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Secondary aerosol f...
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Xavier, CarltonUniversity of Helsinki
(author)
Secondary aerosol formation in marine Arctic environments : a model measurement comparison at Ny-Ålesund
- Article/chapterEnglish2022
Publisher, publication year, extent ...
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2022-08-04
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Copernicus GmbH,2022
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printrdacarrier
Numbers
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LIBRIS-ID:oai:DiVA.org:su-207993
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https://urn.kb.se/resolve?urn=urn:nbn:se:su:diva-207993URI
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https://doi.org/10.5194/acp-22-10023-2022DOI
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https://lup.lub.lu.se/record/971a319b-fb11-4745-b90c-1f201bbabc5dURI
Supplementary language notes
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Language:English
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Summary in:English
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Classification
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Subject category:ref swepub-contenttype
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Subject category:art swepub-publicationtype
Notes
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In this study, we modeled the aerosol particle formation along air mass trajectories arriving at the remote Arctic research stations Gruvebadet (67 m a.s.l.) and Zeppelin (474 m a.s.l.), Ny-Ålesund, during May 2018. The aim of this study was to improve our understanding of processes governing secondary aerosol formation in remote Arctic marine environments. We run the Lagrangian chemistry transport model ADCHEM, along air mass trajectories generated with FLEXPART v10.4. The air masses arriving at Ny-Ålesund spent most of their time over the open ice-free ocean. In order to capture the secondary aerosol formation from the DMS emitted by phytoplankton from the ocean surface, we implemented a recently developed comprehensive DMS and halogen multi-phase oxidation chemistry scheme, coupled with the widely used Master Chemical Mechanism (MCM).The modeled median particle number size distributions are in close agreement with the observations in the marine-influenced boundary layer near-sea-surface Gruvebadet site. However, while the model reproduces the accumulation mode particle number concentrations at Zeppelin, it overestimates the Aitken mode particle number concentrations by a factor of ∼5.5. We attribute this to the deficiency of the model to capture the complex orographic effects on the boundary layer dynamics at Ny-Ålesund. However, the model reproduces the average vertical particle number concentration profiles within the boundary layer (0–600 m a.s.l.) above Gruvebadet, as measured with condensation particle counters (CPCs) on board an unmanned aircraft system (UAS).The model successfully reproduces the observed Hoppel minima, often seen in particle number size distributions at Ny-Ålesund. The model also supports the previous experimental findings that ion-mediated H2SO4–NH3 nucleation can explain the observed new particle formation in the marine Arctic boundary layer in the vicinity of Ny-Ålesund. Precursors resulting from gas- and aqueous-phase DMS chemistry contribute to the subsequent growth of the secondary aerosols. The growth of particles is primarily driven via H2SO4 condensation and formation of methane sulfonic acid (MSA) through the aqueous-phase ozonolysis of methane sulfinic acid (MSIA) in cloud and deliquescent droplets.
Subject headings and genre
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Baykara, MetinIstanbul Technical University,University of Helsinki
(author)
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Wollesen De Jonge, RobinLund University,Lunds universitet,MERGE: ModElling the Regional and Global Earth system,Centrum för miljö- och klimatvetenskap (CEC),Naturvetenskapliga fakulteten,Kärnfysik,Fysiska institutionen,Institutioner vid LTH,Lunds Tekniska Högskola,LTH profilområde: Aerosoler,LTH profilområden,Centre for Environmental and Climate Science (CEC),Faculty of Science,Nuclear physics,Department of Physics,Departments at LTH,Faculty of Engineering, LTH,LTH Profile Area: Aerosols,LTH Profile areas,Faculty of Engineering, LTH(Swepub:lu)ro5626de
(author)
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Altstädter, BarbaraTechnical University of Braunschweig
(author)
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Clusius, PetriUniversity of Helsinki
(author)
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Vakkari, VilleFinnish Meteorological Institute,North-West University
(author)
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Thakur, RoselineUniversity of Helsinki
(author)
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Beck, LisaUniversity of Helsinki
(author)
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Becagli, SilviaUniversity of Florence
(author)
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Severi, MirkoUniversity of Florence
(author)
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Traversi, RitaUniversity of Florence
(author)
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Krejci, RadovanStockholm University,Stockholms universitet,Institutionen för miljövetenskap(Swepub:su)krejc
(author)
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Tunved, PeterStockholm University,Stockholms universitet,Institutionen för miljövetenskap(Swepub:su)tunve
(author)
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Mazzola, Mauro
(author)
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Wehner, BirgitLeibniz Institute for Tropospheric Research (TROPOS)
(author)
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Sipilä, MikkoUniversity of Helsinki
(author)
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Kulmala, MarkkuUniversity of Helsinki
(author)
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Boy, MichaelLappeenranta University Of Technology (LUT),University of Helsinki
(author)
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Roldin, PontusLund University,Lunds universitet,MERGE: ModElling the Regional and Global Earth system,Centrum för miljö- och klimatvetenskap (CEC),Naturvetenskapliga fakulteten,Kärnfysik,Fysiska institutionen,Institutioner vid LTH,Lunds Tekniska Högskola,LTH profilområde: Aerosoler,LTH profilområden,Centre for Environmental and Climate Science (CEC),Faculty of Science,Nuclear physics,Department of Physics,Departments at LTH,Faculty of Engineering, LTH,LTH Profile Area: Aerosols,LTH Profile areas,Faculty of Engineering, LTH(Swepub:lu)nucl-pur
(author)
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University of HelsinkiIstanbul Technical University
(creator_code:org_t)
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In:Atmospheric Chemistry And Physics: Copernicus GmbH22:15, s. 10023-100431680-73161680-7324
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Xavier, Carlton
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Baykara, Metin
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Altstädter, Barb ...
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Clusius, Petri
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Vakkari, Ville
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Thakur, Roseline
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Beck, Lisa
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Tunved, Peter
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Mazzola, Mauro
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Sipilä, Mikko
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Boy, Michael
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