BrO, blizzards, and drivers of polar tropospheric ozone depletion events
The source of bromine that drives polar boundary layer ozone depletion events (ODEs) is still open to some debate. While ODEs are generally noted to form under conditions of a shallow stable boundary layer, observations of depleted air under high wind conditions are taken as being transport-related....
Published in: | Atmospheric Chemistry and Physics |
---|---|
Main Authors: | , , , , , , , , |
Format: | Article in Journal/Newspaper |
Language: | English |
Published: |
Copernicus Publications
2009
|
Subjects: | |
Online Access: | http://nora.nerc.ac.uk/id/eprint/11072/ https://nora.nerc.ac.uk/id/eprint/11072/1/acp-9-4639-2009.pdf http://www.atmos-chem-phys.net/9/4639/2009/acp-9-4639-2009.html |
id |
ftnerc:oai:nora.nerc.ac.uk:11072 |
---|---|
record_format |
openpolar |
spelling |
ftnerc:oai:nora.nerc.ac.uk:11072 2023-05-15T13:45:10+02:00 BrO, blizzards, and drivers of polar tropospheric ozone depletion events Jones, Anna E. Anderson, Philip S. Begoin, M. Brough, Neil Hutterli, Manuel A. Marshall, Gareth J. Richter, A. Roscoe, Howard K. Wolff, Eric W. 2009 text http://nora.nerc.ac.uk/id/eprint/11072/ https://nora.nerc.ac.uk/id/eprint/11072/1/acp-9-4639-2009.pdf http://www.atmos-chem-phys.net/9/4639/2009/acp-9-4639-2009.html en eng Copernicus Publications https://nora.nerc.ac.uk/id/eprint/11072/1/acp-9-4639-2009.pdf Jones, Anna E. orcid:0000-0002-2040-4841 Anderson, Philip S.; Begoin, M.; Brough, Neil orcid:0000-0002-2316-5292 Hutterli, Manuel A.; Marshall, Gareth J. orcid:0000-0001-8887-7314 Richter, A.; Roscoe, Howard K.; Wolff, Eric W. 2009 BrO, blizzards, and drivers of polar tropospheric ozone depletion events. Atmospheric Chemistry and Physics, 9 (14). 4639-4652. https://doi.org/10.5194/acp-9-4639-2009 <https://doi.org/10.5194/acp-9-4639-2009> Meteorology and Climatology Earth Sciences Chemistry Atmospheric Sciences Publication - Article PeerReviewed 2009 ftnerc https://doi.org/10.5194/acp-9-4639-2009 2023-02-04T19:27:08Z The source of bromine that drives polar boundary layer ozone depletion events (ODEs) is still open to some debate. While ODEs are generally noted to form under conditions of a shallow stable boundary layer, observations of depleted air under high wind conditions are taken as being transport-related. Here we report observations from Antarctica in which an unusually large cloud of BrO formed over the Weddell Sea. The enhanced BrO was observed over Halley station in coastal Antarctica, providing an opportunity to probe the conditions within an active 'bromine explosion' event. On this occasion, enhanced BrO and depleted boundary layer ozone coincided with high wind speeds and saline blowing snow. We derive a simple model to consider the environmental conditions that favour ODEs and find two maxima, one at low wind/stable boundary layer and one at high wind speeds with blowing snow. Modelling calculations aiming to reproduce the wider regional or global impacts of ODEs, either via radiative effects or as a halogen source, will also need to account for high wind speed mechanisms. Article in Journal/Newspaper Antarc* Antarctica Weddell Sea Natural Environment Research Council: NERC Open Research Archive Halley Station ENVELOPE(-26.541,-26.541,-75.581,-75.581) Weddell Weddell Sea Atmospheric Chemistry and Physics 9 14 4639 4652 |
institution |
Open Polar |
collection |
Natural Environment Research Council: NERC Open Research Archive |
op_collection_id |
ftnerc |
language |
English |
topic |
Meteorology and Climatology Earth Sciences Chemistry Atmospheric Sciences |
spellingShingle |
