Characterization of soluble bromide measurements and a case study of BrO observations during ARCTAS
A focus of the Arctic Research of the Composition of the Troposphere from Aircraft and Satellites (ARCTAS) mission was examination of bromine photochemistry in the spring time high latitude troposphere based on aircraft and satellite measurements of bromine oxide (BrO) and related species. The NASA...
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2012
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ftdoajarticles:oai:doaj.org/article:156620de730040c7aa1b801d8032e6ff 2023-05-15T15:11:05+02:00 Characterization of soluble bromide measurements and a case study of BrO observations during ARCTAS J. Liao L. G. Huey E. Scheuer J. E. Dibb R. E. Stickel D. J. Tanner J. A. Neuman J. B. Nowak S. Choi Y. Wang R. J. Salawitch T. Canty K. Chance T. Kurosu R. Suleiman A. J. Weinheimer R. E. Shetter A. Fried W. Brune B. Anderson X. Zhang G. Chen J. Crawford A. Hecobian E. D. Ingall 2012-02-01T00:00:00Z https://doi.org/10.5194/acp-12-1327-2012 https://doaj.org/article/156620de730040c7aa1b801d8032e6ff EN eng Copernicus Publications http://www.atmos-chem-phys.net/12/1327/2012/acp-12-1327-2012.pdf https://doaj.org/toc/1680-7316 https://doaj.org/toc/1680-7324 doi:10.5194/acp-12-1327-2012 1680-7316 1680-7324 https://doaj.org/article/156620de730040c7aa1b801d8032e6ff Atmospheric Chemistry and Physics, Vol 12, Iss 3, Pp 1327-1338 (2012) Physics QC1-999 Chemistry QD1-999 article 2012 ftdoajarticles https://doi.org/10.5194/acp-12-1327-2012 2022-12-30T22:28:43Z A focus of the Arctic Research of the Composition of the Troposphere from Aircraft and Satellites (ARCTAS) mission was examination of bromine photochemistry in the spring time high latitude troposphere based on aircraft and satellite measurements of bromine oxide (BrO) and related species. The NASA DC-8 aircraft utilized a chemical ionization mass spectrometer (CIMS) to measure BrO and a mist chamber (MC) to measure soluble bromide. We have determined that the MC detection efficiency to molecular bromine (Br 2 ), hypobromous acid (HOBr), bromine oxide (BrO), and hydrogen bromide (HBr) as soluble bromide (Br − ) was 0.9±0.1, 1.06+0.30/−0.35, 0.4±0.1, and 0.95±0.1, respectively. These efficiency factors were used to estimate soluble bromide levels along the DC-8 flight track of 17 April 2008 from photochemical calculations constrained to in situ BrO measured by CIMS. During this flight, the highest levels of soluble bromide and BrO were observed and atmospheric conditions were ideal for the space-borne observation of BrO. The good agreement ( R 2 = 0.76; slope = 0.95; intercept = −3.4 pmol mol −1 ) between modeled and observed soluble bromide, when BrO was above detection limit (>2 pmol mol −1 ) under unpolluted conditions (NO<10 pmol mol −1 ), indicates that the CIMS BrO measurements were consistent with the MC soluble bromide and that a well characterized MC can be used to derive mixing ratios of some reactive bromine compounds. Tropospheric BrO vertical column densities (BrO VCD ) derived from CIMS BrO observations compare well with BrO TROP VCD from OMI on 17 April 2008. Article in Journal/Newspaper Arctic Directory of Open Access Journals: DOAJ Articles Arctic Atmospheric Chemistry and Physics 12 3 1327 1338 |
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 J. Liao L. G. Huey E. Scheuer J. E. Dibb R. E. Stickel D. J. Tanner J. A. Neuman J. B. Nowak S. Choi Y. Wang R. J. Salawitch T. Canty K. Chance T. Kurosu R. Suleiman A. J. Weinheimer R. E. Shetter A. Fried W. Brune B. Anderson X. Zhang G. Chen J. Crawford A. Hecobian E. D. Ingall Characterization of soluble bromide measurements and a case study of BrO observations during ARCTAS |
topic_facet |
Physics QC1-999 Chemistry QD1-999 |
description |
