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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Language: | English |
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Online Access: | http://nldr.library.ucar.edu/repository/collections/OSGC-000-000-004-479 https://doi.org/10.5194/acp-12-1327-2012 |
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ftncar:oai:drupal-site.org:articles_11667 2023-09-05T13:17:33+02:00 Characterization of soluble bromide measurements and a case study of BrO observations during ARCTAS Liao, J. (author) Huey, L. (author) Scheuer, E. (author) Dibb, J. (author) Stickel, R. (author) Tanner, D. (author) Neuman, J. (author) Nowak, J. (author) Choi, S. (author) Wang, Y. (author) Salawitch, R. (author) Canty, T. (author) Chance, K. (author) Kurosu, T. (author) Suleiman, R. (author) Weinheimer, Andrew (author) Shetter, Richard (author) Fried, A. (author) Brune, W. (author) Anderson, B. (author) Zhang, X. (author) Chen, G. (author) Crawford, J. (author) Hecobian, A. (author) Ingall, E. (author) 2012-02-02 application/pdf http://nldr.library.ucar.edu/repository/collections/OSGC-000-000-004-479 https://doi.org/10.5194/acp-12-1327-2012 en eng Copernicus Publications Atmospheric Chemistry and Physics http://nldr.library.ucar.edu/repository/collections/OSGC-000-000-004-479 doi:10.5194/acp-12-1327-2012 ark:/85065/d7vt1sqg Copyright Author(s) 2012. This work is distributed under the Creative Commons Attribution 3.0 License. Text article 2012 ftncar https://doi.org/10.5194/acp-12-1327-2012 2023-08-14T18:42:42Z 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 (Br₂), 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 (R₂ = 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 (BrOVCD) derived from CIMS BrO observations compare well with BrOTROPVCD from OMI on 17 April 2008. Article in Journal/Newspaper Arctic OpenSky (NCAR/UCAR - National Center for Atmospheric Research/University Corporation for Atmospheric Research) Arctic Atmospheric Chemistry and Physics 12 3 1327 1338 |
institution |
Open Polar |
collection |
OpenSky (NCAR/UCAR - National Center for Atmospheric Research/University Corporation for Atmospheric Research) |
op_collection_id |
ftncar |
language |
English |
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 (Br₂), 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 (R₂ = 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 (BrOVCD) derived from CIMS BrO observations compare well with BrOTROPVCD from OMI on 17 April 2008. |
author2 |
Liao, J. (author) Huey, L. (author) Scheuer, E. (author) Dibb, J. (author) Stickel, R. (author) Tanner, D. (author) Neuman, J. (author) Nowak, J. (author) Choi, S. (author) Wang, Y. (author) Salawitch, R. (author) Canty, T. (author) Chance, K. (author) Kurosu, T. (author) Suleiman, R. (author) Weinheimer, Andrew (author) Shetter, Richard (author) Fried, A. (author) Brune, W. (author) Anderson, B. (author) Zhang, X. (author) Chen, G. (author) Crawford, J. (author) Hecobian, A. (author) Ingall, E. (author) |
format |
Article in Journal/Newspaper |
title |
Characterization of soluble bromide measurements and a case study of BrO observations during ARCTAS |
spellingShingle |
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 |
http://nldr.library.ucar.edu/repository/collections/OSGC-000-000-004-479 https://doi.org/10.5194/acp-12-1327-2012 |
geographic |
Arctic |
geographic_facet |
Arctic |
genre |
Arctic |
genre_facet |
Arctic |
op_relation |
Atmospheric Chemistry and Physics http://nldr.library.ucar.edu/repository/collections/OSGC-000-000-004-479 doi:10.5194/acp-12-1327-2012 ark:/85065/d7vt1sqg |
op_rights |
Copyright Author(s) 2012. This work is distributed under the Creative Commons Attribution 3.0 License. |
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 |
_version_ |
1776198682811564032 |