DMS and MSA measurements in the Antarctic boundary layer: impact of BrO on MSA production
International audience In situ measurements of dimethyl sulphide (DMS) and methane sulphonic acid (MSA) were made at Halley Station, Antarctica (75°35´S, 26°19W) during February 2004?February 2005 as part of the CHABLIS (Chemistry of the Antarctic boundary layer and the interface with snow) project....
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ftinsu:oai:HAL:hal-00303965v1 2023-11-12T04:04:53+01:00 DMS and MSA measurements in the Antarctic boundary layer: impact of BrO on MSA production Read, K. A. Lewis, A. C. Bauguitte, S. Rankin, A. M. Salmon, R. A. Wolff, E. W. Saiz-Lopez, A. Bloss, W. J. Heard, D. E. Lee, J. D. Plane, J. M. C. Department of Chemistry York, UK University of York York, UK British Antarctic Survey (BAS) Natural Environment Research Council (NERC) Jet Propulsion Laboratory (JPL) NASA-California Institute of Technology (CALTECH) School of Geography Earth & Environmental Sciences Department of Chemistry 2008-02-08 https://hal.science/hal-00303965 https://hal.science/hal-00303965/document https://hal.science/hal-00303965/file/acpd-8-2657-2008.pdf en eng HAL CCSD European Geosciences Union hal-00303965 https://hal.science/hal-00303965 https://hal.science/hal-00303965/document https://hal.science/hal-00303965/file/acpd-8-2657-2008.pdf info:eu-repo/semantics/OpenAccess ISSN: 1680-7367 EISSN: 1680-7375 Atmospheric Chemistry and Physics Discussions https://hal.science/hal-00303965 Atmospheric Chemistry and Physics Discussions, 2008, 8 (1), pp.2657-2694 [SDU.OCEAN]Sciences of the Universe [physics]/Ocean Atmosphere info:eu-repo/semantics/article Journal articles 2008 ftinsu 2023-10-25T16:26:15Z International audience In situ measurements of dimethyl sulphide (DMS) and methane sulphonic acid (MSA) were made at Halley Station, Antarctica (75°35´S, 26°19W) during February 2004?February 2005 as part of the CHABLIS (Chemistry of the Antarctic boundary layer and the interface with snow) project. DMS was present in the atmosphere at Halley all year (average 38.1±43 pptV) with a maximum monthly average value of 113.6±52 pptV in February 2004 coinciding temporally with a minimum in sea extent. Whilst seasonal variability and interannual variability can be attributed to a number of factors, short term variability appeared strongly dependent on air mass origin and trajectory pressure height. The MSA and derived non-sea salt sulphate (nss-SO 4 2? ) measurements showed no correlation with those of DMS (regression R 2 =0.039, and R 2 =0.001, respectively) in-line with the complexity of DMS fluxes, conflicting oxidation routes, transport of air masses and variable spatial coverage of both sea-ice and phytoplankton. MSA was generally low throughout the year, with an annual average of 42 ng m ?3 (9.8±13.2 pptV), however MSA: nss-SO 4 2? ratios were high implying a dominance of the addition oxidation route for DMS. Including BrO measurements into MSA production calculations demonstrated the significance of BrO on DMS oxidation within this region of the atmosphere in austral summer. Assuming an 80% yield of DMSO from the reaction of DMS+BrO, an atmospheric concentration of BrO equal to 3 pptV increased the calculated MSA production from DMS by a factor of 9 above that obtained when considering only reaction with the hydroxyl radical. Article in Journal/Newspaper Antarc* Antarctic Antarctica Sea ice Institut national des sciences de l'Univers: HAL-INSU Antarctic Austral Halley Station ENVELOPE(-26.541,-26.541,-75.581,-75.581) The Antarctic |
institution |
Open Polar |
collection |
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 Read, K. A. Lewis, A. C. Bauguitte, S. Rankin, A. M. Salmon, R. A. Wolff, E. W. Saiz-Lopez, A. Bloss, W. J. Heard, D. E. Lee, J. D. Plane, J. M. C. DMS and MSA measurements in the Antarctic boundary layer: impact of BrO on MSA production |
topic_facet |