A focus of the Arctic Research of the Composition of the Troposphere from Aircraft and Satellites (ARCTAS) mission was examination of bromine photochemistry in the spring time high latitude troposphere based on aircraft and satellite measurements of bromine oxide (BrO) and related species. The NASA DC-8 aircraft utilized a chemical ionization mass spectrometer (CIMS) to measure BrO and a mist chamber (MC) to measure soluble bromide. We have determined that the MC detection efficiency to molecular bromine (Br 2 ), hypobromous acid (HOBr), bromine oxide (BrO), and hydrogen bromide (HBr) as soluble bromide (Br − ) was 0.9±0.1, 1.06+0.30/−0.35, 0.4±0.1, and 0.95±0.1, respectively. These efficiency factors were used to estimate soluble bromide levels along the DC-8 flight track of 17 April 2008 from photochemical calculations constrained to in situ BrO measured by CIMS. During this flight, the highest levels of soluble bromide and BrO were observed and atmospheric conditions were ideal for the space-borne observation of BrO. The good agreement ( R 2 = 0.76; slope = 0.95; intercept = −3.4 pmol mol −1 ) between modeled and observed soluble bromide, when BrO was above detection limit (>2 pmol mol −1 ) under unpolluted conditions (NO<10 pmol mol −1 ), indicates that the CIMS BrO measurements were consistent with the MC soluble bromide and that a well characterized MC can be used to derive mixing ratios of some reactive bromine compounds. Tropospheric BrO vertical column densities (BrO VCD ) derived from CIMS BrO observations compare well with BrO TROP VCD from OMI on 17 April 2008. |
format |
Article in Journal/Newspaper |
author |
J. Liao L. G. Huey E. Scheuer J. E. Dibb R. E. Stickel D. J. Tanner J. A. Neuman J. B. Nowak S. Choi Y. Wang R. J. Salawitch T. Canty K. Chance T. Kurosu R. Suleiman A. J. Weinheimer R. E. Shetter A. Fried W. Brune B. Anderson X. Zhang G. Chen J. Crawford A. Hecobian E. D. Ingall |
author_facet |
J. Liao L. G. Huey E. Scheuer J. E. Dibb R. E. Stickel D. J. Tanner J. A. Neuman J. B. Nowak S. Choi Y. Wang R. J. Salawitch T. Canty K. Chance T. Kurosu R. Suleiman A. J. Weinheimer R. E. Shetter A. Fried W. Brune B. Anderson X. Zhang G. Chen J. Crawford A. Hecobian E. D. Ingall |
author_sort |
J. Liao |
title |
Characterization of soluble bromide measurements and a case study of BrO observations during ARCTAS |
title_short |
Characterization of soluble bromide measurements and a case study of BrO observations during ARCTAS |
title_full |
Characterization of soluble bromide measurements and a case study of BrO observations during ARCTAS |
title_fullStr |
Characterization of soluble bromide measurements and a case study of BrO observations during ARCTAS |
title_full_unstemmed |
Characterization of soluble bromide measurements and a case study of BrO observations during ARCTAS |
title_sort |
characterization of soluble bromide measurements and a case study of bro observations during arctas |
publisher |
Copernicus Publications |
publishDate |
2012 |
url |
https://doi.org/10.5194/acp-12-1327-2012 https://doaj.org/article/156620de730040c7aa1b801d8032e6ff |
geographic |
Arctic |
geographic_facet |
Arctic |
genre |
Arctic |
genre_facet |
Arctic |
op_source |
Atmospheric Chemistry and Physics, Vol 12, Iss 3, Pp 1327-1338 (2012) |
op_relation |
http://www.atmos-chem-phys.net/12/1327/2012/acp-12-1327-2012.pdf https://doaj.org/toc/1680-7316 https://doaj.org/toc/1680-7324 doi:10.5194/acp-12-1327-2012 1680-7316 1680-7324 https://doaj.org/article/156620de730040c7aa1b801d8032e6ff |
op_doi |
https://doi.org/10.5194/acp-12-1327-2012 |
container_title |
Atmospheric Chemistry and Physics |
container_volume |
12 |
container_issue |
3 |
container_start_page |
1327 |
op_container_end_page |
1338 |
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1766341990756122624 |