Sources of anions in aerosols in northeast Greenland during late winter
The knowledge of climate effects of atmospheric aerosols is associated with large uncertainty, and a better understanding of their physical and chemical properties is needed, especially in the Arctic environment. The objective of the present study is to improve our understanding of the processes aff...
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ftdoajarticles:oai:doaj.org/article:6f8657d018294338b24925b05aa76b7a 2023-05-15T14:55:44+02:00 Sources of anions in aerosols in northeast Greenland during late winter M. Fenger L. L. Sørensen K. Kristensen B. Jensen Q. T. Nguyen J. K. Nøjgaard A. Massling H. Skov T. Becker M. Glasius 2013-02-01T00:00:00Z https://doi.org/10.5194/acp-13-1569-2013 https://doaj.org/article/6f8657d018294338b24925b05aa76b7a EN eng Copernicus Publications http://www.atmos-chem-phys.net/13/1569/2013/acp-13-1569-2013.pdf https://doaj.org/toc/1680-7316 https://doaj.org/toc/1680-7324 doi:10.5194/acp-13-1569-2013 1680-7316 1680-7324 https://doaj.org/article/6f8657d018294338b24925b05aa76b7a Atmospheric Chemistry and Physics, Vol 13, Iss 3, Pp 1569-1578 (2013) Physics QC1-999 Chemistry QD1-999 article 2013 ftdoajarticles https://doi.org/10.5194/acp-13-1569-2013 2022-12-31T02:30:12Z The knowledge of climate effects of atmospheric aerosols is associated with large uncertainty, and a better understanding of their physical and chemical properties is needed, especially in the Arctic environment. The objective of the present study is to improve our understanding of the processes affecting the composition of aerosols in the high Arctic. Therefore size-segregated aerosols were sampled at a high Arctic site, Station Nord (Northeast Greenland), in March 2009 using a Micro Orifice Uniform Deposit Impactor. The aerosol samples were extracted in order to analyse three water-soluble anions: chloride, nitrate and sulphate. The results are discussed based on possible chemical and physical transformations as well as transport patterns. The total concentrations of the ions at Station Nord were 53–507 ng m −3 , 2–298 ng m −3 and 535–1087 ng m −3 for chloride (Cl − ), nitrate (NO 3 − ) and sulphate (SO 4 2− ), respectively. The aerosols in late winter/early spring, after polar sunrise, are found to be a mixture of long-range transported and regional to local originating aerosols. Fine particles, smaller than 1 μm, containing SO 4 2− , Cl − and NO 3 − , are hypothesized to originate from long-range transport, where SO 4 2− is by far the dominating anion accounting for 50–85% of the analyzed mass. The analysis suggests that Cl − and NO 3 − in coarser particles (> 1.5 μm) originate from local/regional sources. Under conditions where the air mass is transported over sea ice at high wind speeds, very coarse particles (> 18 μm) are observed, and it is hypothesized that frost flowers on the sea ice are a source of the very coarse nitrate particles. Article in Journal/Newspaper Arctic Greenland Sea ice Directory of Open Access Journals: DOAJ Articles Arctic Greenland Station Nord ENVELOPE(-16.663,-16.663,81.599,81.599) Atmospheric Chemistry and Physics 13 3 1569 1578 |
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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 M. Fenger L. L. Sørensen K. Kristensen B. Jensen Q. T. Nguyen J. K. Nøjgaard A. Massling H. Skov T. Becker M. Glasius Sources of anions in aerosols in northeast Greenland during late winter |
topic_facet |
Physics QC1-999 Chemistry QD1-999 |
description |
The knowledge of climate effects of atmospheric aerosols is associated with large uncertainty, and a better understanding of their physical and chemical properties is needed, especially in the Arctic environment. The objective of the present study is to improve our understanding of the processes affecting the composition of aerosols in the high Arctic. Therefore size-segregated aerosols were sampled at a high Arctic site, Station Nord (Northeast Greenland), in March 2009 using a Micro Orifice Uniform Deposit Impactor. The aerosol samples were extracted in order to analyse three water-soluble anions: chloride, nitrate and sulphate. The results are discussed based on possible chemical and physical transformations as well as transport patterns. The total concentrations of the ions at Station Nord were 53–507 ng m −3 , 2–298 ng m −3 and 535–1087 ng m −3 for chloride (Cl − ), nitrate (NO 3 − ) and sulphate (SO 4 2− ), respectively. The aerosols in late winter/early spring, after polar sunrise, are found to be a mixture of long-range transported and regional to local originating aerosols. Fine particles, smaller than 1 μm, containing SO 4 2− , Cl − and NO 3 − , are hypothesized to originate from long-range transport, where SO 4 2− is by far the dominating anion accounting for 50–85% of the analyzed mass. The analysis suggests that Cl − and NO 3 − in coarser particles (> 1.5 μm) originate from local/regional sources. Under conditions where the air mass is transported over sea ice at high wind speeds, very coarse particles (> 18 μm) are observed, and it is hypothesized that frost flowers on the sea ice are a source of the very coarse nitrate particles. |
format |
Article in Journal/Newspaper |
author |
M. Fenger L. L. Sørensen K. Kristensen B. Jensen Q. T. Nguyen J. K. Nøjgaard A. Massling H. Skov T. Becker M. Glasius |
author_facet |
M. Fenger L. L. Sørensen K. Kristensen B. Jensen Q. T. Nguyen J. K. Nøjgaard A. Massling H. Skov T. Becker M. Glasius |
author_sort |
M. Fenger |
title |
Sources of anions in aerosols in northeast Greenland during late winter |
title_short |
Sources of anions in aerosols in northeast Greenland during late winter |
title_full |
Sources of anions in aerosols in northeast Greenland during late winter |
title_fullStr |
Sources of anions in aerosols in northeast Greenland during late winter |
title_full_unstemmed |
Sources of anions in aerosols in northeast Greenland during late winter |
title_sort |
sources of anions in aerosols in northeast greenland during late winter |
publisher |
Copernicus Publications |
publishDate |
2013 |
url |
https://doi.org/10.5194/acp-13-1569-2013 https://doaj.org/article/6f8657d018294338b24925b05aa76b7a |
long_lat |
ENVELOPE(-16.663,-16.663,81.599,81.599) |
geographic |
Arctic Greenland Station Nord |
geographic_facet |
Arctic Greenland Station Nord |
genre |
Arctic Greenland Sea ice |
genre_facet |
Arctic Greenland Sea ice |
op_source |
Atmospheric Chemistry and Physics, Vol 13, Iss 3, Pp 1569-1578 (2013) |
op_relation |
http://www.atmos-chem-phys.net/13/1569/2013/acp-13-1569-2013.pdf https://doaj.org/toc/1680-7316 https://doaj.org/toc/1680-7324 doi:10.5194/acp-13-1569-2013 1680-7316 1680-7324 https://doaj.org/article/6f8657d018294338b24925b05aa76b7a |
op_doi |
https://doi.org/10.5194/acp-13-1569-2013 |
container_title |
Atmospheric Chemistry and Physics |
container_volume |
13 |
container_issue |
3 |
container_start_page |
1569 |
op_container_end_page |
1578 |
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1766327750302367744 |