Atmospheric particle formation events at Värriö measurement station in Finnish Lapland 1998-2002
During the calendar years 1998-2002, 147 clear 8nm diameter particle formation events have been identified at the SMEAR I station in Värriö, northern Finland. The events have been classified in detail according to the particle formation rate, growth rate, event starting time, diffe...
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| Format: | Article |
| Language: | English |
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Copernicus Publications
2004-01-01
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| Series: | Atmospheric Chemistry and Physics |
| Online Access: | http://www.atmos-chem-phys.net/4/2015/2004/acp-4-2015-2004.pdf |
| _version_ | 1819238244509810688 |
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| author | H. Vehkamäki M. Dal Maso T. Hussein R. Flanagan R. Flanagan A. Hyvärinen J. Lauros P. Merikanto M. Mönkkönen K. Pihlatie K. Salminen L. Sogacheva T. Thum T. M. Ruuskanen P. Keronen P. P. Aalto P. Hari K. E. J. Lehtinen Ü Rannik M. Kulmala |
| author_facet | H. Vehkamäki M. Dal Maso T. Hussein R. Flanagan R. Flanagan A. Hyvärinen J. Lauros P. Merikanto M. Mönkkönen K. Pihlatie K. Salminen L. Sogacheva T. Thum T. M. Ruuskanen P. Keronen P. P. Aalto P. Hari K. E. J. Lehtinen Ü Rannik M. Kulmala |
| author_sort | H. Vehkamäki |
| collection | DOAJ |
| description | During the calendar years 1998-2002, 147 clear 8nm diameter particle formation events have been identified at the SMEAR I station in Värriö, northern Finland. The events have been classified in detail according to the particle formation rate, growth rate, event starting time, different trace gas concentrations and pre-existing particle concentrations as well as various meteorological conditions. The frequency of particle formation and growth events was highest during the spring months between March and May, suggesting that increasing biological activity might produce the precursor gases for particle formation. The apparent 8nm particle formation rates were around 0.1 /cm<sup>3</sup>s, and they were uncorrelated with growth rates that varied between 0.5 and 10nm/h. The air masses with clearly elevated sulphur dioxide concentrations (above 1.6ppb) came, as expected, from the direction of the Nikel and Monschegorsk smelters. Only 15 formation events can be explained by the pollution plume from these sources. |
| first_indexed | 2024-12-23T13:33:09Z |
| format | Article |
| id | doaj.art-b983af7b6c134046a96665e053903a04 |
| institution | Directory Open Access Journal |
| issn | 1680-7316 1680-7324 |
| language | English |
| last_indexed | 2024-12-23T13:33:09Z |
| publishDate | 2004-01-01 |
| publisher | Copernicus Publications |
| record_format | Article |
| series | Atmospheric Chemistry and Physics |
| spelling | doaj.art-b983af7b6c134046a96665e053903a042022-12-21T17:45:06ZengCopernicus PublicationsAtmospheric Chemistry and Physics1680-73161680-73242004-01-014720152023Atmospheric particle formation events at Värriö measurement station in Finnish Lapland 1998-2002H. VehkamäkiM. Dal MasoT. HusseinR. FlanaganR. FlanaganA. HyvärinenJ. LaurosP. MerikantoM. MönkkönenK. PihlatieK. SalminenL. SogachevaT. ThumT. M. RuuskanenP. KeronenP. P. AaltoP. HariK. E. J. LehtinenÜ RannikM. KulmalaDuring the calendar years 1998-2002, 147 clear 8nm diameter particle formation events have been identified at the SMEAR I station in Värriö, northern Finland. The events have been classified in detail according to the particle formation rate, growth rate, event starting time, different trace gas concentrations and pre-existing particle concentrations as well as various meteorological conditions. The frequency of particle formation and growth events was highest during the spring months between March and May, suggesting that increasing biological activity might produce the precursor gases for particle formation. The apparent 8nm particle formation rates were around 0.1 /cm<sup>3</sup>s, and they were uncorrelated with growth rates that varied between 0.5 and 10nm/h. The air masses with clearly elevated sulphur dioxide concentrations (above 1.6ppb) came, as expected, from the direction of the Nikel and Monschegorsk smelters. Only 15 formation events can be explained by the pollution plume from these sources.http://www.atmos-chem-phys.net/4/2015/2004/acp-4-2015-2004.pdf |
| spellingShingle | H. Vehkamäki M. Dal Maso T. Hussein R. Flanagan R. Flanagan A. Hyvärinen J. Lauros P. Merikanto M. Mönkkönen K. Pihlatie K. Salminen L. Sogacheva T. Thum T. M. Ruuskanen P. Keronen P. P. Aalto P. Hari K. E. J. Lehtinen Ü Rannik M. Kulmala Atmospheric particle formation events at Värriö measurement station in Finnish Lapland 1998-2002 Atmospheric Chemistry and Physics |
| title | Atmospheric particle formation events at Värriö measurement station in Finnish Lapland 1998-2002 |
| title_full | Atmospheric particle formation events at Värriö measurement station in Finnish Lapland 1998-2002 |
| title_fullStr | Atmospheric particle formation events at Värriö measurement station in Finnish Lapland 1998-2002 |
| title_full_unstemmed | Atmospheric particle formation events at Värriö measurement station in Finnish Lapland 1998-2002 |
| title_short | Atmospheric particle formation events at Värriö measurement station in Finnish Lapland 1998-2002 |
| title_sort | atmospheric particle formation events at varrio measurement station in finnish lapland 1998 2002 |
| url | http://www.atmos-chem-phys.net/4/2015/2004/acp-4-2015-2004.pdf |
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