Air quality monitoring in communities of the Canadian Arctic during the high shipping season with a focus on local and marine pollution
The Canadian Arctic has experienced decreasing sea ice extent and increasing shipping activity in recent decades. While there are economic incentives to develop resources in the north, there are environmental concerns that increasing marine traffic will contribute to declining air quality in norther...
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ftcopernicus:oai:publications.copernicus.org:acp27292 2023-05-15T15:03:40+02:00 Air quality monitoring in communities of the Canadian Arctic during the high shipping season with a focus on local and marine pollution Aliabadi, A. A. Staebler, R. M. Sharma, S. 2018-09-09 application/pdf https://doi.org/10.5194/acp-15-2651-2015 https://www.atmos-chem-phys.net/15/2651/2015/ eng eng doi:10.5194/acp-15-2651-2015 https://www.atmos-chem-phys.net/15/2651/2015/ eISSN: 1680-7324 Text 2018 ftcopernicus https://doi.org/10.5194/acp-15-2651-2015 2019-12-24T09:53:43Z The Canadian Arctic has experienced decreasing sea ice extent and increasing shipping activity in recent decades. While there are economic incentives to develop resources in the north, there are environmental concerns that increasing marine traffic will contribute to declining air quality in northern communities. In an effort to characterize the relative impact of shipping on air quality in the north, two monitoring stations have been installed in Cape Dorset and Resolute, Nunavut, and have been operational since 1 June 2013. The impact of shipping and other sources of emissions on NO x , O 3 , SO 2 , BC, and PM 2.5 pollution have been characterized for the 2013 shipping season from 1 June to 1 November. In addition, a high-resolution Air Quality Health Index (AQHI) for both sites was computed. Shipping consistently increased O 3 mixing ratio and PM 2.5 concentration. The 90% confidence interval for mean difference in O 3 mixing ratio between ship- and no ship-influenced air masses were up to 4.6–4.7 ppb and 2.5–2.7 ppb for Cape Dorset and Resolute, respectively. The same intervals for PM 2.5 concentrations were up to 1.8–1.9 μg m −3 and 0.5–0.6 μg m −3 . Ship-influenced air masses consistently exhibited an increase of 0.1 to 0.3 in the high-resolution AQHI compared to no ship-influenced air masses. Trajectory cluster analysis in combination with ship traffic tracking provided an estimated range for percent ship contribution to NO x , O 3 , SO 2 , and PM 2.5 that were 12.9–17.5 %, 16.2–18.1 %, 16.9–18.3 %, and 19.5–31.7 % for Cape Dorset and 1.0–7.2 %, 2.9–4.8 %, 5.5–10.0 %, and 6.5–7.2 % for Resolute during the 2013 shipping season. Additional measurements in Resolute suggested that percent ship contribution to black carbon was 4.3–9.8 % and that black carbon constituted 1.3–9.7 % of total PM 2.5 mass in ship plumes. Continued air quality monitoring in the above sites for future shipping seasons will improve the statistics in our analysis and characterize repeating seasonal patterns in air quality due to shipping, local pollution, and long-range transport. Text Arctic black carbon Cape Dorset Nunavut Sea ice Copernicus Publications: E-Journals Arctic Cape Dorset ENVELOPE(-76.482,-76.482,64.179,64.179) Nunavut Atmospheric Chemistry and Physics 15 5 2651 2673 |
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Open Polar |
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Copernicus Publications: E-Journals |
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ftcopernicus |
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English |
description |
The Canadian Arctic has experienced decreasing sea ice extent and increasing shipping activity in recent decades. While there are economic incentives to develop resources in the north, there are environmental concerns that increasing marine traffic will contribute to declining air quality in northern communities. In an effort to characterize the relative impact of shipping on air quality in the north, two monitoring stations have been installed in Cape Dorset and Resolute, Nunavut, and have been operational since 1 June 2013. The impact of shipping and other sources of emissions on NO x , O 3 , SO 2 , BC, and PM 2.5 pollution have been characterized for the 2013 shipping season from 1 June to 1 November. In addition, a high-resolution Air Quality Health Index (AQHI) for both sites was computed. Shipping consistently increased O 3 mixing ratio and PM 2.5 concentration. The 90% confidence interval for mean difference in O 3 mixing ratio between ship- and no ship-influenced air masses were up to 4.6–4.7 ppb and 2.5–2.7 ppb for Cape Dorset and Resolute, respectively. The same intervals for PM 2.5 concentrations were up to 1.8–1.9 μg m −3 and 0.5–0.6 μg m −3 . Ship-influenced air masses consistently exhibited an increase of 0.1 to 0.3 in the high-resolution AQHI compared to no ship-influenced air masses. Trajectory cluster analysis in combination with ship traffic tracking provided an estimated range for percent ship contribution to NO x , O 3 , SO 2 , and PM 2.5 that were 12.9–17.5 %, 16.2–18.1 %, 16.9–18.3 %, and 19.5–31.7 % for Cape Dorset and 1.0–7.2 %, 2.9–4.8 %, 5.5–10.0 %, and 6.5–7.2 % for Resolute during the 2013 shipping season. Additional measurements in Resolute suggested that percent ship contribution to black carbon was 4.3–9.8 % and that black carbon constituted 1.3–9.7 % of total PM 2.5 mass in ship plumes. Continued air quality monitoring in the above sites for future shipping seasons will improve the statistics in our analysis and characterize repeating seasonal patterns in air quality due to shipping, local pollution, and long-range transport. |
format |
Text |
author |
Aliabadi, A. A. Staebler, R. M. Sharma, S. |
spellingShingle |
Aliabadi, A. A. Staebler, R. M. Sharma, S. Air quality monitoring in communities of the Canadian Arctic during the high shipping season with a focus on local and marine pollution |
author_facet |
Aliabadi, A. A. Staebler, R. M. Sharma, S. |
author_sort |
Aliabadi, A. A. |
title |
Air quality monitoring in communities of the Canadian Arctic during the high shipping season with a focus on local and marine pollution |
title_short |
Air quality monitoring in communities of the Canadian Arctic during the high shipping season with a focus on local and marine pollution |
title_full |
Air quality monitoring in communities of the Canadian Arctic during the high shipping season with a focus on local and marine pollution |
title_fullStr |
Air quality monitoring in communities of the Canadian Arctic during the high shipping season with a focus on local and marine pollution |
title_full_unstemmed |
Air quality monitoring in communities of the Canadian Arctic during the high shipping season with a focus on local and marine pollution |
title_sort |
air quality monitoring in communities of the canadian arctic during the high shipping season with a focus on local and marine pollution |
publishDate |
2018 |
url |
https://doi.org/10.5194/acp-15-2651-2015 https://www.atmos-chem-phys.net/15/2651/2015/ |
long_lat |
ENVELOPE(-76.482,-76.482,64.179,64.179) |
geographic |
Arctic Cape Dorset Nunavut |
geographic_facet |
Arctic Cape Dorset Nunavut |
genre |
Arctic black carbon Cape Dorset Nunavut Sea ice |
genre_facet |
Arctic black carbon Cape Dorset Nunavut Sea ice |
op_source |
eISSN: 1680-7324 |
op_relation |
doi:10.5194/acp-15-2651-2015 https://www.atmos-chem-phys.net/15/2651/2015/ |
op_doi |
https://doi.org/10.5194/acp-15-2651-2015 |
container_title |
Atmospheric Chemistry and Physics |
container_volume |
15 |
container_issue |
5 |
container_start_page |
2651 |
op_container_end_page |
2673 |
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1766335515465875456 |