Composition and mixing state of Arctic aerosol and cloud residual particles from long-term single-particle observations at Zeppelin Observatory, Svalbard
The Arctic region is sensitive to climate change and is warming faster than the global average. Aerosol particles change cloud properties by acting as cloud condensation nuclei and ice nucleating particles, thus influencing the Arctic climate system. Therefore, understanding the aerosol particle pro...
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ftcopernicus:oai:publications.copernicus.org:acpd106007 2023-05-15T14:41:19+02:00 Composition and mixing state of Arctic aerosol and cloud residual particles from long-term single-particle observations at Zeppelin Observatory, Svalbard Adachi, Kouji Tobo, Yutaka Koike, Makoto Freitas, Gabriel Zieger, Paul Krejci, Radovan 2022-08-26 application/pdf https://doi.org/10.5194/acp-2022-602 https://acp.copernicus.org/preprints/acp-2022-602/ eng eng doi:10.5194/acp-2022-602 https://acp.copernicus.org/preprints/acp-2022-602/ eISSN: 1680-7324 Text 2022 ftcopernicus https://doi.org/10.5194/acp-2022-602 2022-08-29T16:22:54Z The Arctic region is sensitive to climate change and is warming faster than the global average. Aerosol particles change cloud properties by acting as cloud condensation nuclei and ice nucleating particles, thus influencing the Arctic climate system. Therefore, understanding the aerosol particle properties in the Arctic is needed to interpret and simulate their influences on climate. In this study, we collected ambient aerosol particles using whole-air and PM10 inlets and residual particles of cloud droplets and ice crystals from Arctic low-level clouds (typically, all-liquid or mixed-phase clouds) using a counterflow virtual impactor inlet at the Zeppelin Observatory near Ny-Ålesund, Svalbard, within a time frame of 4 years. We measured the composition and mixing state of individual fine-mode particles using transmission electron microscopy. On the basis of their composition, the aerosol and cloud residual particles were classified into mineral dust, sea salt, K-bearing, sulfate, and carbonaceous particles. The number fraction of aerosol particles showed seasonal changes, with sulfate dominating in summer and sea salt increasing in winter. There was no measurable difference in the fractions between ambient aerosol and cloud residual particles collected at ambient temperatures above 0 °C. On the other hand, cloud residual samples collected at ambient temperatures below 0 °C had several times more sea salt and mineral dust particles and fewer sulfates than ambient aerosol samples, suggesting that sea spray and mineral dust particles may influence the formation of cloud particles in Arctic mixed-phase clouds. We also found that 43 % of mineral dust particles from cloud residual samples were mixed with sea salt, whereas only 18 % of mineral dust particles in ambient aerosol samples were mixed with sea salt. This study highlights the variety of aerosol compositions and mixing states that influence or are influenced by aerosol-cloud interactions in Arctic low-level clouds. Text Arctic Climate change Ny Ålesund Ny-Ålesund Svalbard Copernicus Publications: E-Journals Arctic Ny-Ålesund Svalbard |
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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 Arctic region is sensitive to climate change and is warming faster than the global average. Aerosol particles change cloud properties by acting as cloud condensation nuclei and ice nucleating particles, thus influencing the Arctic climate system. Therefore, understanding the aerosol particle properties in the Arctic is needed to interpret and simulate their influences on climate. In this study, we collected ambient aerosol particles using whole-air and PM10 inlets and residual particles of cloud droplets and ice crystals from Arctic low-level clouds (typically, all-liquid or mixed-phase clouds) using a counterflow virtual impactor inlet at the Zeppelin Observatory near Ny-Ålesund, Svalbard, within a time frame of 4 years. We measured the composition and mixing state of individual fine-mode particles using transmission electron microscopy. On the basis of their composition, the aerosol and cloud residual particles were classified into mineral dust, sea salt, K-bearing, sulfate, and carbonaceous particles. The number fraction of aerosol particles showed seasonal changes, with sulfate dominating in summer and sea salt increasing in winter. There was no measurable difference in the fractions between ambient aerosol and cloud residual particles collected at ambient temperatures above 0 °C. On the other hand, cloud residual samples collected at ambient temperatures below 0 °C had several times more sea salt and mineral dust particles and fewer sulfates than ambient aerosol samples, suggesting that sea spray and mineral dust particles may influence the formation of cloud particles in Arctic mixed-phase clouds. We also found that 43 % of mineral dust particles from cloud residual samples were mixed with sea salt, whereas only 18 % of mineral dust particles in ambient aerosol samples were mixed with sea salt. This study highlights the variety of aerosol compositions and mixing states that influence or are influenced by aerosol-cloud interactions in Arctic low-level clouds. |
format |
Text |
author |
Adachi, Kouji Tobo, Yutaka Koike, Makoto Freitas, Gabriel Zieger, Paul Krejci, Radovan |
spellingShingle |
Adachi, Kouji Tobo, Yutaka Koike, Makoto Freitas, Gabriel Zieger, Paul Krejci, Radovan Composition and mixing state of Arctic aerosol and cloud residual particles from long-term single-particle observations at Zeppelin Observatory, Svalbard |
author_facet |
Adachi, Kouji Tobo, Yutaka Koike, Makoto Freitas, Gabriel Zieger, Paul Krejci, Radovan |
author_sort |
Adachi, Kouji |
title |
Composition and mixing state of Arctic aerosol and cloud residual particles from long-term single-particle observations at Zeppelin Observatory, Svalbard |
title_short |
Composition and mixing state of Arctic aerosol and cloud residual particles from long-term single-particle observations at Zeppelin Observatory, Svalbard |
title_full |
Composition and mixing state of Arctic aerosol and cloud residual particles from long-term single-particle observations at Zeppelin Observatory, Svalbard |
title_fullStr |
Composition and mixing state of Arctic aerosol and cloud residual particles from long-term single-particle observations at Zeppelin Observatory, Svalbard |
title_full_unstemmed |
Composition and mixing state of Arctic aerosol and cloud residual particles from long-term single-particle observations at Zeppelin Observatory, Svalbard |
title_sort |
composition and mixing state of arctic aerosol and cloud residual particles from long-term single-particle observations at zeppelin observatory, svalbard |
publishDate |
2022 |
url |
https://doi.org/10.5194/acp-2022-602 https://acp.copernicus.org/preprints/acp-2022-602/ |
geographic |
Arctic Ny-Ålesund Svalbard |
geographic_facet |
Arctic Ny-Ålesund Svalbard |
genre |
Arctic Climate change Ny Ålesund Ny-Ålesund Svalbard |
genre_facet |
Arctic Climate change Ny Ålesund Ny-Ålesund Svalbard |
op_source |
eISSN: 1680-7324 |
op_relation |
doi:10.5194/acp-2022-602 https://acp.copernicus.org/preprints/acp-2022-602/ |
op_doi |
https://doi.org/10.5194/acp-2022-602 |
_version_ |
1766313118434066432 |