Sources of light-absorbing aerosol in arctic snow and their seasonal variation
Two data sets consisting of measurements of light absorbing aerosols (LAA) in arctic snow together with suites of other corresponding chemical constituents are presented; the first from Siberia, Greenland and near the North Pole obtained in 2008, and the second from the Canadian arctic obtained in 2...
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ftdoajarticles:oai:doaj.org/article:45bfff2208964c66b67fc2a42c14054c 2023-05-15T14:50:48+02:00 Sources of light-absorbing aerosol in arctic snow and their seasonal variation Dean A. Hegg Stephen G. Warren Thomas C. Grenfell Sarah J Doherty Antony D. Clarke 2010-11-01T00:00:00Z https://doi.org/10.5194/acp-10-10923-2010 https://doaj.org/article/45bfff2208964c66b67fc2a42c14054c EN eng Copernicus Publications http://www.atmos-chem-phys.net/10/10923/2010/acp-10-10923-2010.pdf https://doaj.org/toc/1680-7316 https://doaj.org/toc/1680-7324 doi:10.5194/acp-10-10923-2010 1680-7316 1680-7324 https://doaj.org/article/45bfff2208964c66b67fc2a42c14054c Atmospheric Chemistry and Physics, Vol 10, Iss 22, Pp 10923-10938 (2010) Physics QC1-999 Chemistry QD1-999 article 2010 ftdoajarticles https://doi.org/10.5194/acp-10-10923-2010 2022-12-31T09:10:40Z Two data sets consisting of measurements of light absorbing aerosols (LAA) in arctic snow together with suites of other corresponding chemical constituents are presented; the first from Siberia, Greenland and near the North Pole obtained in 2008, and the second from the Canadian arctic obtained in 2009. A preliminary differentiation of the LAA into black carbon (BC) and non-BC LAA is done. Source attribution of the light absorbing aerosols was done using a positive matrix factorization (PMF) model. Four sources were found for each data set (crop and grass burning, boreal biomass burning, pollution and marine). For both data sets, the crops and grass biomass burning was the main source of both LAA species, suggesting the non-BC LAA was brown carbon. Depth profiles at most of the sites allowed assessment of the seasonal variation in the source strengths. The biomass burning sources dominated in the spring but pollution played a more significant (though rarely dominant) role in the fall, winter and, for Greenland, summer. The PMF analysis is consistent with trajectory analysis and satellite fire maps. Article in Journal/Newspaper Arctic black carbon Greenland North Pole Siberia Directory of Open Access Journals: DOAJ Articles Arctic Greenland North Pole Atmospheric Chemistry and Physics 10 22 10923 10938 |
institution |
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 Dean A. Hegg Stephen G. Warren Thomas C. Grenfell Sarah J Doherty Antony D. Clarke Sources of light-absorbing aerosol in arctic snow and their seasonal variation |
topic_facet |
Physics QC1-999 Chemistry QD1-999 |
description |
Two data sets consisting of measurements of light absorbing aerosols (LAA) in arctic snow together with suites of other corresponding chemical constituents are presented; the first from Siberia, Greenland and near the North Pole obtained in 2008, and the second from the Canadian arctic obtained in 2009. A preliminary differentiation of the LAA into black carbon (BC) and non-BC LAA is done. Source attribution of the light absorbing aerosols was done using a positive matrix factorization (PMF) model. Four sources were found for each data set (crop and grass burning, boreal biomass burning, pollution and marine). For both data sets, the crops and grass biomass burning was the main source of both LAA species, suggesting the non-BC LAA was brown carbon. Depth profiles at most of the sites allowed assessment of the seasonal variation in the source strengths. The biomass burning sources dominated in the spring but pollution played a more significant (though rarely dominant) role in the fall, winter and, for Greenland, summer. The PMF analysis is consistent with trajectory analysis and satellite fire maps. |
format |
Article in Journal/Newspaper |
author |
Dean A. Hegg Stephen G. Warren Thomas C. Grenfell Sarah J Doherty Antony D. Clarke |
author_facet |
Dean A. Hegg Stephen G. Warren Thomas C. Grenfell Sarah J Doherty Antony D. Clarke |
author_sort |
Dean A. Hegg |
title |
Sources of light-absorbing aerosol in arctic snow and their seasonal variation |
title_short |
Sources of light-absorbing aerosol in arctic snow and their seasonal variation |
title_full |
Sources of light-absorbing aerosol in arctic snow and their seasonal variation |
title_fullStr |
Sources of light-absorbing aerosol in arctic snow and their seasonal variation |
title_full_unstemmed |
Sources of light-absorbing aerosol in arctic snow and their seasonal variation |
title_sort |
sources of light-absorbing aerosol in arctic snow and their seasonal variation |
publisher |
Copernicus Publications |
publishDate |
2010 |
url |
https://doi.org/10.5194/acp-10-10923-2010 https://doaj.org/article/45bfff2208964c66b67fc2a42c14054c |
geographic |
Arctic Greenland North Pole |
geographic_facet |
Arctic Greenland North Pole |
genre |
Arctic black carbon Greenland North Pole Siberia |
genre_facet |
Arctic black carbon Greenland North Pole Siberia |
op_source |
Atmospheric Chemistry and Physics, Vol 10, Iss 22, Pp 10923-10938 (2010) |
op_relation |
http://www.atmos-chem-phys.net/10/10923/2010/acp-10-10923-2010.pdf https://doaj.org/toc/1680-7316 https://doaj.org/toc/1680-7324 doi:10.5194/acp-10-10923-2010 1680-7316 1680-7324 https://doaj.org/article/45bfff2208964c66b67fc2a42c14054c |
op_doi |
https://doi.org/10.5194/acp-10-10923-2010 |
container_title |
Atmospheric Chemistry and Physics |
container_volume |
10 |
container_issue |
22 |
container_start_page |
10923 |
op_container_end_page |
10938 |
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1766321853990699008 |