Potential source regions and processes of aerosol in the summer Arctic
Sub-micrometer particle size distributions measured during four summer cruises of the Swedish icebreaker Oden 1991, 1996, 2001, and 2008 were combined with dimethyl sulfide gas data, back trajectories, and daily maps of pack ice cover in order to investigate source areas and aerosol formation proces...
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ftdoajarticles:oai:doaj.org/article:3237e62ce9964428ae728d814ed49a03 2023-05-15T14:29:20+02:00 Potential source regions and processes of aerosol in the summer Arctic J. Heintzenberg C. Leck P. Tunved 2015-06-01T00:00:00Z https://doi.org/10.5194/acp-15-6487-2015 https://doaj.org/article/3237e62ce9964428ae728d814ed49a03 EN eng Copernicus Publications http://www.atmos-chem-phys.net/15/6487/2015/acp-15-6487-2015.pdf https://doaj.org/toc/1680-7316 https://doaj.org/toc/1680-7324 1680-7316 1680-7324 doi:10.5194/acp-15-6487-2015 https://doaj.org/article/3237e62ce9964428ae728d814ed49a03 Atmospheric Chemistry and Physics, Vol 15, Iss 11, Pp 6487-6502 (2015) Physics QC1-999 Chemistry QD1-999 article 2015 ftdoajarticles https://doi.org/10.5194/acp-15-6487-2015 2022-12-31T13:30:59Z Sub-micrometer particle size distributions measured during four summer cruises of the Swedish icebreaker Oden 1991, 1996, 2001, and 2008 were combined with dimethyl sulfide gas data, back trajectories, and daily maps of pack ice cover in order to investigate source areas and aerosol formation processes of the boundary layer aerosol in the central Arctic. With a clustering algorithm, potential aerosol source areas were explored. Clustering of particle size distributions together with back trajectories delineated five potential source regions and three different aerosol types that covered most of the Arctic Basin: marine, newly formed and aged particles over the pack ice. Most of the pack ice area with < 15% of open water under the trajectories exhibited the aged aerosol type with only one major mode around 40 nm. For newly formed particles to occur, two conditions had to be fulfilled over the pack ice: the air had spent 10 days while traveling over ever more contiguous ice and had traveled over less than 30% open water during the last 5 days. Additionally, the air had experienced more open water (at least twice as much as in the cases of aged aerosol) during the last 4 days before arrival in heavy ice conditions at Oden . Thus we hypothesize that these two conditions were essential factors for the formation of ultrafine particles over the central Arctic pack ice. In a comparison the Oden data with summer size distribution data from Alert, Nunavut, and Mt. Zeppelin, Spitsbergen, we confirmed the Oden findings with respect to particle sources over the central Arctic. Future more frequent broken-ice or open water patches in summer will spur biological activity in surface water promoting the formation of biological particles. Thereby low clouds and fogs and subsequently the surface energy balance and ice melt may be affected. Article in Journal/Newspaper Arctic Basin Arctic Nunavut oden Spitsbergen Directory of Open Access Journals: DOAJ Articles Arctic Nunavut Atmospheric Chemistry and Physics 15 11 6487 6502 |
institution |
Open Polar |
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Directory of Open Access Journals: DOAJ Articles |
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ftdoajarticles |
language |
English |
topic |
Physics QC1-999 Chemistry QD1-999 |
spellingShingle |
Physics QC1-999 Chemistry QD1-999 J. Heintzenberg C. Leck P. Tunved Potential source regions and processes of aerosol in the summer Arctic |
topic_facet |
Physics QC1-999 Chemistry QD1-999 |
description |
Sub-micrometer particle size distributions measured during four summer cruises of the Swedish icebreaker Oden 1991, 1996, 2001, and 2008 were combined with dimethyl sulfide gas data, back trajectories, and daily maps of pack ice cover in order to investigate source areas and aerosol formation processes of the boundary layer aerosol in the central Arctic. With a clustering algorithm, potential aerosol source areas were explored. Clustering of particle size distributions together with back trajectories delineated five potential source regions and three different aerosol types that covered most of the Arctic Basin: marine, newly formed and aged particles over the pack ice. Most of the pack ice area with < 15% of open water under the trajectories exhibited the aged aerosol type with only one major mode around 40 nm. For newly formed particles to occur, two conditions had to be fulfilled over the pack ice: the air had spent 10 days while traveling over ever more contiguous ice and had traveled over less than 30% open water during the last 5 days. Additionally, the air had experienced more open water (at least twice as much as in the cases of aged aerosol) during the last 4 days before arrival in heavy ice conditions at Oden . Thus we hypothesize that these two conditions were essential factors for the formation of ultrafine particles over the central Arctic pack ice. In a comparison the Oden data with summer size distribution data from Alert, Nunavut, and Mt. Zeppelin, Spitsbergen, we confirmed the Oden findings with respect to particle sources over the central Arctic. Future more frequent broken-ice or open water patches in summer will spur biological activity in surface water promoting the formation of biological particles. Thereby low clouds and fogs and subsequently the surface energy balance and ice melt may be affected. |
format |
Article in Journal/Newspaper |
author |
J. Heintzenberg C. Leck P. Tunved |
author_facet |
J. Heintzenberg C. Leck P. Tunved |
author_sort |
J. Heintzenberg |
title |
Potential source regions and processes of aerosol in the summer Arctic |
title_short |
Potential source regions and processes of aerosol in the summer Arctic |
title_full |
Potential source regions and processes of aerosol in the summer Arctic |
title_fullStr |
Potential source regions and processes of aerosol in the summer Arctic |
title_full_unstemmed |
Potential source regions and processes of aerosol in the summer Arctic |
title_sort |
potential source regions and processes of aerosol in the summer arctic |
publisher |
Copernicus Publications |
publishDate |
2015 |
url |
https://doi.org/10.5194/acp-15-6487-2015 https://doaj.org/article/3237e62ce9964428ae728d814ed49a03 |
geographic |
Arctic Nunavut |
geographic_facet |
Arctic Nunavut |
genre |
Arctic Basin Arctic Nunavut oden Spitsbergen |
genre_facet |
Arctic Basin Arctic Nunavut oden Spitsbergen |
op_source |
Atmospheric Chemistry and Physics, Vol 15, Iss 11, Pp 6487-6502 (2015) |
op_relation |
http://www.atmos-chem-phys.net/15/6487/2015/acp-15-6487-2015.pdf https://doaj.org/toc/1680-7316 https://doaj.org/toc/1680-7324 1680-7316 1680-7324 doi:10.5194/acp-15-6487-2015 https://doaj.org/article/3237e62ce9964428ae728d814ed49a03 |
op_doi |
https://doi.org/10.5194/acp-15-6487-2015 |
container_title |
Atmospheric Chemistry and Physics |
container_volume |
15 |
container_issue |
11 |
container_start_page |
6487 |
op_container_end_page |
6502 |
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