First-year sea-ice contact predicts bromine monoxide (BrO) levels at Barrow, Alaska better than potential frost flower contact
Reactive halogens are responsible for boundary-layer ozone depletion and mercury deposition in Polar Regions during springtime. To investigate the source of reactive halogens in the air arriving at Barrow, Alaska, we measured BrO, an indicator of reactive halogen chemistry, and correlated its abunda...
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ftnonlinearchiv:oai:noa.gwlb.de:cop_mods_00048644 2023-05-15T15:06:31+02:00 First-year sea-ice contact predicts bromine monoxide (BrO) levels at Barrow, Alaska better than potential frost flower contact Simpson, W. R. Carlson, D. Hönninger, G. Douglas, T. A. Sturm, M. Perovich, D. Platt, U. 2007-02 electronic https://doi.org/10.5194/acp-7-621-2007 https://noa.gwlb.de/receive/cop_mods_00048644 https://noa.gwlb.de/servlets/MCRFileNodeServlet/cop_derivate_00048264/acp-7-621-2007.pdf https://acp.copernicus.org/articles/7/621/2007/acp-7-621-2007.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-7-621-2007 https://noa.gwlb.de/receive/cop_mods_00048644 https://noa.gwlb.de/servlets/MCRFileNodeServlet/cop_derivate_00048264/acp-7-621-2007.pdf https://acp.copernicus.org/articles/7/621/2007/acp-7-621-2007.pdf https://open-access.net/ uneingeschränkt info:eu-repo/semantics/openAccess article Verlagsveröffentlichung article Text doc-type:article 2007 ftnonlinearchiv https://doi.org/10.5194/acp-7-621-2007 2022-02-08T22:37:53Z Reactive halogens are responsible for boundary-layer ozone depletion and mercury deposition in Polar Regions during springtime. To investigate the source of reactive halogens in the air arriving at Barrow, Alaska, we measured BrO, an indicator of reactive halogen chemistry, and correlated its abundance with airmass histories derived from meteorological back trajectories and remotely sensed sea ice properties. The BrO abundance is found to be positively correlated to first-year sea-ice contact (R2=0.55), and essentially uncorrelated with potential frost flower (PFF) contact (R2=0.04). Assuming that PFF accurately predicts frost flowers, these data indicate that snow and ice contaminated with sea salts on first-year sea ice is a more probable bromine source than are frost flowers, for airmasses impacting Barrow, Alaska. Climate-driven changes in Arctic sea ice are likely to alter frost flower and first year sea ice prevalence. An accurate understanding of how these sea ice changes would affect the halogen chemistry of the overlying atmosphere depends upon understanding the relative roles of frost flowers and saline snow and ice surfaces as reactive bromine sources. Article in Journal/Newspaper Arctic Barrow Sea ice Alaska Niedersächsisches Online-Archiv NOA Arctic Atmospheric Chemistry and Physics 7 3 621 627 |
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Niedersächsisches Online-Archiv NOA |
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ftnonlinearchiv |
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English |
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article Verlagsveröffentlichung |
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article Verlagsveröffentlichung Simpson, W. R. Carlson, D. Hönninger, G. Douglas, T. A. Sturm, M. Perovich, D. Platt, U. First-year sea-ice contact predicts bromine monoxide (BrO) levels at Barrow, Alaska better than potential frost flower contact |
topic_facet |
article Verlagsveröffentlichung |
description |
Reactive halogens are responsible for boundary-layer ozone depletion and mercury deposition in Polar Regions during springtime. To investigate the source of reactive halogens in the air arriving at Barrow, Alaska, we measured BrO, an indicator of reactive halogen chemistry, and correlated its abundance with airmass histories derived from meteorological back trajectories and remotely sensed sea ice properties. The BrO abundance is found to be positively correlated to first-year sea-ice contact (R2=0.55), and essentially uncorrelated with potential frost flower (PFF) contact (R2=0.04). Assuming that PFF accurately predicts frost flowers, these data indicate that snow and ice contaminated with sea salts on first-year sea ice is a more probable bromine source than are frost flowers, for airmasses impacting Barrow, Alaska. Climate-driven changes in Arctic sea ice are likely to alter frost flower and first year sea ice prevalence. An accurate understanding of how these sea ice changes would affect the halogen chemistry of the overlying atmosphere depends upon understanding the relative roles of frost flowers and saline snow and ice surfaces as reactive bromine sources. |
format |
Article in Journal/Newspaper |
author |
Simpson, W. R. Carlson, D. Hönninger, G. Douglas, T. A. Sturm, M. Perovich, D. Platt, U. |
author_facet |
Simpson, W. R. Carlson, D. Hönninger, G. Douglas, T. A. Sturm, M. Perovich, D. Platt, U. |
author_sort |
Simpson, W. R. |
title |
First-year sea-ice contact predicts bromine monoxide (BrO) levels at Barrow, Alaska better than potential frost flower contact |
title_short |
First-year sea-ice contact predicts bromine monoxide (BrO) levels at Barrow, Alaska better than potential frost flower contact |
title_full |
First-year sea-ice contact predicts bromine monoxide (BrO) levels at Barrow, Alaska better than potential frost flower contact |
title_fullStr |
First-year sea-ice contact predicts bromine monoxide (BrO) levels at Barrow, Alaska better than potential frost flower contact |
title_full_unstemmed |
First-year sea-ice contact predicts bromine monoxide (BrO) levels at Barrow, Alaska better than potential frost flower contact |
title_sort |
first-year sea-ice contact predicts bromine monoxide (bro) levels at barrow, alaska better than potential frost flower contact |
publisher |
Copernicus Publications |
publishDate |
2007 |
url |
https://doi.org/10.5194/acp-7-621-2007 https://noa.gwlb.de/receive/cop_mods_00048644 https://noa.gwlb.de/servlets/MCRFileNodeServlet/cop_derivate_00048264/acp-7-621-2007.pdf https://acp.copernicus.org/articles/7/621/2007/acp-7-621-2007.pdf |
geographic |
Arctic |
geographic_facet |
Arctic |
genre |
Arctic Barrow Sea ice Alaska |
genre_facet |
Arctic Barrow Sea ice Alaska |
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-7-621-2007 https://noa.gwlb.de/receive/cop_mods_00048644 https://noa.gwlb.de/servlets/MCRFileNodeServlet/cop_derivate_00048264/acp-7-621-2007.pdf https://acp.copernicus.org/articles/7/621/2007/acp-7-621-2007.pdf |
op_rights |
https://open-access.net/ uneingeschränkt info:eu-repo/semantics/openAccess |
op_doi |
https://doi.org/10.5194/acp-7-621-2007 |
container_title |
Atmospheric Chemistry and Physics |
container_volume |
7 |
container_issue |
3 |
container_start_page |
621 |
op_container_end_page |
627 |
_version_ |
1766338102890070016 |