Rapid growth of Aitken-mode particles during Arctic summer by fog chemical processing and its implication
Abstract In the Arctic, new particle formation (NPF) and subsequent growth processes are the keys to produce Aitken-mode particles, which under certain conditions can act as cloud condensation nuclei (CCNs). The activation of Aitken-mode particles increases the CCN budget of Arctic low-level clouds...
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Language: | English |
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Oxford University Press (OUP)
2023
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Online Access: | http://dx.doi.org/10.1093/pnasnexus/pgad124 https://academic.oup.com/pnasnexus/advance-article-pdf/doi/10.1093/pnasnexus/pgad124/49808248/pgad124.pdf https://academic.oup.com/pnasnexus/article-pdf/2/5/pgad124/51001878/pgad124.pdf |
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croxfordunivpr:10.1093/pnasnexus/pgad124 2024-06-23T07:49:07+00:00 Rapid growth of Aitken-mode particles during Arctic summer by fog chemical processing and its implication Kecorius, Simonas Hoffmann, Erik H Tilgner, Andreas Barrientos-Velasco, Carola van Pinxteren, Manuela Zeppenfeld, Sebastian Vogl, Teresa Madueño, Leizel Lovrić, Mario Wiedensohler, Alfred Kulmala, Markku Paasonen, Pauli Herrmann, Hartmut Yortsos, Yannis 2023 http://dx.doi.org/10.1093/pnasnexus/pgad124 https://academic.oup.com/pnasnexus/advance-article-pdf/doi/10.1093/pnasnexus/pgad124/49808248/pgad124.pdf https://academic.oup.com/pnasnexus/article-pdf/2/5/pgad124/51001878/pgad124.pdf en eng Oxford University Press (OUP) https://creativecommons.org/licenses/by-nc-nd/4.0/ PNAS Nexus volume 2, issue 5 ISSN 2752-6542 journal-article 2023 croxfordunivpr https://doi.org/10.1093/pnasnexus/pgad124 2024-06-04T06:08:56Z Abstract In the Arctic, new particle formation (NPF) and subsequent growth processes are the keys to produce Aitken-mode particles, which under certain conditions can act as cloud condensation nuclei (CCNs). The activation of Aitken-mode particles increases the CCN budget of Arctic low-level clouds and, accordingly, affects Arctic climate forcing. However, the growth mechanism of Aitken-mode particles from NPF into CCN range in the summertime Arctic boundary layer remains a subject of current research. In this combined Arctic cruise field and modeling study, we investigated Aitken-mode particle growth to sizes above 80 nm. A mechanism is suggested that explains how Aitken-mode particles can become CCN without requiring high water vapor supersaturation. Model simulations suggest the formation of semivolatile compounds, such as methanesulfonic acid (MSA) in fog droplets. When the fog droplets evaporate, these compounds repartition from CCNs into the gas phase and into the condensed phase of nonactivated Aitken-mode particles. For MSA, a mass increase factor of 18 is modeled. The postfog redistribution mechanism of semivolatile acidic and basic compounds could explain the observed growth of >20 nm h−1 for 60-nm particles to sizes above 100 nm. Overall, this study implies that the increasing frequency of NPF and fog-related particle processing can affect Arctic cloud properties in the summertime boundary layer. Article in Journal/Newspaper Arctic Oxford University Press Aitken ENVELOPE(-44.516,-44.516,-60.733,-60.733) Arctic PNAS Nexus 2 5 |
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Open Polar |
collection |
Oxford University Press |
op_collection_id |
croxfordunivpr |
language |
English |
description |
Abstract In the Arctic, new particle formation (NPF) and subsequent growth processes are the keys to produce Aitken-mode particles, which under certain conditions can act as cloud condensation nuclei (CCNs). The activation of Aitken-mode particles increases the CCN budget of Arctic low-level clouds and, accordingly, affects Arctic climate forcing. However, the growth mechanism of Aitken-mode particles from NPF into CCN range in the summertime Arctic boundary layer remains a subject of current research. In this combined Arctic cruise field and modeling study, we investigated Aitken-mode particle growth to sizes above 80 nm. A mechanism is suggested that explains how Aitken-mode particles can become CCN without requiring high water vapor supersaturation. Model simulations suggest the formation of semivolatile compounds, such as methanesulfonic acid (MSA) in fog droplets. When the fog droplets evaporate, these compounds repartition from CCNs into the gas phase and into the condensed phase of nonactivated Aitken-mode particles. For MSA, a mass increase factor of 18 is modeled. The postfog redistribution mechanism of semivolatile acidic and basic compounds could explain the observed growth of >20 nm h−1 for 60-nm particles to sizes above 100 nm. Overall, this study implies that the increasing frequency of NPF and fog-related particle processing can affect Arctic cloud properties in the summertime boundary layer. |
author2 |
Yortsos, Yannis |
format |
Article in Journal/Newspaper |
author |
Kecorius, Simonas Hoffmann, Erik H Tilgner, Andreas Barrientos-Velasco, Carola van Pinxteren, Manuela Zeppenfeld, Sebastian Vogl, Teresa Madueño, Leizel Lovrić, Mario Wiedensohler, Alfred Kulmala, Markku Paasonen, Pauli Herrmann, Hartmut |
spellingShingle |
Kecorius, Simonas Hoffmann, Erik H Tilgner, Andreas Barrientos-Velasco, Carola van Pinxteren, Manuela Zeppenfeld, Sebastian Vogl, Teresa Madueño, Leizel Lovrić, Mario Wiedensohler, Alfred Kulmala, Markku Paasonen, Pauli Herrmann, Hartmut Rapid growth of Aitken-mode particles during Arctic summer by fog chemical processing and its implication |
author_facet |
Kecorius, Simonas Hoffmann, Erik H Tilgner, Andreas Barrientos-Velasco, Carola van Pinxteren, Manuela Zeppenfeld, Sebastian Vogl, Teresa Madueño, Leizel Lovrić, Mario Wiedensohler, Alfred Kulmala, Markku Paasonen, Pauli Herrmann, Hartmut |
author_sort |
Kecorius, Simonas |
title |
Rapid growth of Aitken-mode particles during Arctic summer by fog chemical processing and its implication |
title_short |
Rapid growth of Aitken-mode particles during Arctic summer by fog chemical processing and its implication |
title_full |
Rapid growth of Aitken-mode particles during Arctic summer by fog chemical processing and its implication |
title_fullStr |
Rapid growth of Aitken-mode particles during Arctic summer by fog chemical processing and its implication |
title_full_unstemmed |
Rapid growth of Aitken-mode particles during Arctic summer by fog chemical processing and its implication |
title_sort |
rapid growth of aitken-mode particles during arctic summer by fog chemical processing and its implication |
publisher |
Oxford University Press (OUP) |
publishDate |
2023 |
url |
http://dx.doi.org/10.1093/pnasnexus/pgad124 https://academic.oup.com/pnasnexus/advance-article-pdf/doi/10.1093/pnasnexus/pgad124/49808248/pgad124.pdf https://academic.oup.com/pnasnexus/article-pdf/2/5/pgad124/51001878/pgad124.pdf |
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 |
PNAS Nexus volume 2, issue 5 ISSN 2752-6542 |
op_rights |
https://creativecommons.org/licenses/by-nc-nd/4.0/ |
op_doi |
https://doi.org/10.1093/pnasnexus/pgad124 |
container_title |
PNAS Nexus |
container_volume |
2 |
container_issue |
5 |
_version_ |
1802639395460743168 |