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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ftuniaarhuspubl:oai:pure.atira.dk:publications/4d511332-d18d-477a-956d-45ee4aded643 2024-04-28T08:08:40+00:00 Sources of anions in aerosols in northeast Greenland during late winter Lauridsen, Marlene Fenger Sørensen, Lise Lotte Kristensen, Kasper Jensen, Bjarne Nguyen, Quynh Nøjgaard, Jacob Klenø Massling, Andreas Skov, Henrik Becker, Thomas Glasius, Marianne 2013 https://pure.au.dk/portal/en/publications/4d511332-d18d-477a-956d-45ee4aded643 https://doi.org/10.5194/acp-13-1569-2013 http://www.atmos-chem-phys.net/13/1569/2013/ eng eng https://pure.au.dk/portal/en/publications/4d511332-d18d-477a-956d-45ee4aded643 info:eu-repo/semantics/restrictedAccess Lauridsen , M F , Sørensen , L L , Kristensen , K , Jensen , B , Nguyen , Q , Nøjgaard , J K , Massling , A , Skov , H , Becker , T & Glasius , M 2013 , ' Sources of anions in aerosols in northeast Greenland during late winter ' , Atmospheric Chemistry and Physics , vol. 13 , pp. 1569-1578 . https://doi.org/10.5194/acp-13-1569-2013 article 2013 ftuniaarhuspubl https://doi.org/10.5194/acp-13-1569-2013 2024-04-04T16:51:42Z 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 ngm−3, 2–298 ngm−3 and 535–1087 ngm−3 for chloride (Cl−), nitrate (NO−3 ) and sulphate (SO2− 4 ), 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 SO2−4 , Cl− and NO− 3 , are hypothesized to originate from long-range transport, where SO2−4 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 Aarhus University: Research Atmospheric Chemistry and Physics 13 3 1569 1578 |
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Open Polar |
collection |
Aarhus University: Research |
op_collection_id |
ftuniaarhuspubl |
language |
English |
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 ngm−3, 2–298 ngm−3 and 535–1087 ngm−3 for chloride (Cl−), nitrate (NO−3 ) and sulphate (SO2− 4 ), 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 SO2−4 , Cl− and NO− 3 , are hypothesized to originate from long-range transport, where SO2−4 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 |
Lauridsen, Marlene Fenger Sørensen, Lise Lotte Kristensen, Kasper Jensen, Bjarne Nguyen, Quynh Nøjgaard, Jacob Klenø Massling, Andreas Skov, Henrik Becker, Thomas Glasius, Marianne |
spellingShingle |
Lauridsen, Marlene Fenger Sørensen, Lise Lotte Kristensen, Kasper Jensen, Bjarne Nguyen, Quynh Nøjgaard, Jacob Klenø Massling, Andreas Skov, Henrik Becker, Thomas Glasius, Marianne Sources of anions in aerosols in northeast Greenland during late winter |
author_facet |
Lauridsen, Marlene Fenger Sørensen, Lise Lotte Kristensen, Kasper Jensen, Bjarne Nguyen, Quynh Nøjgaard, Jacob Klenø Massling, Andreas Skov, Henrik Becker, Thomas Glasius, Marianne |
author_sort |
Lauridsen, Marlene 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 |
publishDate |
2013 |
url |
https://pure.au.dk/portal/en/publications/4d511332-d18d-477a-956d-45ee4aded643 https://doi.org/10.5194/acp-13-1569-2013 http://www.atmos-chem-phys.net/13/1569/2013/ |
genre |
Arctic Greenland Sea ice |
genre_facet |
Arctic Greenland Sea ice |
op_source |
Lauridsen , M F , Sørensen , L L , Kristensen , K , Jensen , B , Nguyen , Q , Nøjgaard , J K , Massling , A , Skov , H , Becker , T & Glasius , M 2013 , ' Sources of anions in aerosols in northeast Greenland during late winter ' , Atmospheric Chemistry and Physics , vol. 13 , pp. 1569-1578 . https://doi.org/10.5194/acp-13-1569-2013 |
op_relation |
https://pure.au.dk/portal/en/publications/4d511332-d18d-477a-956d-45ee4aded643 |
op_rights |
info:eu-repo/semantics/restrictedAccess |
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 |
_version_ |
1797577352770748416 |