water is taken into account. In addition, we found the temperature dependence of the equilibrium BrCl+Br − ↔Br 2 Cl − to be important. |
format |
Text |
author |
Sander, R. Burrows, J. Kaleschke, L. |
spellingShingle |
Sander, R. Burrows, J. Kaleschke, L. Carbonate precipitation in brine – a potential trigger for tropospheric ozone depletion events |
author_facet |
Sander, R. Burrows, J. Kaleschke, L. |
author_sort |
Sander, R. |
title |
Carbonate precipitation in brine – a potential trigger for tropospheric ozone depletion events |
title_short |
Carbonate precipitation in brine – a potential trigger for tropospheric ozone depletion events |
title_full |
Carbonate precipitation in brine – a potential trigger for tropospheric ozone depletion events |
title_fullStr |
Carbonate precipitation in brine – a potential trigger for tropospheric ozone depletion events |
title_full_unstemmed |
Carbonate precipitation in brine – a potential trigger for tropospheric ozone depletion events |
title_sort |
carbonate precipitation in brine – a potential trigger for tropospheric ozone depletion events |
publishDate |
2018 |
url |
https://doi.org/10.5194/acp-6-4653-2006 https://www.atmos-chem-phys.net/6/4653/2006/ |
genre |
Sea ice |
genre_facet |
Sea ice |
op_source |
eISSN: 1680-7324 |
op_relation |
doi:10.5194/acp-6-4653-2006 https://www.atmos-chem-phys.net/6/4653/2006/ |
op_doi |
https://doi.org/10.5194/acp-6-4653-2006 |
container_title |
Atmospheric Chemistry and Physics |
container_volume |
6 |
container_issue |
12 |
container_start_page |
4653 |
op_container_end_page |
4658 |
_version_ |
1766194534678528000 |