Differing Mechanisms of New Particle Formation at Two Arctic Sites
New particle formation in the Arctic atmosphere is an important source of aerosol particles. Understanding the processes of Arctic secondary aerosol formation is crucial due to their significant impact on cloud properties and therefore Arctic amplification. We observed the molecular formation of new...
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2020
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ftuniaarhuspubl:oai:pure.atira.dk:publications/89fdcf04-b5f2-4786-ad21-96ecc6c69c07 2023-05-15T14:23:38+02:00 Differing Mechanisms of New Particle Formation at Two Arctic Sites Beck, Lisa Massling, Andreas Sipilä, Mikko Lange, Robert Vitale, Vito 2020-12-28 https://pure.au.dk/portal/da/publications/differing-mechanisms-of-new-particle-formation-at-two-arctic-sites(89fdcf04-b5f2-4786-ad21-96ecc6c69c07).html https://doi.org/10.1029/2020GL091334 eng eng info:eu-repo/semantics/openAccess Beck , L , Massling , A , Sipilä , M , Lange , R & Vitale , V 2020 , ' Differing Mechanisms of New Particle Formation at Two Arctic Sites ' , Geophysical Research Letters , vol. 48 , no. 4 . https://doi.org/10.1029/2020GL091334 article 2020 ftuniaarhuspubl https://doi.org/10.1029/2020GL091334 2021-03-03T23:45:15Z New particle formation in the Arctic atmosphere is an important source of aerosol particles. Understanding the processes of Arctic secondary aerosol formation is crucial due to their significant impact on cloud properties and therefore Arctic amplification. We observed the molecular formation of new particles from low‐volatility vapors at two Arctic sites with differing surroundings. In Svalbard, sulfuric acid (SA) and methane sulfonic acid (MSA) contribute to the formation of secondary aerosol and to some extent to cloud condensation nuclei (CCN). This occurs via ion‐induced nucleation of SA and NH3 and subsequent growth by mainly SA and MSA condensation during springtime and highly oxygenated organic molecules during summertime. By contrast, in an ice‐covered region around Villum, we observed new particle formation driven by iodic acid but its concentration was insufficient to grow nucleated particles to CCN sizes. Our results provide new insight about sources and precursors of Arctic secondary aerosol particles. Article in Journal/Newspaper Arctic Arctic Svalbard Aarhus University: Research Arctic Svalbard Geophysical Research Letters 48 4 |
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Open Polar |
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Aarhus University: Research |
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ftuniaarhuspubl |
language |
English |
description |
New particle formation in the Arctic atmosphere is an important source of aerosol particles. Understanding the processes of Arctic secondary aerosol formation is crucial due to their significant impact on cloud properties and therefore Arctic amplification. We observed the molecular formation of new particles from low‐volatility vapors at two Arctic sites with differing surroundings. In Svalbard, sulfuric acid (SA) and methane sulfonic acid (MSA) contribute to the formation of secondary aerosol and to some extent to cloud condensation nuclei (CCN). This occurs via ion‐induced nucleation of SA and NH3 and subsequent growth by mainly SA and MSA condensation during springtime and highly oxygenated organic molecules during summertime. By contrast, in an ice‐covered region around Villum, we observed new particle formation driven by iodic acid but its concentration was insufficient to grow nucleated particles to CCN sizes. Our results provide new insight about sources and precursors of Arctic secondary aerosol particles. |
format |
Article in Journal/Newspaper |
author |
Beck, Lisa Massling, Andreas Sipilä, Mikko Lange, Robert Vitale, Vito |
spellingShingle |
Beck, Lisa Massling, Andreas Sipilä, Mikko Lange, Robert Vitale, Vito Differing Mechanisms of New Particle Formation at Two Arctic Sites |
author_facet |
Beck, Lisa Massling, Andreas Sipilä, Mikko Lange, Robert Vitale, Vito |
author_sort |
Beck, Lisa |
title |
Differing Mechanisms of New Particle Formation at Two Arctic Sites |
title_short |
Differing Mechanisms of New Particle Formation at Two Arctic Sites |
title_full |
Differing Mechanisms of New Particle Formation at Two Arctic Sites |
title_fullStr |
Differing Mechanisms of New Particle Formation at Two Arctic Sites |
title_full_unstemmed |
Differing Mechanisms of New Particle Formation at Two Arctic Sites |
title_sort |
differing mechanisms of new particle formation at two arctic sites |
publishDate |
2020 |
url |
https://pure.au.dk/portal/da/publications/differing-mechanisms-of-new-particle-formation-at-two-arctic-sites(89fdcf04-b5f2-4786-ad21-96ecc6c69c07).html https://doi.org/10.1029/2020GL091334 |
geographic |
Arctic Svalbard |
geographic_facet |
Arctic Svalbard |
genre |
Arctic Arctic Svalbard |
genre_facet |
Arctic Arctic Svalbard |
op_source |
Beck , L , Massling , A , Sipilä , M , Lange , R & Vitale , V 2020 , ' Differing Mechanisms of New Particle Formation at Two Arctic Sites ' , Geophysical Research Letters , vol. 48 , no. 4 . https://doi.org/10.1029/2020GL091334 |
op_rights |
info:eu-repo/semantics/openAccess |
op_doi |
https://doi.org/10.1029/2020GL091334 |
container_title |
Geophysical Research Letters |
container_volume |
48 |
container_issue |
4 |
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1766296129068072960 |