BrO measurements over the Eastern North-Atlantic
The aim of the work presented here was to detect BrO in the marine boundary layer over the Eastern North-Atlantic by Multi AXis-Differential Optical Absorption Spectroscopy (MAX-DOAS) of scattered sunlight. With this technique, information about the concentration and the vertical profile of trace ga...
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ftcopernicus:oai:publications.copernicus.org:acp5682 2023-05-15T17:30:35+02:00 BrO measurements over the Eastern North-Atlantic Martin, M. Pöhler, D. Seitz, K. Sinreich, R. Platt, U. 2018-01-15 application/pdf https://doi.org/10.5194/acp-9-9545-2009 https://www.atmos-chem-phys.net/9/9545/2009/ eng eng doi:10.5194/acp-9-9545-2009 https://www.atmos-chem-phys.net/9/9545/2009/ eISSN: 1680-7324 Text 2018 ftcopernicus https://doi.org/10.5194/acp-9-9545-2009 2019-12-24T09:57:35Z The aim of the work presented here was to detect BrO in the marine boundary layer over the Eastern North-Atlantic by Multi AXis-Differential Optical Absorption Spectroscopy (MAX-DOAS) of scattered sunlight. With this technique, information about the concentration and the vertical profile of trace gases in the atmosphere can be gained. BrO can be formed in the marine atmosphere by degradation of biogenic organohalogens or by oxidation of bromide in sea salt aerosol. BrO influences the chemistry in marine air in many ways, e.g. since it catalytically destroys ozone, changes the NO 2 /NO-ratio as well as the OH/HO 2 -ratio and oxidises DMS. However, the abundance and the significance of BrO in the marine atmosphere is not yet fully understood. We report on data collected during a ship cruise, which took place along the West African Coast in February 2007, within the framework of the Surface Ocean PRocesses in the ANthropocene project (SOPRAN). Tropospheric BrO could be detected during this cruise at peak mixing ratios of (10.2±3.7) ppt at an assumed layer height of 1 km on 18 February 2007. Furthermore, it was found that the mean BrO concentrations increased when cruising close to the African Coast suggesting that at least part of the BrO might have originated from there. Text North Atlantic Copernicus Publications: E-Journals Atmospheric Chemistry and Physics 9 24 9545 9554 |
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Copernicus Publications: E-Journals |
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ftcopernicus |
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English |
description |
The aim of the work presented here was to detect BrO in the marine boundary layer over the Eastern North-Atlantic by Multi AXis-Differential Optical Absorption Spectroscopy (MAX-DOAS) of scattered sunlight. With this technique, information about the concentration and the vertical profile of trace gases in the atmosphere can be gained. BrO can be formed in the marine atmosphere by degradation of biogenic organohalogens or by oxidation of bromide in sea salt aerosol. BrO influences the chemistry in marine air in many ways, e.g. since it catalytically destroys ozone, changes the NO 2 /NO-ratio as well as the OH/HO 2 -ratio and oxidises DMS. However, the abundance and the significance of BrO in the marine atmosphere is not yet fully understood. We report on data collected during a ship cruise, which took place along the West African Coast in February 2007, within the framework of the Surface Ocean PRocesses in the ANthropocene project (SOPRAN). Tropospheric BrO could be detected during this cruise at peak mixing ratios of (10.2±3.7) ppt at an assumed layer height of 1 km on 18 February 2007. Furthermore, it was found that the mean BrO concentrations increased when cruising close to the African Coast suggesting that at least part of the BrO might have originated from there. |
format |
Text |
author |
Martin, M. Pöhler, D. Seitz, K. Sinreich, R. Platt, U. |
spellingShingle |
Martin, M. Pöhler, D. Seitz, K. Sinreich, R. Platt, U. BrO measurements over the Eastern North-Atlantic |
author_facet |
Martin, M. Pöhler, D. Seitz, K. Sinreich, R. Platt, U. |
author_sort |
Martin, M. |
title |
BrO measurements over the Eastern North-Atlantic |
title_short |
BrO measurements over the Eastern North-Atlantic |
title_full |
BrO measurements over the Eastern North-Atlantic |
title_fullStr |
BrO measurements over the Eastern North-Atlantic |
title_full_unstemmed |
BrO measurements over the Eastern North-Atlantic |
title_sort |
bro measurements over the eastern north-atlantic |
publishDate |
2018 |
url |
https://doi.org/10.5194/acp-9-9545-2009 https://www.atmos-chem-phys.net/9/9545/2009/ |
genre |
North Atlantic |
genre_facet |
North Atlantic |
op_source |
eISSN: 1680-7324 |
op_relation |
doi:10.5194/acp-9-9545-2009 https://www.atmos-chem-phys.net/9/9545/2009/ |
op_doi |
https://doi.org/10.5194/acp-9-9545-2009 |
container_title |
Atmospheric Chemistry and Physics |
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9 |
container_issue |
24 |
container_start_page |
9545 |
op_container_end_page |
9554 |
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1766127438072381440 |