The role of blowing snow in the activation of bromine over first-year Antarctic sea ice
It is well known that during polar springtime halide sea salt ions, in particular Br-, are photochemically activated into reactive halogen species (e.g., Br and BrO), where they break down tropospheric ozone. This research investigated the role of blowing snow in transporting salts from the sea ice/...
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ftnonlinearchiv:oai:noa.gwlb.de:cop_mods_00044298 2023-05-15T13:55:42+02:00 The role of blowing snow in the activation of bromine over first-year Antarctic sea ice Lieb-Lappen, R. M. Obbard, R. W. 2015-07 electronic https://doi.org/10.5194/acp-15-7537-2015 https://noa.gwlb.de/receive/cop_mods_00044298 https://noa.gwlb.de/servlets/MCRFileNodeServlet/cop_derivate_00043918/acp-15-7537-2015.pdf https://acp.copernicus.org/articles/15/7537/2015/acp-15-7537-2015.pdf eng eng Copernicus Publications Atmospheric Chemistry and Physics -- http://www.atmos-chem-phys.net/volumes_and_issues.html -- http://www.bibliothek.uni-regensburg.de/ezeit/?2069847 -- 1680-7324 https://doi.org/10.5194/acp-15-7537-2015 https://noa.gwlb.de/receive/cop_mods_00044298 https://noa.gwlb.de/servlets/MCRFileNodeServlet/cop_derivate_00043918/acp-15-7537-2015.pdf https://acp.copernicus.org/articles/15/7537/2015/acp-15-7537-2015.pdf uneingeschränkt info:eu-repo/semantics/openAccess article Verlagsveröffentlichung article Text doc-type:article 2015 ftnonlinearchiv https://doi.org/10.5194/acp-15-7537-2015 2022-02-08T22:40:09Z It is well known that during polar springtime halide sea salt ions, in particular Br-, are photochemically activated into reactive halogen species (e.g., Br and BrO), where they break down tropospheric ozone. This research investigated the role of blowing snow in transporting salts from the sea ice/snow surface into reactive bromine species in the air. At two different locations over first-year ice in the Ross Sea, Antarctica, collection baskets captured blowing snow at different heights. In addition, sea ice cores and surface snow samples were collected throughout the month-long campaign. Over this time, sea ice and surface snow Br- / Cl- mass ratios remained constant and equivalent to seawater, and only in lofted snow did bromide become depleted relative to chloride. This suggests that replenishment of bromide in the snowpack occurs faster than bromine activation in mid-strength wind conditions (approximately 10 m s−1) or that blowing snow represents only a small portion of the surface snowpack. Additionally, lofted snow was found to be depleted in sulfate and enriched in nitrate relative to surface snow. Article in Journal/Newspaper Antarc* Antarctic Antarctica Ross Sea Sea ice Niedersächsisches Online-Archiv NOA Antarctic Ross Sea Atmospheric Chemistry and Physics 15 13 7537 7545 |
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English |
topic |
article Verlagsveröffentlichung |
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article Verlagsveröffentlichung Lieb-Lappen, R. M. Obbard, R. W. The role of blowing snow in the activation of bromine over first-year Antarctic sea ice |
topic_facet |
article Verlagsveröffentlichung |
description |
It is well known that during polar springtime halide sea salt ions, in particular Br-, are photochemically activated into reactive halogen species (e.g., Br and BrO), where they break down tropospheric ozone. This research investigated the role of blowing snow in transporting salts from the sea ice/snow surface into reactive bromine species in the air. At two different locations over first-year ice in the Ross Sea, Antarctica, collection baskets captured blowing snow at different heights. In addition, sea ice cores and surface snow samples were collected throughout the month-long campaign. Over this time, sea ice and surface snow Br- / Cl- mass ratios remained constant and equivalent to seawater, and only in lofted snow did bromide become depleted relative to chloride. This suggests that replenishment of bromide in the snowpack occurs faster than bromine activation in mid-strength wind conditions (approximately 10 m s−1) or that blowing snow represents only a small portion of the surface snowpack. Additionally, lofted snow was found to be depleted in sulfate and enriched in nitrate relative to surface snow. |
format |
Article in Journal/Newspaper |
author |
Lieb-Lappen, R. M. Obbard, R. W. |
author_facet |
Lieb-Lappen, R. M. Obbard, R. W. |
author_sort |
Lieb-Lappen, R. M. |
title |
The role of blowing snow in the activation of bromine over first-year Antarctic sea ice |
title_short |
The role of blowing snow in the activation of bromine over first-year Antarctic sea ice |
title_full |
The role of blowing snow in the activation of bromine over first-year Antarctic sea ice |
title_fullStr |
The role of blowing snow in the activation of bromine over first-year Antarctic sea ice |
title_full_unstemmed |
The role of blowing snow in the activation of bromine over first-year Antarctic sea ice |
title_sort |
role of blowing snow in the activation of bromine over first-year antarctic sea ice |
publisher |
Copernicus Publications |
publishDate |
2015 |
url |
https://doi.org/10.5194/acp-15-7537-2015 https://noa.gwlb.de/receive/cop_mods_00044298 https://noa.gwlb.de/servlets/MCRFileNodeServlet/cop_derivate_00043918/acp-15-7537-2015.pdf https://acp.copernicus.org/articles/15/7537/2015/acp-15-7537-2015.pdf |
geographic |
Antarctic Ross Sea |
geographic_facet |
Antarctic Ross Sea |
genre |
Antarc* Antarctic Antarctica Ross Sea Sea ice |
genre_facet |
Antarc* Antarctic Antarctica Ross Sea Sea ice |
op_relation |
Atmospheric Chemistry and Physics -- http://www.atmos-chem-phys.net/volumes_and_issues.html -- http://www.bibliothek.uni-regensburg.de/ezeit/?2069847 -- 1680-7324 https://doi.org/10.5194/acp-15-7537-2015 https://noa.gwlb.de/receive/cop_mods_00044298 https://noa.gwlb.de/servlets/MCRFileNodeServlet/cop_derivate_00043918/acp-15-7537-2015.pdf https://acp.copernicus.org/articles/15/7537/2015/acp-15-7537-2015.pdf |
op_rights |
uneingeschränkt info:eu-repo/semantics/openAccess |
op_doi |
https://doi.org/10.5194/acp-15-7537-2015 |
container_title |
Atmospheric Chemistry and Physics |
container_volume |
15 |
container_issue |
13 |
container_start_page |
7537 |
op_container_end_page |
7545 |
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1766262512021405696 |