First-year sea-ice contact predicts bromine monoxide (BrO) levels at Barrow, Alaska better than potential frost flower contact
International audience 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, an...
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ftinsu:oai:HAL:hal-00296138v1 2023-11-12T04:13:09+01:00 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. Geophysical Institute and Department of Chemistry University of Alaska Fairbanks (UAF) Institute of Environmental Physics Heidelberg (IUP) Universität Heidelberg Heidelberg = Heidelberg University ERDC Cold Regions Research and Engineering Laboratory (CRREL) USACE Engineer Research and Development Center (ERDC) 2007-02-09 https://hal.science/hal-00296138 https://hal.science/hal-00296138/document https://hal.science/hal-00296138/file/acp-7-621-2007.pdf en eng HAL CCSD European Geosciences Union hal-00296138 https://hal.science/hal-00296138 https://hal.science/hal-00296138/document https://hal.science/hal-00296138/file/acp-7-621-2007.pdf info:eu-repo/semantics/OpenAccess ISSN: 1680-7316 EISSN: 1680-7324 Atmospheric Chemistry and Physics https://hal.science/hal-00296138 Atmospheric Chemistry and Physics, 2007, 7 (3), pp.621-627 [SDU.OCEAN]Sciences of the Universe [physics]/Ocean Atmosphere info:eu-repo/semantics/article Journal articles 2007 ftinsu 2023-10-25T16:29:35Z International audience 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 (R 2 =0.55), and essentially uncorrelated with potential frost flower (PFF) contact (R 2 =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 Institut national des sciences de l'Univers: HAL-INSU Arctic |
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Institut national des sciences de l'Univers: HAL-INSU |
op_collection_id |
ftinsu |
language |
English |
topic |
[SDU.OCEAN]Sciences of the Universe [physics]/Ocean Atmosphere |
spellingShingle |
[SDU.OCEAN]Sciences of the Universe [physics]/Ocean Atmosphere 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 |
[SDU.OCEAN]Sciences of the Universe [physics]/Ocean Atmosphere |
description |
International audience 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 (R 2 =0.55), and essentially uncorrelated with potential frost flower (PFF) contact (R 2 =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. |
author2 |
Geophysical Institute and Department of Chemistry University of Alaska Fairbanks (UAF) Institute of Environmental Physics Heidelberg (IUP) Universität Heidelberg Heidelberg = Heidelberg University ERDC Cold Regions Research and Engineering Laboratory (CRREL) USACE Engineer Research and Development Center (ERDC) |
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 |
HAL CCSD |
publishDate |
2007 |
url |
https://hal.science/hal-00296138 https://hal.science/hal-00296138/document https://hal.science/hal-00296138/file/acp-7-621-2007.pdf |
geographic |
Arctic |
geographic_facet |
Arctic |
genre |
Arctic Barrow Sea ice Alaska |
genre_facet |
Arctic Barrow Sea ice Alaska |
op_source |
ISSN: 1680-7316 EISSN: 1680-7324 Atmospheric Chemistry and Physics https://hal.science/hal-00296138 Atmospheric Chemistry and Physics, 2007, 7 (3), pp.621-627 |
op_relation |
hal-00296138 https://hal.science/hal-00296138 https://hal.science/hal-00296138/document https://hal.science/hal-00296138/file/acp-7-621-2007.pdf |
op_rights |
info:eu-repo/semantics/OpenAccess |
_version_ |
1782331305426419712 |