The importance of Aitken mode aerosol particles for cloud sustenance in the summertime high Arctic – a simulation study supported by observational data
The potential importance of Aitken mode particles (diameters ∼ 25–80 nm) for stratiform mixed-phase clouds in the summertime high Arctic ( >80 ∘ N) has been investigated using two large-eddy simulation models. We find that, in both models, Aitken mode particles significantly affect the simulated...
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ftdoajarticles:oai:doaj.org/article:3b83e253a73043078f41c03feec50db1 2023-05-15T14:48:14+02:00 The importance of Aitken mode aerosol particles for cloud sustenance in the summertime high Arctic – a simulation study supported by observational data I. Bulatovic A. L. Igel C. Leck J. Heintzenberg I. Riipinen A. M. L. Ekman 2021-03-01T00:00:00Z https://doi.org/10.5194/acp-21-3871-2021 https://doaj.org/article/3b83e253a73043078f41c03feec50db1 EN eng Copernicus Publications https://acp.copernicus.org/articles/21/3871/2021/acp-21-3871-2021.pdf https://doaj.org/toc/1680-7316 https://doaj.org/toc/1680-7324 doi:10.5194/acp-21-3871-2021 1680-7316 1680-7324 https://doaj.org/article/3b83e253a73043078f41c03feec50db1 Atmospheric Chemistry and Physics, Vol 21, Pp 3871-3897 (2021) Physics QC1-999 Chemistry QD1-999 article 2021 ftdoajarticles https://doi.org/10.5194/acp-21-3871-2021 2022-12-31T10:53:42Z The potential importance of Aitken mode particles (diameters ∼ 25–80 nm) for stratiform mixed-phase clouds in the summertime high Arctic ( >80 ∘ N) has been investigated using two large-eddy simulation models. We find that, in both models, Aitken mode particles significantly affect the simulated microphysical and radiative properties of the cloud and can help sustain the cloud when accumulation mode concentrations are low ( < 10–20 cm −3 ), even when the particles have low hygroscopicity (hygroscopicity parameter – κ =0.1 ). However, the influence of the Aitken mode decreases if the overall liquid water content of the cloud is low, either due to a higher ice fraction or due to low radiative cooling rates. An analysis of the simulated supersaturation (ss) statistics shows that the ss frequently reaches 0.5 % and sometimes even exceeds 1 %, which confirms that Aitken mode particles can be activated. The modelling results are in qualitative agreement with observations of the Hoppel minimum obtained from four different expeditions in the high Arctic. Our findings highlight the importance of better understanding Aitken mode particle formation, chemical properties and emissions, particularly in clean environments such as the high Arctic. Article in Journal/Newspaper Arctic Directory of Open Access Journals: DOAJ Articles Aitken ENVELOPE(-44.516,-44.516,-60.733,-60.733) Arctic Atmospheric Chemistry and Physics 21 5 3871 3897 |
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 I. Bulatovic A. L. Igel C. Leck J. Heintzenberg I. Riipinen A. M. L. Ekman The importance of Aitken mode aerosol particles for cloud sustenance in the summertime high Arctic – a simulation study supported by observational data |
topic_facet |
Physics QC1-999 Chemistry QD1-999 |
description |
The potential importance of Aitken mode particles (diameters ∼ 25–80 nm) for stratiform mixed-phase clouds in the summertime high Arctic ( >80 ∘ N) has been investigated using two large-eddy simulation models. We find that, in both models, Aitken mode particles significantly affect the simulated microphysical and radiative properties of the cloud and can help sustain the cloud when accumulation mode concentrations are low ( < 10–20 cm −3 ), even when the particles have low hygroscopicity (hygroscopicity parameter – κ =0.1 ). However, the influence of the Aitken mode decreases if the overall liquid water content of the cloud is low, either due to a higher ice fraction or due to low radiative cooling rates. An analysis of the simulated supersaturation (ss) statistics shows that the ss frequently reaches 0.5 % and sometimes even exceeds 1 %, which confirms that Aitken mode particles can be activated. The modelling results are in qualitative agreement with observations of the Hoppel minimum obtained from four different expeditions in the high Arctic. Our findings highlight the importance of better understanding Aitken mode particle formation, chemical properties and emissions, particularly in clean environments such as the high Arctic. |
format |
Article in Journal/Newspaper |
author |
I. Bulatovic A. L. Igel C. Leck J. Heintzenberg I. Riipinen A. M. L. Ekman |
author_facet |
I. Bulatovic A. L. Igel C. Leck J. Heintzenberg I. Riipinen A. M. L. Ekman |
author_sort |
I. Bulatovic |
title |
The importance of Aitken mode aerosol particles for cloud sustenance in the summertime high Arctic – a simulation study supported by observational data |
title_short |
The importance of Aitken mode aerosol particles for cloud sustenance in the summertime high Arctic – a simulation study supported by observational data |
title_full |
The importance of Aitken mode aerosol particles for cloud sustenance in the summertime high Arctic – a simulation study supported by observational data |
title_fullStr |
The importance of Aitken mode aerosol particles for cloud sustenance in the summertime high Arctic – a simulation study supported by observational data |
title_full_unstemmed |
The importance of Aitken mode aerosol particles for cloud sustenance in the summertime high Arctic – a simulation study supported by observational data |
title_sort |
importance of aitken mode aerosol particles for cloud sustenance in the summertime high arctic – a simulation study supported by observational data |
publisher |
Copernicus Publications |
publishDate |
2021 |
url |
https://doi.org/10.5194/acp-21-3871-2021 https://doaj.org/article/3b83e253a73043078f41c03feec50db1 |
long_lat |
ENVELOPE(-44.516,-44.516,-60.733,-60.733) |
geographic |
Aitken Arctic |
geographic_facet |
Aitken Arctic |
genre |
Arctic |
genre_facet |
Arctic |
op_source |
Atmospheric Chemistry and Physics, Vol 21, Pp 3871-3897 (2021) |
op_relation |
https://acp.copernicus.org/articles/21/3871/2021/acp-21-3871-2021.pdf https://doaj.org/toc/1680-7316 https://doaj.org/toc/1680-7324 doi:10.5194/acp-21-3871-2021 1680-7316 1680-7324 https://doaj.org/article/3b83e253a73043078f41c03feec50db1 |
op_doi |
https://doi.org/10.5194/acp-21-3871-2021 |
container_title |
Atmospheric Chemistry and Physics |
container_volume |
21 |
container_issue |
5 |
container_start_page |
3871 |
op_container_end_page |
3897 |
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1766319332798758912 |