Diverse sources and aging change the mixing state and ice nucleation properties of aerosol particles over the western Pacific and Southern Ocean
Atmospheric particles can impact cloud formation and play a critical role in regulating cloud properties. However, particle characteristics at the single-particle level and their ability to act as ice-nucleating particles (INPs) over the marine atmosphere are poorly understood. In this study, we pre...
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ftdoajarticles:oai:doaj.org/article:ddeaf507206c4ef5a9fd95814ad4428a 2024-09-15T17:48:17+00:00 Diverse sources and aging change the mixing state and ice nucleation properties of aerosol particles over the western Pacific and Southern Ocean J. Xue T. Zhang K. Park J. Yan Y. J. Yoon J. Park B. Wang 2024-07-01T00:00:00Z https://doi.org/10.5194/acp-24-7731-2024 https://doaj.org/article/ddeaf507206c4ef5a9fd95814ad4428a EN eng Copernicus Publications https://acp.copernicus.org/articles/24/7731/2024/acp-24-7731-2024.pdf https://doaj.org/toc/1680-7316 https://doaj.org/toc/1680-7324 doi:10.5194/acp-24-7731-2024 1680-7316 1680-7324 https://doaj.org/article/ddeaf507206c4ef5a9fd95814ad4428a Atmospheric Chemistry and Physics, Vol 24, Pp 7731-7754 (2024) Physics QC1-999 Chemistry QD1-999 article 2024 ftdoajarticles https://doi.org/10.5194/acp-24-7731-2024 2024-08-05T17:48:59Z Atmospheric particles can impact cloud formation and play a critical role in regulating cloud properties. However, particle characteristics at the single-particle level and their ability to act as ice-nucleating particles (INPs) over the marine atmosphere are poorly understood. In this study, we present micro-spectroscopic characterizations and ice nucleation properties of particles collected during a cruise from South Korea to Antarctica in 2019. Most of the samples were dominated by fresh sea salt, aged sea salt, and sea salt mixed with sulfate particles, with total number percentages ranging from 48 % to 99 % over the western Pacific and the Southern Ocean. The mixing-state index of the particle population ranged from 50 % to 95 % over the Northern Hemisphere and Southern Hemisphere. Multiphase processes on sea salt particles resulted in chlorine deficiency. This selective aging process made the marine particle population more externally mixed. Ice nucleation onset conditions primarily for the deposition mode were measured and the investigated particles showed diverse ice nucleation abilities. The fresh sea salt particles with organic coatings exhibited the highest ice nucleation ability at a relative humidity with respect to ice as low as 121 %. The sea salt mixed sulfate particle was enriched in INPs by a factor of 1.9. Aging processes affected both the mixing state of the particles and their ice nucleation abilities. Our analysis shows that assuming an internally mixed particle population in the marine atmosphere can lead to errors of several orders of magnitude in predicting ice nucleation rates. Article in Journal/Newspaper Antarc* Antarctica Southern Ocean Directory of Open Access Journals: DOAJ Articles Atmospheric Chemistry and Physics 24 13 7731 7754 |
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Open Polar |
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Directory of Open Access Journals: DOAJ Articles |
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English |
topic |
Physics QC1-999 Chemistry QD1-999 |
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Physics QC1-999 Chemistry QD1-999 J. Xue T. Zhang K. Park J. Yan Y. J. Yoon J. Park B. Wang Diverse sources and aging change the mixing state and ice nucleation properties of aerosol particles over the western Pacific and Southern Ocean |
topic_facet |
Physics QC1-999 Chemistry QD1-999 |
description |
Atmospheric particles can impact cloud formation and play a critical role in regulating cloud properties. However, particle characteristics at the single-particle level and their ability to act as ice-nucleating particles (INPs) over the marine atmosphere are poorly understood. In this study, we present micro-spectroscopic characterizations and ice nucleation properties of particles collected during a cruise from South Korea to Antarctica in 2019. Most of the samples were dominated by fresh sea salt, aged sea salt, and sea salt mixed with sulfate particles, with total number percentages ranging from 48 % to 99 % over the western Pacific and the Southern Ocean. The mixing-state index of the particle population ranged from 50 % to 95 % over the Northern Hemisphere and Southern Hemisphere. Multiphase processes on sea salt particles resulted in chlorine deficiency. This selective aging process made the marine particle population more externally mixed. Ice nucleation onset conditions primarily for the deposition mode were measured and the investigated particles showed diverse ice nucleation abilities. The fresh sea salt particles with organic coatings exhibited the highest ice nucleation ability at a relative humidity with respect to ice as low as 121 %. The sea salt mixed sulfate particle was enriched in INPs by a factor of 1.9. Aging processes affected both the mixing state of the particles and their ice nucleation abilities. Our analysis shows that assuming an internally mixed particle population in the marine atmosphere can lead to errors of several orders of magnitude in predicting ice nucleation rates. |
format |
Article in Journal/Newspaper |
author |
J. Xue T. Zhang K. Park J. Yan Y. J. Yoon J. Park B. Wang |
author_facet |
J. Xue T. Zhang K. Park J. Yan Y. J. Yoon J. Park B. Wang |
author_sort |
J. Xue |
title |
Diverse sources and aging change the mixing state and ice nucleation properties of aerosol particles over the western Pacific and Southern Ocean |
title_short |
Diverse sources and aging change the mixing state and ice nucleation properties of aerosol particles over the western Pacific and Southern Ocean |
title_full |
Diverse sources and aging change the mixing state and ice nucleation properties of aerosol particles over the western Pacific and Southern Ocean |
title_fullStr |
Diverse sources and aging change the mixing state and ice nucleation properties of aerosol particles over the western Pacific and Southern Ocean |
title_full_unstemmed |
Diverse sources and aging change the mixing state and ice nucleation properties of aerosol particles over the western Pacific and Southern Ocean |
title_sort |
diverse sources and aging change the mixing state and ice nucleation properties of aerosol particles over the western pacific and southern ocean |
publisher |
Copernicus Publications |
publishDate |
2024 |
url |
https://doi.org/10.5194/acp-24-7731-2024 https://doaj.org/article/ddeaf507206c4ef5a9fd95814ad4428a |
genre |
Antarc* Antarctica Southern Ocean |
genre_facet |
Antarc* Antarctica Southern Ocean |
op_source |
Atmospheric Chemistry and Physics, Vol 24, Pp 7731-7754 (2024) |
op_relation |
https://acp.copernicus.org/articles/24/7731/2024/acp-24-7731-2024.pdf https://doaj.org/toc/1680-7316 https://doaj.org/toc/1680-7324 doi:10.5194/acp-24-7731-2024 1680-7316 1680-7324 https://doaj.org/article/ddeaf507206c4ef5a9fd95814ad4428a |
op_doi |
https://doi.org/10.5194/acp-24-7731-2024 |
container_title |
Atmospheric Chemistry and Physics |
container_volume |
24 |
container_issue |
13 |
container_start_page |
7731 |
op_container_end_page |
7754 |
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1810289446232260608 |