Meteorology and Climatology Earth Sciences Chemistry Atmospheric Sciences Jones, Anna E. Anderson, Philip S. Begoin, M. Brough, Neil Hutterli, Manuel A. Marshall, Gareth J. Richter, A. Roscoe, Howard K. Wolff, Eric W. BrO, blizzards, and drivers of polar tropospheric ozone depletion events |
topic_facet |
Meteorology and Climatology Earth Sciences Chemistry Atmospheric Sciences |
description |
The source of bromine that drives polar boundary layer ozone depletion events (ODEs) is still open to some debate. While ODEs are generally noted to form under conditions of a shallow stable boundary layer, observations of depleted air under high wind conditions are taken as being transport-related. Here we report observations from Antarctica in which an unusually large cloud of BrO formed over the Weddell Sea. The enhanced BrO was observed over Halley station in coastal Antarctica, providing an opportunity to probe the conditions within an active 'bromine explosion' event. On this occasion, enhanced BrO and depleted boundary layer ozone coincided with high wind speeds and saline blowing snow. We derive a simple model to consider the environmental conditions that favour ODEs and find two maxima, one at low wind/stable boundary layer and one at high wind speeds with blowing snow. Modelling calculations aiming to reproduce the wider regional or global impacts of ODEs, either via radiative effects or as a halogen source, will also need to account for high wind speed mechanisms. |
format |
Article in Journal/Newspaper |
author |
Jones, Anna E. Anderson, Philip S. Begoin, M. Brough, Neil Hutterli, Manuel A. Marshall, Gareth J. Richter, A. Roscoe, Howard K. Wolff, Eric W. |
author_facet |
Jones, Anna E. Anderson, Philip S. Begoin, M. Brough, Neil Hutterli, Manuel A. Marshall, Gareth J. Richter, A. Roscoe, Howard K. Wolff, Eric W. |
author_sort |
Jones, Anna E. |
title |
BrO, blizzards, and drivers of polar tropospheric ozone depletion events |
title_short |
BrO, blizzards, and drivers of polar tropospheric ozone depletion events |
title_full |
BrO, blizzards, and drivers of polar tropospheric ozone depletion events |
title_fullStr |
BrO, blizzards, and drivers of polar tropospheric ozone depletion events |
title_full_unstemmed |
BrO, blizzards, and drivers of polar tropospheric ozone depletion events |
title_sort |
bro, blizzards, and drivers of polar tropospheric ozone depletion events |
publisher |
Copernicus Publications |
publishDate |
2009 |
url |
http://nora.nerc.ac.uk/id/eprint/11072/ https://nora.nerc.ac.uk/id/eprint/11072/1/acp-9-4639-2009.pdf http://www.atmos-chem-phys.net/9/4639/2009/acp-9-4639-2009.html |
long_lat |
ENVELOPE(-26.541,-26.541,-75.581,-75.581) |
geographic |
Halley Station Weddell Weddell Sea |
geographic_facet |
Halley Station Weddell Weddell Sea |
genre |
Antarc* Antarctica Weddell Sea |
genre_facet |
Antarc* Antarctica Weddell Sea |
op_relation |
https://nora.nerc.ac.uk/id/eprint/11072/1/acp-9-4639-2009.pdf Jones, Anna E. orcid:0000-0002-2040-4841 Anderson, Philip S.; Begoin, M.; Brough, Neil orcid:0000-0002-2316-5292 Hutterli, Manuel A.; Marshall, Gareth J. orcid:0000-0001-8887-7314 Richter, A.; Roscoe, Howard K.; Wolff, Eric W. 2009 BrO, blizzards, and drivers of polar tropospheric ozone depletion events. Atmospheric Chemistry and Physics, 9 (14). 4639-4652. https://doi.org/10.5194/acp-9-4639-2009 <https://doi.org/10.5194/acp-9-4639-2009> |
op_doi |
https://doi.org/10.5194/acp-9-4639-2009 |
container_title |
Atmospheric Chemistry and Physics |
container_volume |
9 |
container_issue |
14 |
container_start_page |
4639 |
op_container_end_page |
4652 |
_version_ |
1766214375705673728 |