Aerosol composition and sources in the central Arctic Ocean during ASCOS
Measurements of submicron aerosol chemical composition were made over the central Arctic Ocean from 5 August to 8 September 2008 as a part of the Arctic Summer Cloud Ocean Study (ASCOS) using an aerosol mass spectrometer (AMS). The median levels of sulphate and organics for the entire study were 0.0...
Published in: | Atmospheric Chemistry and Physics |
---|---|
Main Authors: | , , , , , , , , , , , , , |
Format: | Article in Journal/Newspaper |
Language: | unknown |
Published: |
2014
|
Subjects: | |
Online Access: | https://doi.org/10.5194/acp-11-10619-2011 http://hdl.handle.net/10222/44546 |
id |
ftdalhouse:oai:DalSpace.library.dal.ca:10222/44546 |
---|---|
record_format |
openpolar |
spelling |
ftdalhouse:oai:DalSpace.library.dal.ca:10222/44546 2023-05-15T14:25:54+02:00 Aerosol composition and sources in the central Arctic Ocean during ASCOS Chang, R. Y. -W Leck, C. Graus, M. Mueller, M. Paatero, J. Burkhart, J. F. Stohl, A. Orr, L. H. Hayden, K. Li, S. -M Hansel, A. Tjernstrom, M. Leaitch, W. R. Abbatt, J. P. D. 2014-02-24T16:50:08Z https://doi.org/10.5194/acp-11-10619-2011 http://hdl.handle.net/10222/44546 unknown Atmospheric Chemistry and Physics Chang, R. Y. -W, C. Leck, M. Graus, M. Mueller, et al. 2011. "Aerosol composition and sources in the central Arctic Ocean during ASCOS." Atmospheric Chemistry and Physics 11(20): 10619-10636. 1680-7316 http://dx.doi.org/10.5194/acp-11-10619-2011 http://hdl.handle.net/10222/44546 11 20 10619 article 2014 ftdalhouse https://doi.org/10.5194/acp-11-10619-2011 2021-12-29T18:09:40Z Measurements of submicron aerosol chemical composition were made over the central Arctic Ocean from 5 August to 8 September 2008 as a part of the Arctic Summer Cloud Ocean Study (ASCOS) using an aerosol mass spectrometer (AMS). The median levels of sulphate and organics for the entire study were 0.051 and 0.055 mu gm(-3), respectively. Positive matrix factorisation was performed on the entire mass spectral time series and this enabled marine biogenic and continental sources of particles to be separated. These factors accounted for 33% and 36% of the sampled ambient aerosol mass, respectively, and they were both predominantly composed of sulphate, with 47% of the sulphate apportioned to marine biogenic sources and 48% to continental sources, by mass. Within the marine biogenic factor, the ratio of methane sulphonate to sulphate was 0.25+/-0.02, consistent with values reported in the literature. The organic component of the continental factor was more oxidised than that of the marine biogenic factor, suggesting that it had a longer photochemical lifetime than the organics in the marine biogenic factor. The remaining ambient aerosol mass was apportioned to an organic-rich factor that could have arisen from a combination of marine and continental sources. In particular, given that the factor does not correlate with common tracers of continental influence, we cannot rule out that the organic factor arises from a primary marine source. Article in Journal/Newspaper Arctic Arctic Arctic Ocean Dalhousie University: DalSpace Institutional Repository Arctic Arctic Ocean Atmospheric Chemistry and Physics 11 20 10619 10636 |
institution |
Open Polar |
collection |
Dalhousie University: DalSpace Institutional Repository |
op_collection_id |
ftdalhouse |
language |
unknown |
description |
Measurements of submicron aerosol chemical composition were made over the central Arctic Ocean from 5 August to 8 September 2008 as a part of the Arctic Summer Cloud Ocean Study (ASCOS) using an aerosol mass spectrometer (AMS). The median levels of sulphate and organics for the entire study were 0.051 and 0.055 mu gm(-3), respectively. Positive matrix factorisation was performed on the entire mass spectral time series and this enabled marine biogenic and continental sources of particles to be separated. These factors accounted for 33% and 36% of the sampled ambient aerosol mass, respectively, and they were both predominantly composed of sulphate, with 47% of the sulphate apportioned to marine biogenic sources and 48% to continental sources, by mass. Within the marine biogenic factor, the ratio of methane sulphonate to sulphate was 0.25+/-0.02, consistent with values reported in the literature. The organic component of the continental factor was more oxidised than that of the marine biogenic factor, suggesting that it had a longer photochemical lifetime than the organics in the marine biogenic factor. The remaining ambient aerosol mass was apportioned to an organic-rich factor that could have arisen from a combination of marine and continental sources. In particular, given that the factor does not correlate with common tracers of continental influence, we cannot rule out that the organic factor arises from a primary marine source. |
format |
Article in Journal/Newspaper |
author |
Chang, R. Y. -W Leck, C. Graus, M. Mueller, M. Paatero, J. Burkhart, J. F. Stohl, A. Orr, L. H. Hayden, K. Li, S. -M Hansel, A. Tjernstrom, M. Leaitch, W. R. Abbatt, J. P. D. |
spellingShingle |
Chang, R. Y. -W Leck, C. Graus, M. Mueller, M. Paatero, J. Burkhart, J. F. Stohl, A. Orr, L. H. Hayden, K. Li, S. -M Hansel, A. Tjernstrom, M. Leaitch, W. R. Abbatt, J. P. D. Aerosol composition and sources in the central Arctic Ocean during ASCOS |
author_facet |
Chang, R. Y. -W Leck, C. Graus, M. Mueller, M. Paatero, J. Burkhart, J. F. Stohl, A. Orr, L. H. Hayden, K. Li, S. -M Hansel, A. Tjernstrom, M. Leaitch, W. R. Abbatt, J. P. D. |
author_sort |
Chang, R. Y. -W |
title |
Aerosol composition and sources in the central Arctic Ocean during ASCOS |
title_short |
Aerosol composition and sources in the central Arctic Ocean during ASCOS |
title_full |
Aerosol composition and sources in the central Arctic Ocean during ASCOS |
title_fullStr |
Aerosol composition and sources in the central Arctic Ocean during ASCOS |
title_full_unstemmed |
Aerosol composition and sources in the central Arctic Ocean during ASCOS |
title_sort |
aerosol composition and sources in the central arctic ocean during ascos |
publishDate |
2014 |
url |
https://doi.org/10.5194/acp-11-10619-2011 http://hdl.handle.net/10222/44546 |
geographic |
Arctic Arctic Ocean |
geographic_facet |
Arctic Arctic Ocean |
genre |
Arctic Arctic Arctic Ocean |
genre_facet |
Arctic Arctic Arctic Ocean |
op_relation |
Atmospheric Chemistry and Physics Chang, R. Y. -W, C. Leck, M. Graus, M. Mueller, et al. 2011. "Aerosol composition and sources in the central Arctic Ocean during ASCOS." Atmospheric Chemistry and Physics 11(20): 10619-10636. 1680-7316 http://dx.doi.org/10.5194/acp-11-10619-2011 http://hdl.handle.net/10222/44546 11 20 10619 |
op_doi |
https://doi.org/10.5194/acp-11-10619-2011 |
container_title |
Atmospheric Chemistry and Physics |
container_volume |
11 |
container_issue |
20 |
container_start_page |
10619 |
op_container_end_page |
10636 |
_version_ |
1766298377837871104 |