Observations and source investigations of the boundary layer bromine monoxide (BrO) in the Ny-Ålesund Arctic
During polar spring, the presence of reactive bromine in the polar boundary layer is considered to be the main cause of ozone depletion and mercury deposition. However, many uncertainties still remain regarding understanding the mechanisms of the chemical process and source of the bromine. As Arctic...
Published in: | Atmospheric Chemistry and Physics |
---|---|
Main Authors: | , , , , , |
Format: | Article in Journal/Newspaper |
Language: | English |
Published: |
Copernicus Publications
2018
|
Subjects: | |
Online Access: | https://doi.org/10.5194/acp-18-9789-2018 https://doaj.org/article/478efb07204d4262bc9f6ba6360a63bd |
id |
ftdoajarticles:oai:doaj.org/article:478efb07204d4262bc9f6ba6360a63bd |
---|---|
record_format |
openpolar |
spelling |
ftdoajarticles:oai:doaj.org/article:478efb07204d4262bc9f6ba6360a63bd 2023-05-15T14:58:40+02:00 Observations and source investigations of the boundary layer bromine monoxide (BrO) in the Ny-Ålesund Arctic Y. Luo F. Si H. Zhou K. Dou Y. Liu W. Liu 2018-07-01T00:00:00Z https://doi.org/10.5194/acp-18-9789-2018 https://doaj.org/article/478efb07204d4262bc9f6ba6360a63bd EN eng Copernicus Publications https://www.atmos-chem-phys.net/18/9789/2018/acp-18-9789-2018.pdf https://doaj.org/toc/1680-7316 https://doaj.org/toc/1680-7324 doi:10.5194/acp-18-9789-2018 1680-7316 1680-7324 https://doaj.org/article/478efb07204d4262bc9f6ba6360a63bd Atmospheric Chemistry and Physics, Vol 18, Pp 9789-9801 (2018) Physics QC1-999 Chemistry QD1-999 article 2018 ftdoajarticles https://doi.org/10.5194/acp-18-9789-2018 2022-12-31T13:43:22Z During polar spring, the presence of reactive bromine in the polar boundary layer is considered to be the main cause of ozone depletion and mercury deposition. However, many uncertainties still remain regarding understanding the mechanisms of the chemical process and source of the bromine. As Arctic sea ice has recently been dramatically reduced, it is critical to investigate the mechanisms using more accurate measurements with higher temporal and spatial resolution. In this study, a typical process of enhanced bromine and depleted ozone in the Ny-Ålesund boundary layer in late April 2015 was observed by applying ground-based multi-axis differential optical absorption spectroscopy (MAX-DOAS) technique. The results showed that there were bromine monoxide (BrO) slant columns as high as 5.6 × 10 14 molec cm −2 above the Kings Bay area on 26 April. Meanwhile, the boundary layer ozone and gaseous elemental mercury (GEM) were synchronously reduced by 85 and 90 %, respectively. Based on the meteorology, sea ice distribution and air mass history, the sea ice in the Kings Bay area, which emerged for only a very short period of time when the enhanced BrO was observed, was considered to be the major source of this bromine enhancement event. The oxidized GEM may be directly deposited onto snow/ice and thereby influence the polar ecosystem. Article in Journal/Newspaper Arctic Ny Ålesund Ny-Ålesund Sea ice Directory of Open Access Journals: DOAJ Articles Arctic Kings Bay ENVELOPE(-117.760,-117.760,70.731,70.731) Ny-Ålesund Atmospheric Chemistry and Physics 18 13 9789 9801 |
institution |
Open Polar |
collection |
Directory of Open Access Journals: DOAJ Articles |
op_collection_id |
ftdoajarticles |
language |
English |
topic |
Physics QC1-999 Chemistry QD1-999 |
spellingShingle |
Physics QC1-999 Chemistry QD1-999 Y. Luo F. Si H. Zhou K. Dou Y. Liu W. Liu Observations and source investigations of the boundary layer bromine monoxide (BrO) in the Ny-Ålesund Arctic |
topic_facet |
Physics QC1-999 Chemistry QD1-999 |
description |
During polar spring, the presence of reactive bromine in the polar boundary layer is considered to be the main cause of ozone depletion and mercury deposition. However, many uncertainties still remain regarding understanding the mechanisms of the chemical process and source of the bromine. As Arctic sea ice has recently been dramatically reduced, it is critical to investigate the mechanisms using more accurate measurements with higher temporal and spatial resolution. In this study, a typical process of enhanced bromine and depleted ozone in the Ny-Ålesund boundary layer in late April 2015 was observed by applying ground-based multi-axis differential optical absorption spectroscopy (MAX-DOAS) technique. The results showed that there were bromine monoxide (BrO) slant columns as high as 5.6 × 10 14 molec cm −2 above the Kings Bay area on 26 April. Meanwhile, the boundary layer ozone and gaseous elemental mercury (GEM) were synchronously reduced by 85 and 90 %, respectively. Based on the meteorology, sea ice distribution and air mass history, the sea ice in the Kings Bay area, which emerged for only a very short period of time when the enhanced BrO was observed, was considered to be the major source of this bromine enhancement event. The oxidized GEM may be directly deposited onto snow/ice and thereby influence the polar ecosystem. |
format |
Article in Journal/Newspaper |
author |
Y. Luo F. Si H. Zhou K. Dou Y. Liu W. Liu |
author_facet |
Y. Luo F. Si H. Zhou K. Dou Y. Liu W. Liu |
author_sort |
Y. Luo |
title |
Observations and source investigations of the boundary layer bromine monoxide (BrO) in the Ny-Ålesund Arctic |
title_short |
Observations and source investigations of the boundary layer bromine monoxide (BrO) in the Ny-Ålesund Arctic |
title_full |
Observations and source investigations of the boundary layer bromine monoxide (BrO) in the Ny-Ålesund Arctic |
title_fullStr |
Observations and source investigations of the boundary layer bromine monoxide (BrO) in the Ny-Ålesund Arctic |
title_full_unstemmed |
Observations and source investigations of the boundary layer bromine monoxide (BrO) in the Ny-Ålesund Arctic |
title_sort |
observations and source investigations of the boundary layer bromine monoxide (bro) in the ny-ålesund arctic |
publisher |
Copernicus Publications |
publishDate |
2018 |
url |
https://doi.org/10.5194/acp-18-9789-2018 https://doaj.org/article/478efb07204d4262bc9f6ba6360a63bd |
long_lat |
ENVELOPE(-117.760,-117.760,70.731,70.731) |
geographic |
Arctic Kings Bay Ny-Ålesund |
geographic_facet |
Arctic Kings Bay Ny-Ålesund |
genre |
Arctic Ny Ålesund Ny-Ålesund Sea ice |
genre_facet |
Arctic Ny Ålesund Ny-Ålesund Sea ice |
op_source |
Atmospheric Chemistry and Physics, Vol 18, Pp 9789-9801 (2018) |
op_relation |
https://www.atmos-chem-phys.net/18/9789/2018/acp-18-9789-2018.pdf https://doaj.org/toc/1680-7316 https://doaj.org/toc/1680-7324 doi:10.5194/acp-18-9789-2018 1680-7316 1680-7324 https://doaj.org/article/478efb07204d4262bc9f6ba6360a63bd |
op_doi |
https://doi.org/10.5194/acp-18-9789-2018 |
container_title |
Atmospheric Chemistry and Physics |
container_volume |
18 |
container_issue |
13 |
container_start_page |
9789 |
op_container_end_page |
9801 |
_version_ |
1766330796255215616 |