Investigation of new particle formation mechanisms and aerosol processes at Marambio Station, Antarctic Peninsula
Understanding chemical processes leading to the formation of atmospheric aerosol particles is crucial to improve our capabilities in predicting the future climate. However, those mechanisms are still inadequately characterized, especially in polar regions. In this study, we report observations of ne...
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ftdoajarticles:oai:doaj.org/article:bf3a2f619a0d4fd486c706ef8dd1eccb 2023-05-15T13:40:34+02:00 Investigation of new particle formation mechanisms and aerosol processes at Marambio Station, Antarctic Peninsula L. L. J. Quéléver L. Dada E. Asmi J. Lampilahti T. Chan J. E. Ferrara G. E. Copes G. Pérez-Fogwill L. Barreira M. Aurela D. R. Worsnop T. Jokinen M. Sipilä 2022-07-01T00:00:00Z https://doi.org/10.5194/acp-22-8417-2022 https://doaj.org/article/bf3a2f619a0d4fd486c706ef8dd1eccb EN eng Copernicus Publications https://acp.copernicus.org/articles/22/8417/2022/acp-22-8417-2022.pdf https://doaj.org/toc/1680-7316 https://doaj.org/toc/1680-7324 doi:10.5194/acp-22-8417-2022 1680-7316 1680-7324 https://doaj.org/article/bf3a2f619a0d4fd486c706ef8dd1eccb Atmospheric Chemistry and Physics, Vol 22, Pp 8417-8437 (2022) Physics QC1-999 Chemistry QD1-999 article 2022 ftdoajarticles https://doi.org/10.5194/acp-22-8417-2022 2022-12-30T22:48:40Z Understanding chemical processes leading to the formation of atmospheric aerosol particles is crucial to improve our capabilities in predicting the future climate. However, those mechanisms are still inadequately characterized, especially in polar regions. In this study, we report observations of neutral and charged aerosol precursor molecules and chemical cluster composition (qualitatively and quantitatively), as well as air ions and aerosol particle number concentrations and size distributions from the Marambio research station (64 ∘ 15 ′ S, 56 ∘ 38 ′ W), located north of the Antarctic Peninsula. We conducted measurements during the austral summer, between 15 January and 25 February 2018. The scope of this study is to characterize new particle formation (NPF) event parameters and connect our observations of gas-phase compounds with the formation of secondary aerosols to resolve the nucleation mechanisms at the molecular scale. NPF occurred on 40 % of measurement days. All NPF events were observed during days with high solar radiation, mostly with above-freezing temperatures and with low relative humidity. The averaged formation rate for 3 nm particles ( J 3 ) was 0.686 cm −3 s −1 , and the average particle growth rate (GR 3.8–12 nm ) was 4.2 nm h −1 . Analysis of neutral aerosol precursor molecules showed measurable concentrations of iodic acid (IA), sulfuric acid (SA), and methane sulfonic acid (MSA) throughout the entire measurement period with significant increase in MSA and SA concentrations during NPF events. We highlight SA as a key contributor to NPF processes, while IA and MSA likely only contribute to particle growth. Mechanistically, anion clusters containing ammonia and/or dimethylamine (DMA) and SA were identified, suggesting significant concentration of ammonia and DMA as well. Those species are likely contributing to NPF events since SA alone is not sufficient to explain observed nucleation rates. Here, we provide evidence of the marine origin of the measured chemical precursors and discuss their ... Article in Journal/Newspaper Antarc* Antarctic Antarctic Peninsula Directory of Open Access Journals: DOAJ Articles Antarctic The Antarctic Antarctic Peninsula Austral Marambio ENVELOPE(-56.750,-56.750,-64.283,-64.283) Marambio Station ENVELOPE(-56.626,-56.626,-64.242,-64.242) Atmospheric Chemistry and Physics 22 12 8417 8437 |
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 L. L. J. Quéléver L. Dada E. Asmi J. Lampilahti T. Chan J. E. Ferrara G. E. Copes G. Pérez-Fogwill L. Barreira M. Aurela D. R. Worsnop T. Jokinen M. Sipilä Investigation of new particle formation mechanisms and aerosol processes at Marambio Station, Antarctic Peninsula |
topic_facet |
Physics QC1-999 Chemistry QD1-999 |
description |
