Shipborne observations of black carbon aerosols in the western Arctic Ocean during summer and autumn 2016–2020: impact of boreal fires
Black carbon (BC) aerosol is considered one of the most important contributors to rapid climate warming as well as snow and sea ice melting in the Arctic, yet the observations of BC aerosols in the Arctic Ocean have been limited due to infrastructural and logistical difficulties. We observed BC mass...
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2024
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ftnonlinearchiv:oai:noa.gwlb.de:cop_mods_00073942 2024-06-23T07:49:05+00:00 Shipborne observations of black carbon aerosols in the western Arctic Ocean during summer and autumn 2016–2020: impact of boreal fires Deng, Yange Tanimoto, Hiroshi Ikeda, Kohei Kameyama, Sohiko Okamoto, Sachiko Jung, Jinyoung Yoon, Young Jun Yang, Eun Jin Kang, Sung-Ho 2024-05 electronic https://doi.org/10.5194/acp-24-6339-2024 https://noa.gwlb.de/receive/cop_mods_00073942 https://noa.gwlb.de/servlets/MCRFileNodeServlet/cop_derivate_00072075/acp-24-6339-2024.pdf https://acp.copernicus.org/articles/24/6339/2024/acp-24-6339-2024.pdf eng eng Copernicus Publications Atmospheric Chemistry and Physics -- http://www.atmos-chem-phys.net/volumes_and_issues.html -- http://www.bibliothek.uni-regensburg.de/ezeit/?2069847 -- 1680-7324 https://doi.org/10.5194/acp-24-6339-2024 https://noa.gwlb.de/receive/cop_mods_00073942 https://noa.gwlb.de/servlets/MCRFileNodeServlet/cop_derivate_00072075/acp-24-6339-2024.pdf https://acp.copernicus.org/articles/24/6339/2024/acp-24-6339-2024.pdf https://creativecommons.org/licenses/by/4.0/ uneingeschränkt info:eu-repo/semantics/openAccess article Verlagsveröffentlichung article Text doc-type:article 2024 ftnonlinearchiv https://doi.org/10.5194/acp-24-6339-2024 2024-06-10T23:38:39Z Black carbon (BC) aerosol is considered one of the most important contributors to rapid climate warming as well as snow and sea ice melting in the Arctic, yet the observations of BC aerosols in the Arctic Ocean have been limited due to infrastructural and logistical difficulties. We observed BC mass concentrations (mBC) using light absorption methods on board the icebreaker R/V Araon in the Arctic Ocean (< 80° N and 166° E to 156° W) as well as the North Pacific Ocean in summer and early autumn of 2016–2020. The levels, interannual variations, and pollution episodes of mBC in the Arctic were examined, and the emission sources responsible for the high-BC episodes were analyzed with global chemistry-transport-model simulations. The average mBC in the surface air over the Arctic Ocean (72–80° N) observed by the 2019 cruise exceeded 70 ng m−3, which was substantially higher than that observed by cruises in other years (approximately 10 ng m−3). The much higher mBC observed in 2019 was perhaps due to more frequent wildfires occurring in the Arctic region than in other years. The model suggested that biomass burning contributed most to the observed BC by mass in the western Arctic Ocean and the marginal seas. For these 5 years, we identified 10 high-BC episodes north of 65° N, including one in 2018 that was associated with co-enhancements of CO and CH4 but not CO2 and O3. The model analysis indicated that certain episodes were attributed to BC-containing air masses transported from boreal fire regions to the Arctic Ocean, with some transport occurring near the surface and others in the mid-troposphere. This study provides crucial datasets on BC mass concentrations and the mixing ratios of O3, CH4, CO, and CO2 in the western Arctic Ocean regions, and it highlights the significant impact of boreal fires on the observed Arctic BC during the summer and early autumn months. Article in Journal/Newspaper Arctic Arctic Ocean black carbon Sea ice Niedersächsisches Online-Archiv NOA Arctic Arctic Ocean Pacific Atmospheric Chemistry and Physics 24 10 6339 6357 |
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article Verlagsveröffentlichung Deng, Yange Tanimoto, Hiroshi Ikeda, Kohei Kameyama, Sohiko Okamoto, Sachiko Jung, Jinyoung Yoon, Young Jun Yang, Eun Jin Kang, Sung-Ho Shipborne observations of black carbon aerosols in the western Arctic Ocean during summer and autumn 2016–2020: impact of boreal fires |
topic_facet |
article Verlagsveröffentlichung |
description |