[SDU.OCEAN]Sciences of the Universe [physics]/Ocean Atmosphere |
description |
International audience In situ measurements of dimethyl sulphide (DMS) and methane sulphonic acid (MSA) were made at Halley Station, Antarctica (75°35´S, 26°19W) during February 2004?February 2005 as part of the CHABLIS (Chemistry of the Antarctic boundary layer and the interface with snow) project. DMS was present in the atmosphere at Halley all year (average 38.1±43 pptV) with a maximum monthly average value of 113.6±52 pptV in February 2004 coinciding temporally with a minimum in sea extent. Whilst seasonal variability and interannual variability can be attributed to a number of factors, short term variability appeared strongly dependent on air mass origin and trajectory pressure height. The MSA and derived non-sea salt sulphate (nss-SO 4 2? ) measurements showed no correlation with those of DMS (regression R 2 =0.039, and R 2 =0.001, respectively) in-line with the complexity of DMS fluxes, conflicting oxidation routes, transport of air masses and variable spatial coverage of both sea-ice and phytoplankton. MSA was generally low throughout the year, with an annual average of 42 ng m ?3 (9.8±13.2 pptV), however MSA: nss-SO 4 2? ratios were high implying a dominance of the addition oxidation route for DMS. Including BrO measurements into MSA production calculations demonstrated the significance of BrO on DMS oxidation within this region of the atmosphere in austral summer. Assuming an 80% yield of DMSO from the reaction of DMS+BrO, an atmospheric concentration of BrO equal to 3 pptV increased the calculated MSA production from DMS by a factor of 9 above that obtained when considering only reaction with the hydroxyl radical. |
author2 |
Department of Chemistry York, UK University of York York, UK British Antarctic Survey (BAS) Natural Environment Research Council (NERC) Jet Propulsion Laboratory (JPL) NASA-California Institute of Technology (CALTECH) School of Geography Earth & Environmental Sciences Department of Chemistry |
format |
Article in Journal/Newspaper |
author |
Read, K. A. Lewis, A. C. Bauguitte, S. Rankin, A. M. Salmon, R. A. Wolff, E. W. Saiz-Lopez, A. Bloss, W. J. Heard, D. E. Lee, J. D. Plane, J. M. C. |
author_facet |
Read, K. A. Lewis, A. C. Bauguitte, S. Rankin, A. M. Salmon, R. A. Wolff, E. W. Saiz-Lopez, A. Bloss, W. J. Heard, D. E. Lee, J. D. Plane, J. M. C. |
author_sort |
Read, K. A. |
title |
DMS and MSA measurements in the Antarctic boundary layer: impact of BrO on MSA production |
title_short |
DMS and MSA measurements in the Antarctic boundary layer: impact of BrO on MSA production |
title_full |
DMS and MSA measurements in the Antarctic boundary layer: impact of BrO on MSA production |
title_fullStr |
DMS and MSA measurements in the Antarctic boundary layer: impact of BrO on MSA production |
title_full_unstemmed |
DMS and MSA measurements in the Antarctic boundary layer: impact of BrO on MSA production |
title_sort |
dms and msa measurements in the antarctic boundary layer: impact of bro on msa production |
publisher |
HAL CCSD |
publishDate |
2008 |
url |
https://hal.science/hal-00303965 https://hal.science/hal-00303965/document https://hal.science/hal-00303965/file/acpd-8-2657-2008.pdf |
long_lat |
ENVELOPE(-26.541,-26.541,-75.581,-75.581) |
geographic |
Antarctic Austral Halley Station The Antarctic |
geographic_facet |
Antarctic Austral Halley Station The Antarctic |
genre |
Antarc* Antarctic Antarctica Sea ice |
genre_facet |
Antarc* Antarctic Antarctica Sea ice |
op_source |
ISSN: 1680-7367 EISSN: 1680-7375 Atmospheric Chemistry and Physics Discussions https://hal.science/hal-00303965 Atmospheric Chemistry and Physics Discussions, 2008, 8 (1), pp.2657-2694 |
op_relation |
hal-00303965 https://hal.science/hal-00303965 https://hal.science/hal-00303965/document https://hal.science/hal-00303965/file/acpd-8-2657-2008.pdf |
op_rights |
info:eu-repo/semantics/OpenAccess |
_version_ |
1782341801218146304 |