Chemical composition and source attribution of sub-micrometre aerosol particles in the summertime Arctic lower troposphere
Aerosol particles impact the Arctic climate system both directly and indirectly by modifying cloud properties, yet our understanding of their vertical distribution, chemical composition, mixing state, and sources in the summertime Arctic is incomplete. In situ vertical observations of particle prope...
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ftpubman:oai:pure.mpg.de:item_3323284 2023-08-27T04:07:03+02:00 Chemical composition and source attribution of sub-micrometre aerosol particles in the summertime Arctic lower troposphere Köllner, F. Schneider, J. Willis, M. Schulz, H. Kunkel, D. Bozem, H. Hoor, P. Klimach, T. Helleis, F. Burkart, J. Leaitch, W. Aliabadi, A. Abbatt, J. Herber, A. Borrmann, S. 2021-04-30 http://hdl.handle.net/21.11116/0000-0008-9EF0-7 unknown info:eu-repo/semantics/altIdentifier/doi/10.5194/acp-21-6509-2021 http://hdl.handle.net/21.11116/0000-0008-9EF0-7 Atmospheric Chemistry and Physics info:eu-repo/semantics/article 2021 ftpubman https://doi.org/10.5194/acp-21-6509-2021 2023-08-02T02:02:55Z Aerosol particles impact the Arctic climate system both directly and indirectly by modifying cloud properties, yet our understanding of their vertical distribution, chemical composition, mixing state, and sources in the summertime Arctic is incomplete. In situ vertical observations of particle properties in the high Arctic combined with modelling analysis on source attribution are in short supply, particularly during summer. We thus use airborne measurements of aerosol particle composition to demonstrate the strong contrast between particle sources and composition within and above the summertime Arctic boundary layer. In situ measurements from two complementary aerosol mass spectrometers, the Aircraft-based Laser Ablation Aerosol Mass Spectrometer (ALABAMA) and an Aerodyne high-resolution time-of-flight aerosol mass spectrometer (HR-ToF-AMS), are presented alongside black carbon measurements from an single particle soot photometer (SP2). Particle composition analysis was complemented by trace gas measurements, satellite data, and air mass history modelling to attribute particle properties to particle origin and air mass source regions. Particle composition above the summertime Arctic boundary layer was dominated by chemically aged particles, containing elemental carbon, nitrate, ammonium, sulfate, and organic matter. From our analysis, we conclude that the presence of these particles was driven by transport of aerosol and precursor gases from mid-latitudes to Arctic regions. Specifically, elevated concentrations of nitrate, ammonium, and organic matter coincided with time spent over vegetation fires in northern Canada. In parallel, those particles were largely present in high CO environments (> 90 ppbv). Additionally, we observed that the organic-to-sulfate ratio was enhanced with increasing influence from these fires. Besides vegetation fires, particle sources in mid-latitudes further include anthropogenic emissions in Europe, North America, and East Asia. The presence of particles in the Arctic lower free ... Article in Journal/Newspaper Arctic black carbon Max Planck Society: MPG.PuRe Arctic Canada Alabama Atmospheric Chemistry and Physics 21 8 6509 6539 |
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Max Planck Society: MPG.PuRe |
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ftpubman |
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unknown |
description |
Aerosol particles impact the Arctic climate system both directly and indirectly by modifying cloud properties, yet our understanding of their vertical distribution, chemical composition, mixing state, and sources in the summertime Arctic is incomplete. In situ vertical observations of particle properties in the high Arctic combined with modelling analysis on source attribution are in short supply, particularly during summer. We thus use airborne measurements of aerosol particle composition to demonstrate the strong contrast between particle sources and composition within and above the summertime Arctic boundary layer. In situ measurements from two complementary aerosol mass spectrometers, the Aircraft-based Laser Ablation Aerosol Mass Spectrometer (ALABAMA) and an Aerodyne high-resolution time-of-flight aerosol mass spectrometer (HR-ToF-AMS), are presented alongside black carbon measurements from an single particle soot photometer (SP2). Particle composition analysis was complemented by trace gas measurements, satellite data, and air mass history modelling to attribute particle properties to particle origin and air mass source regions. Particle composition above the summertime Arctic boundary layer was dominated by chemically aged particles, containing elemental carbon, nitrate, ammonium, sulfate, and organic matter. From our analysis, we conclude that the presence of these particles was driven by transport of aerosol and precursor gases from mid-latitudes to Arctic regions. Specifically, elevated concentrations of nitrate, ammonium, and organic matter coincided with time spent over vegetation fires in northern Canada. In parallel, those particles were largely present in high CO environments (> 90 ppbv). Additionally, we observed that the organic-to-sulfate ratio was enhanced with increasing influence from these fires. Besides vegetation fires, particle sources in mid-latitudes further include anthropogenic emissions in Europe, North America, and East Asia. The presence of particles in the Arctic lower free ... |
format |
Article in Journal/Newspaper |
author |
Köllner, F. Schneider, J. Willis, M. Schulz, H. Kunkel, D. Bozem, H. Hoor, P. Klimach, T. Helleis, F. Burkart, J. Leaitch, W. Aliabadi, A. Abbatt, J. Herber, A. Borrmann, S. |
spellingShingle |
Köllner, F. Schneider, J. Willis, M. Schulz, H. Kunkel, D. Bozem, H. Hoor, P. Klimach, T. Helleis, F. Burkart, J. Leaitch, W. Aliabadi, A. Abbatt, J. Herber, A. Borrmann, S. Chemical composition and source attribution of sub-micrometre aerosol particles in the summertime Arctic lower troposphere |
author_facet |
Köllner, F. Schneider, J. Willis, M. Schulz, H. Kunkel, D. Bozem, H. Hoor, P. Klimach, T. Helleis, F. Burkart, J. Leaitch, W. Aliabadi, A. Abbatt, J. Herber, A. Borrmann, S. |
author_sort |
Köllner, F. |
title |
Chemical composition and source attribution of sub-micrometre aerosol particles in the summertime Arctic lower troposphere |
title_short |
Chemical composition and source attribution of sub-micrometre aerosol particles in the summertime Arctic lower troposphere |
title_full |
Chemical composition and source attribution of sub-micrometre aerosol particles in the summertime Arctic lower troposphere |
title_fullStr |
Chemical composition and source attribution of sub-micrometre aerosol particles in the summertime Arctic lower troposphere |
title_full_unstemmed |
Chemical composition and source attribution of sub-micrometre aerosol particles in the summertime Arctic lower troposphere |
title_sort |
chemical composition and source attribution of sub-micrometre aerosol particles in the summertime arctic lower troposphere |
publishDate |
2021 |
url |
http://hdl.handle.net/21.11116/0000-0008-9EF0-7 |
geographic |
Arctic Canada Alabama |
geographic_facet |
Arctic Canada Alabama |
genre |
Arctic black carbon |
genre_facet |
Arctic black carbon |
op_source |
Atmospheric Chemistry and Physics |
op_relation |
info:eu-repo/semantics/altIdentifier/doi/10.5194/acp-21-6509-2021 http://hdl.handle.net/21.11116/0000-0008-9EF0-7 |
op_doi |
https://doi.org/10.5194/acp-21-6509-2021 |
container_title |
Atmospheric Chemistry and Physics |
container_volume |
21 |
container_issue |
8 |
container_start_page |
6509 |
op_container_end_page |
6539 |
_version_ |
1775347769008979968 |