Black carbon (BC) aerosol is considered one of the most important contributors to rapid climate warming as well as snow and sea ice melting in the Arctic, yet the observations of BC aerosols in the Arctic Ocean have been limited due to infrastructural and logistical difficulties. We observed BC mass concentrations (mBC) using light absorption methods on board the icebreaker R/V Araon in the Arctic Ocean (< 80° N and 166° E to 156° W) as well as the North Pacific Ocean in summer and early autumn of 2016–2020. The levels, interannual variations, and pollution episodes of mBC in the Arctic were examined, and the emission sources responsible for the high-BC episodes were analyzed with global chemistry-transport-model simulations. The average mBC in the surface air over the Arctic Ocean (72–80° N) observed by the 2019 cruise exceeded 70 ng m−3, which was substantially higher than that observed by cruises in other years (approximately 10 ng m−3). The much higher mBC observed in 2019 was perhaps due to more frequent wildfires occurring in the Arctic region than in other years. The model suggested that biomass burning contributed most to the observed BC by mass in the western Arctic Ocean and the marginal seas. For these 5 years, we identified 10 high-BC episodes north of 65° N, including one in 2018 that was associated with co-enhancements of CO and CH4 but not CO2 and O3. The model analysis indicated that certain episodes were attributed to BC-containing air masses transported from boreal fire regions to the Arctic Ocean, with some transport occurring near the surface and others in the mid-troposphere. This study provides crucial datasets on BC mass concentrations and the mixing ratios of O3, CH4, CO, and CO2 in the western Arctic Ocean regions, and it highlights the significant impact of boreal fires on the observed Arctic BC during the summer and early autumn months. |
format |
Article in Journal/Newspaper |
author |
Deng, Yange Tanimoto, Hiroshi Ikeda, Kohei Kameyama, Sohiko Okamoto, Sachiko Jung, Jinyoung Yoon, Young Jun Yang, Eun Jin Kang, Sung-Ho |
author_facet |
Deng, Yange Tanimoto, Hiroshi Ikeda, Kohei Kameyama, Sohiko Okamoto, Sachiko Jung, Jinyoung Yoon, Young Jun Yang, Eun Jin Kang, Sung-Ho |
author_sort |
Deng, Yange |
title |
Shipborne observations of black carbon aerosols in the western Arctic Ocean during summer and autumn 2016–2020: impact of boreal fires |
title_short |
Shipborne observations of black carbon aerosols in the western Arctic Ocean during summer and autumn 2016–2020: impact of boreal fires |
title_full |
Shipborne observations of black carbon aerosols in the western Arctic Ocean during summer and autumn 2016–2020: impact of boreal fires |
title_fullStr |
Shipborne observations of black carbon aerosols in the western Arctic Ocean during summer and autumn 2016–2020: impact of boreal fires |
title_full_unstemmed |
Shipborne observations of black carbon aerosols in the western Arctic Ocean during summer and autumn 2016–2020: impact of boreal fires |
title_sort |
shipborne observations of black carbon aerosols in the western arctic ocean during summer and autumn 2016–2020: impact of boreal fires |
publisher |
Copernicus Publications |
publishDate |
2024 |
url |
https://doi.org/10.5194/acp-24-6339-2024 https://noa.gwlb.de/receive/cop_mods_00073942 https://noa.gwlb.de/servlets/MCRFileNodeServlet/cop_derivate_00072075/acp-24-6339-2024.pdf https://acp.copernicus.org/articles/24/6339/2024/acp-24-6339-2024.pdf |
geographic |
Arctic Arctic Ocean Pacific |
geographic_facet |
Arctic Arctic Ocean Pacific |
genre |
Arctic Arctic Ocean black carbon Sea ice |
genre_facet |
Arctic Arctic Ocean black carbon Sea ice |
op_relation |
Atmospheric Chemistry and Physics -- http://www.atmos-chem-phys.net/volumes_and_issues.html -- http://www.bibliothek.uni-regensburg.de/ezeit/?2069847 -- 1680-7324 https://doi.org/10.5194/acp-24-6339-2024 https://noa.gwlb.de/receive/cop_mods_00073942 https://noa.gwlb.de/servlets/MCRFileNodeServlet/cop_derivate_00072075/acp-24-6339-2024.pdf https://acp.copernicus.org/articles/24/6339/2024/acp-24-6339-2024.pdf |
op_rights |
https://creativecommons.org/licenses/by/4.0/ uneingeschränkt info:eu-repo/semantics/openAccess |
op_doi |
https://doi.org/10.5194/acp-24-6339-2024 |
container_title |
Atmospheric Chemistry and Physics |
container_volume |
24 |
container_issue |
10 |
container_start_page |
6339 |
op_container_end_page |
6357 |
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1802639363228565504 |