Differing mechanisms of new particle formation at two Arctic sites.

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Beck , L , Sarnela , N , Junninen , H , Hoppe , C J M , Garmash , O , Bianchi , F , Riva , M , Rose , C , Peräkylä , O , Wimmer , D , Kausiala , O , Jokinen , T , Ahonen , L , Mikkilä , J , Hakala , J , He , X-C , Kontkanen , J , Wolf , K K E , Cappelletti , D , Mazzola , M , Traversi , R , Petroselli , C , Viola , A P , Vitale , V , Lange , R , Massling , A , Nojgaard , J K , Krejci , R , Karlsson , L , Zieger , P , Jang , S , Lee , K , Vakkari , V , Lampilahti , J , Thakur , R , Leino (os. Paananen) , K , Kangasluoma , J , Duplissy (née Kyrö) , E-M , Siivola , E , Marbouti , M , Tham , Y J , Saiz-Lopez , A , Petäjä , T , Ehn , M , Worsnop , D , Skov , H , Kulmala , M , Kerminen , V-M & Sipilä , M 2021 , ' Differing mechanisms of new particle formation at two Arctic sites. ' , Geophysical Research Letters , vol. 48 , no. 4 , ARTN e2020GL091334 . https://doi.org/10.1029/2020gl091334

Title: Differing mechanisms of new particle formation at two Arctic sites.
Author: Beck, Lisa; Sarnela, Nina; Junninen, Heikki; Hoppe, Clara J.M; Garmash, Olga; Bianchi, Federico; Riva, Matthieu; Rose, Clémence; Peräkylä, Otso; Wimmer, Daniela; Kausiala, Oskari; Jokinen, Tuija; Ahonen, Lauri; Mikkilä, Jyri; Hakala, Jani; He, Xu-Cheng; Kontkanen, Jenni; Wolf, Klara.K.E; Cappelletti, David; Mazzola, Mauro; Traversi, Rita; Petroselli, Chiara; Viola, Angelo.p; Vitale, Vito; Lange, Robert; Massling, Andreas; Nojgaard, Jakob k; Krejci, Radovan; Karlsson, Linn; Zieger, Paul; Jang, Sehyun; Lee, Kitack; Vakkari, Ville; Lampilahti, Janne; Thakur, Roseline; Leino (os. Paananen), Katri; Kangasluoma, Juha; Duplissy (née Kyrö), Ella-Maria; Siivola, Erkki; Marbouti, Marjan; Tham, Yee Jun; Saiz-Lopez, Alfonso; Petäjä, Tuukka; Ehn, Mikael; Worsnop, Douglas; Skov, Henrik; Kulmala, Markku; Kerminen, Veli-Matti; Sipilä, Mikko
Contributor: University of Helsinki, INAR Physics
University of Helsinki, Polar and arctic atmospheric research (PANDA)
University of Helsinki, INAR Physics
University of Helsinki, INAR Physics
University of Helsinki, Polar and arctic atmospheric research (PANDA)
University of Helsinki, INAR Physics
University of Helsinki, INAR Physics
University of Helsinki, INAR Physics
University of Helsinki, INAR Physics
University of Helsinki, Institute for Atmospheric and Earth System Research (INAR)
University of Helsinki, Institute for Atmospheric and Earth System Research (INAR)
University of Helsinki, INAR Physics
University of Helsinki, INAR Physics
University of Helsinki, INAR Physics
University of Helsinki, Air quality research group
University of Helsinki, Stockholm University
University of Helsinki, North-West University
University of Helsinki, INAR Physics
University of Helsinki, INAR Physics
University of Helsinki, INAR Physics
University of Helsinki, INAR Physics
University of Helsinki, Department of Agricultural Sciences
University of Helsinki, Institute for Atmospheric and Earth System Research (INAR)
University of Helsinki, Institute for Atmospheric and Earth System Research (INAR)
University of Helsinki, Institute for Atmospheric and Earth System Research (INAR)
University of Helsinki, Institute for Atmospheric and Earth System Research (INAR)
University of Helsinki, INAR Physics
University of Helsinki, Polar and arctic atmospheric research (PANDA)
University of Helsinki, Institute for Atmospheric and Earth System Research (INAR)
University of Helsinki, Global Atmosphere-Earth surface feedbacks
University of Helsinki, Institute for Atmospheric and Earth System Research (INAR)
Date: 2021-02-28
Language: eng
Number of pages: 11
Belongs to series: Geophysical Research Letters
ISSN: 0094-8276
URI: http://hdl.handle.net/10138/326936
Abstract: 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.
Subject: 114 Physical sciences
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