Understanding chemical processes leading to the formation of atmospheric aerosol particles is crucial to improve our capabilities in predicting the future climate. However, those mechanisms are still inadequately characterized, especially in polar regions. In this study, we report observations of neutral and charged aerosol precursor molecules and chemical cluster composition (qualitatively and quantitatively), as well as air ions and aerosol particle number concentrations and size distributions from the Marambio research station (64 ∘ 15 ′ S, 56 ∘ 38 ′ W), located north of the Antarctic Peninsula. We conducted measurements during the austral summer, between 15 January and 25 February 2018. The scope of this study is to characterize new particle formation (NPF) event parameters and connect our observations of gas-phase compounds with the formation of secondary aerosols to resolve the nucleation mechanisms at the molecular scale. NPF occurred on 40 % of measurement days. All NPF events were observed during days with high solar radiation, mostly with above-freezing temperatures and with low relative humidity. The averaged formation rate for 3 nm particles ( J 3 ) was 0.686 cm −3 s −1 , and the average particle growth rate (GR 3.8–12 nm ) was 4.2 nm h −1 . Analysis of neutral aerosol precursor molecules showed measurable concentrations of iodic acid (IA), sulfuric acid (SA), and methane sulfonic acid (MSA) throughout the entire measurement period with significant increase in MSA and SA concentrations during NPF events. We highlight SA as a key contributor to NPF processes, while IA and MSA likely only contribute to particle growth. Mechanistically, anion clusters containing ammonia and/or dimethylamine (DMA) and SA were identified, suggesting significant concentration of ammonia and DMA as well. Those species are likely contributing to NPF events since SA alone is not sufficient to explain observed nucleation rates. Here, we provide evidence of the marine origin of the measured chemical precursors and discuss their ... |
format |
Article in Journal/Newspaper |
author |
L. L. J. Quéléver L. Dada E. Asmi J. Lampilahti T. Chan J. E. Ferrara G. E. Copes G. Pérez-Fogwill L. Barreira M. Aurela D. R. Worsnop T. Jokinen M. Sipilä |
author_facet |
L. L. J. Quéléver L. Dada E. Asmi J. Lampilahti T. Chan J. E. Ferrara G. E. Copes G. Pérez-Fogwill L. Barreira M. Aurela D. R. Worsnop T. Jokinen M. Sipilä |
author_sort |
L. L. J. Quéléver |
title |
Investigation of new particle formation mechanisms and aerosol processes at Marambio Station, Antarctic Peninsula |
title_short |
Investigation of new particle formation mechanisms and aerosol processes at Marambio Station, Antarctic Peninsula |
title_full |
Investigation of new particle formation mechanisms and aerosol processes at Marambio Station, Antarctic Peninsula |
title_fullStr |
Investigation of new particle formation mechanisms and aerosol processes at Marambio Station, Antarctic Peninsula |
title_full_unstemmed |
Investigation of new particle formation mechanisms and aerosol processes at Marambio Station, Antarctic Peninsula |
title_sort |
investigation of new particle formation mechanisms and aerosol processes at marambio station, antarctic peninsula |
publisher |
Copernicus Publications |
publishDate |
2022 |
url |
https://doi.org/10.5194/acp-22-8417-2022 https://doaj.org/article/bf3a2f619a0d4fd486c706ef8dd1eccb |
long_lat |
ENVELOPE(-56.750,-56.750,-64.283,-64.283) ENVELOPE(-56.626,-56.626,-64.242,-64.242) |
geographic |
Antarctic The Antarctic Antarctic Peninsula Austral Marambio Marambio Station |
geographic_facet |
Antarctic The Antarctic Antarctic Peninsula Austral Marambio Marambio Station |
genre |
Antarc* Antarctic Antarctic Peninsula |
genre_facet |
Antarc* Antarctic Antarctic Peninsula |
op_source |
Atmospheric Chemistry and Physics, Vol 22, Pp 8417-8437 (2022) |
op_relation |
https://acp.copernicus.org/articles/22/8417/2022/acp-22-8417-2022.pdf https://doaj.org/toc/1680-7316 https://doaj.org/toc/1680-7324 doi:10.5194/acp-22-8417-2022 1680-7316 1680-7324 https://doaj.org/article/bf3a2f619a0d4fd486c706ef8dd1eccb |
op_doi |
https://doi.org/10.5194/acp-22-8417-2022 |
container_title |
Atmospheric Chemistry and Physics |
container_volume |
22 |
container_issue |
12 |
container_start_page |
8417 |
op_container_end_page |
8437 |
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1766137012993130496 |