Organic coating on sulfate and soot particles during late summer in the Svalbard Archipelago
Interaction of anthropogenic particles with radiation and clouds plays an important role in Arctic climate change. The mixing state of aerosols is a key parameter to influence aerosol radiation and aerosol–cloud interactions. However, little is known of this parameter in the Arctic, preventing an ac...
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ftdoajarticles:oai:doaj.org/article:86d58cf0ab37423c91992527b477a174 2023-05-15T14:53:32+02:00 Organic coating on sulfate and soot particles during late summer in the Svalbard Archipelago H. Yu W. Li Y. Zhang P. Tunved M. Dall'Osto X. Shen J. Sun X. Zhang J. Zhang Z. Shi 2019-08-01T00:00:00Z https://doi.org/10.5194/acp-19-10433-2019 https://doaj.org/article/86d58cf0ab37423c91992527b477a174 EN eng Copernicus Publications https://www.atmos-chem-phys.net/19/10433/2019/acp-19-10433-2019.pdf https://doaj.org/toc/1680-7316 https://doaj.org/toc/1680-7324 doi:10.5194/acp-19-10433-2019 1680-7316 1680-7324 https://doaj.org/article/86d58cf0ab37423c91992527b477a174 Atmospheric Chemistry and Physics, Vol 19, Pp 10433-10446 (2019) Physics QC1-999 Chemistry QD1-999 article 2019 ftdoajarticles https://doi.org/10.5194/acp-19-10433-2019 2022-12-31T15:19:48Z Interaction of anthropogenic particles with radiation and clouds plays an important role in Arctic climate change. The mixing state of aerosols is a key parameter to influence aerosol radiation and aerosol–cloud interactions. However, little is known of this parameter in the Arctic, preventing an accurate representation of this information in global models. Here we used transmission electron microscopy with energy-dispersive X-ray spectrometry, scanning electron microscopy, nanoscale secondary ion mass spectrometry, and atomic forces microscopy to determine the size and mixing state of individual sulfate and carbonaceous particles at 100 nm to 2 µ m collected in the Svalbard Archipelago in summer. We found that 74 % by number of non-sea-salt sulfate particles were coated with organic matter (OM); 20 % of sulfate particles also had soot inclusions which only appeared in the OM coating. The OM coating is estimated to contribute 63 % of the particle volume on average. To understand how OM coating influences optical properties of sulfate particles, a Mie core–shell model was applied to calculate optical properties of individual sulfate particles. Our result shows that the absorption cross section of individual OM-coated particles significantly increased when assuming the OM coating as light-absorbing brown carbon. Microscopic observations here suggest that OM modulates the mixing structure of fine Arctic sulfate particles, which may determine their hygroscopicity and optical properties. Article in Journal/Newspaper Arctic Climate change Svalbard Directory of Open Access Journals: DOAJ Articles Arctic Svalbard Svalbard Archipelago Atmospheric Chemistry and Physics 19 15 10433 10446 |
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 H. Yu W. Li Y. Zhang P. Tunved M. Dall'Osto X. Shen J. Sun X. Zhang J. Zhang Z. Shi Organic coating on sulfate and soot particles during late summer in the Svalbard Archipelago |
topic_facet |
Physics QC1-999 Chemistry QD1-999 |
description |
Interaction of anthropogenic particles with radiation and clouds plays an important role in Arctic climate change. The mixing state of aerosols is a key parameter to influence aerosol radiation and aerosol–cloud interactions. However, little is known of this parameter in the Arctic, preventing an accurate representation of this information in global models. Here we used transmission electron microscopy with energy-dispersive X-ray spectrometry, scanning electron microscopy, nanoscale secondary ion mass spectrometry, and atomic forces microscopy to determine the size and mixing state of individual sulfate and carbonaceous particles at 100 nm to 2 µ m collected in the Svalbard Archipelago in summer. We found that 74 % by number of non-sea-salt sulfate particles were coated with organic matter (OM); 20 % of sulfate particles also had soot inclusions which only appeared in the OM coating. The OM coating is estimated to contribute 63 % of the particle volume on average. To understand how OM coating influences optical properties of sulfate particles, a Mie core–shell model was applied to calculate optical properties of individual sulfate particles. Our result shows that the absorption cross section of individual OM-coated particles significantly increased when assuming the OM coating as light-absorbing brown carbon. Microscopic observations here suggest that OM modulates the mixing structure of fine Arctic sulfate particles, which may determine their hygroscopicity and optical properties. |
format |
Article in Journal/Newspaper |
author |
H. Yu W. Li Y. Zhang P. Tunved M. Dall'Osto X. Shen J. Sun X. Zhang J. Zhang Z. Shi |
author_facet |
H. Yu W. Li Y. Zhang P. Tunved M. Dall'Osto X. Shen J. Sun X. Zhang J. Zhang Z. Shi |
author_sort |
H. Yu |
title |
Organic coating on sulfate and soot particles during late summer in the Svalbard Archipelago |
title_short |
Organic coating on sulfate and soot particles during late summer in the Svalbard Archipelago |
title_full |
Organic coating on sulfate and soot particles during late summer in the Svalbard Archipelago |
title_fullStr |
Organic coating on sulfate and soot particles during late summer in the Svalbard Archipelago |
title_full_unstemmed |
Organic coating on sulfate and soot particles during late summer in the Svalbard Archipelago |
title_sort |
organic coating on sulfate and soot particles during late summer in the svalbard archipelago |
publisher |
Copernicus Publications |
publishDate |
2019 |
url |
https://doi.org/10.5194/acp-19-10433-2019 https://doaj.org/article/86d58cf0ab37423c91992527b477a174 |
geographic |
Arctic Svalbard Svalbard Archipelago |
geographic_facet |
Arctic Svalbard Svalbard Archipelago |
genre |
Arctic Climate change Svalbard |
genre_facet |
Arctic Climate change Svalbard |
op_source |
Atmospheric Chemistry and Physics, Vol 19, Pp 10433-10446 (2019) |
op_relation |
https://www.atmos-chem-phys.net/19/10433/2019/acp-19-10433-2019.pdf https://doaj.org/toc/1680-7316 https://doaj.org/toc/1680-7324 doi:10.5194/acp-19-10433-2019 1680-7316 1680-7324 https://doaj.org/article/86d58cf0ab37423c91992527b477a174 |
op_doi |
https://doi.org/10.5194/acp-19-10433-2019 |
container_title |
Atmospheric Chemistry and Physics |
container_volume |
19 |
container_issue |
15 |
container_start_page |
10433 |
op_container_end_page |
10446 |
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1766325125265752064 |