Show simple item record

dc.contributor.authorVäisänen, Olli
dc.contributor.authorHao, Liqing
dc.contributor.authorVirtanen, Annele
dc.contributor.authorRomakkaniemi, Sami
dc.date.accessioned2020-10-16T05:53:44Z
dc.date.available2020-10-16T05:53:44Z
dc.date.issued2020
dc.identifier.urihttps://erepo.uef.fi/handle/123456789/8380
dc.description.abstractIn this study, we utilize aerosol mass spectrometer (AMS) and multi-angle absorption photometer (MAAP) measurements to assess the most predominant source regions of various atmospheric aerosol constituents transported to Eastern Finland. The non-refractory composition data from the AMS were measured during three intensive measurements campaigns in autumn 2012, 2014 and 2016, whereas the continuous long-term measurements on equivalent black carbon were conducted in 2012–2017. According to observations, the highest concentrations of particulate organics, sulphate, ammonium and black carbon originated from western parts of Russia and Eastern Europe, whereas Central Europe showed lesser contribution. In addition, exceptionally high concentrations of sulphate and ammonium were associated with the Timan-Pechora basin located in north-western Russia. Assumingly, this phenomenon could be linked to intensive gas flaring activities taking place in the area. We also performed positive matrix factorization analysis of organic fraction measured by the AMS. The trajectory analysis revealed increased concentration fields (CF) for low-volatility oxygenated organic aerosol (LVOOA) and hydrocarbon-like organic aerosol (HOA) in the same areas as for sulphate and ammonium. Meanwhile, the CF of semi-volatile oxygenated organic aerosol (SVOOA) suggested a local origin. To summarize, our results suggest that Western Russia and Eastern Europe are the most important source regions of several long-range transported aerosol constituents for Eastern Finland. Besides influencing the air quality and aerosol chemical composition on a local scale, these regions may also play a crucial role as the pollutants are transported further north, towards the vulnerable Arctic region.
dc.language.isoenglanti
dc.publisherInforma UK Limited
dc.relation.ispartofseriesTellus series b: chemical and physical meteorology
dc.relation.urihttp://dx.doi.org/10.1080/16000889.2020.1799687
dc.rightsCC BY http://creativecommons.org/licenses/by/4.0/
dc.subjecttrajectory analysis
dc.subjectaerosol mass spectrometry
dc.subjectblack carbon
dc.titleTrajectory-based analysis on the source areas and transportation pathways of atmospheric particulate matter over Eastern Finland
dc.description.versionpublished version
dc.contributor.departmentDepartment of Applied Physics, activities
uef.solecris.id72929552en
dc.type.publicationTieteelliset aikakauslehtiartikkelit
dc.rights.accessrights© 2020 The Authors
dc.relation.projectidinfo:eu-repo/grantAgreement/EC/H2020-EU.3.5.1./21205/EU/FORCeS Constrained aerosol forcing for improved climate projections/FORCeS
dc.relation.doi10.1080/16000889.2020.1799687
dc.description.reviewstatuspeerReviewed
dc.relation.articlenumber1799687
dc.relation.issn0280-6509
dc.relation.issue1
dc.relation.volume72
dc.rights.accesslevelopenAccess
dc.type.okmA1
uef.solecris.openaccessOpen access -julkaisukanavassa ilmestynyt julkaisu


Files in this item

Thumbnail

This item appears in the following Collection(s)

Show simple item record