Measurements of optical properties of atmospheric aerosols in Northern Finland
Three years of continuous measurements of aerosol optical properties and simultaneous aerosol number size distribution measurements at Pallas GAW station, a remote subarctic site in the northern border of the boreal forest zone, have been analysed. The scattering coefficient at 550 nm varied from 0....
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ftdoajarticles:oai:doaj.org/article:ccf5fa85ab1e4cc3996c4f45fda4c887 2023-05-15T17:05:00+02:00 Measurements of optical properties of atmospheric aerosols in Northern Finland V. Aaltonen H. Lihavainen V.-M. Kerminen M. Komppula J. Hatakka K. Eneroth M. Kulmala Y. Viisanen 2006-01-01T00:00:00Z https://doaj.org/article/ccf5fa85ab1e4cc3996c4f45fda4c887 EN eng Copernicus Publications http://www.atmos-chem-phys.net/6/1155/2006/acp-6-1155-2006.pdf https://doaj.org/toc/1680-7316 https://doaj.org/toc/1680-7324 1680-7316 1680-7324 https://doaj.org/article/ccf5fa85ab1e4cc3996c4f45fda4c887 Atmospheric Chemistry and Physics, Vol 6, Iss 5, Pp 1155-1164 (2006) Physics QC1-999 Chemistry QD1-999 article 2006 ftdoajarticles 2022-12-31T11:48:55Z Three years of continuous measurements of aerosol optical properties and simultaneous aerosol number size distribution measurements at Pallas GAW station, a remote subarctic site in the northern border of the boreal forest zone, have been analysed. The scattering coefficient at 550 nm varied from 0.2 to 94.4 Mm −1 with an average of 7.1±8.6 Mm −1 . Both the scattering and backscattering coefficients had a clear seasonal cycle with an autumn minimum and a 4–5times higher summer maximum. The scattering was dominated by submicron aerosols and especially so during late summer and autumn. The Ångström exponent had a clear seasonal pattern with maximum values in late summer and minimum values during wintertime. The highest hemispheric backscattering fraction values were observed in autumn. To analyse the influence of air mass origin on the aerosol optical properties a trajectory climatology was applied to the Pallas aerosol data. The most polluted trajectory patterns represented air masses from the Kola Peninsula, Scandinavia and Russia as well as long-range transport from Britain and Eastern Europe. These air masses had the largest average scattering and backscattering coefficients for all seasons. Higher than average values of the Ångström exponent were also observed in connection with transport from these areas. Article in Journal/Newspaper kola peninsula Northern Finland Subarctic Directory of Open Access Journals: DOAJ Articles Kola Peninsula |
institution |
Open Polar |
collection |
Directory of Open Access Journals: DOAJ Articles |
op_collection_id |
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language |
English |
topic |
Physics QC1-999 Chemistry QD1-999 |
spellingShingle |
Physics QC1-999 Chemistry QD1-999 V. Aaltonen H. Lihavainen V.-M. Kerminen M. Komppula J. Hatakka K. Eneroth M. Kulmala Y. Viisanen Measurements of optical properties of atmospheric aerosols in Northern Finland |
topic_facet |
Physics QC1-999 Chemistry QD1-999 |
description |
Three years of continuous measurements of aerosol optical properties and simultaneous aerosol number size distribution measurements at Pallas GAW station, a remote subarctic site in the northern border of the boreal forest zone, have been analysed. The scattering coefficient at 550 nm varied from 0.2 to 94.4 Mm −1 with an average of 7.1±8.6 Mm −1 . Both the scattering and backscattering coefficients had a clear seasonal cycle with an autumn minimum and a 4–5times higher summer maximum. The scattering was dominated by submicron aerosols and especially so during late summer and autumn. The Ångström exponent had a clear seasonal pattern with maximum values in late summer and minimum values during wintertime. The highest hemispheric backscattering fraction values were observed in autumn. To analyse the influence of air mass origin on the aerosol optical properties a trajectory climatology was applied to the Pallas aerosol data. The most polluted trajectory patterns represented air masses from the Kola Peninsula, Scandinavia and Russia as well as long-range transport from Britain and Eastern Europe. These air masses had the largest average scattering and backscattering coefficients for all seasons. Higher than average values of the Ångström exponent were also observed in connection with transport from these areas. |
format |
Article in Journal/Newspaper |
author |
V. Aaltonen H. Lihavainen V.-M. Kerminen M. Komppula J. Hatakka K. Eneroth M. Kulmala Y. Viisanen |
author_facet |
V. Aaltonen H. Lihavainen V.-M. Kerminen M. Komppula J. Hatakka K. Eneroth M. Kulmala Y. Viisanen |
author_sort |
V. Aaltonen |
title |
Measurements of optical properties of atmospheric aerosols in Northern Finland |
title_short |
Measurements of optical properties of atmospheric aerosols in Northern Finland |
title_full |
Measurements of optical properties of atmospheric aerosols in Northern Finland |
title_fullStr |
Measurements of optical properties of atmospheric aerosols in Northern Finland |
title_full_unstemmed |
Measurements of optical properties of atmospheric aerosols in Northern Finland |
title_sort |
measurements of optical properties of atmospheric aerosols in northern finland |
publisher |
Copernicus Publications |
publishDate |
2006 |
url |
https://doaj.org/article/ccf5fa85ab1e4cc3996c4f45fda4c887 |
geographic |
Kola Peninsula |
geographic_facet |
Kola Peninsula |
genre |
kola peninsula Northern Finland Subarctic |
genre_facet |
kola peninsula Northern Finland Subarctic |
op_source |
Atmospheric Chemistry and Physics, Vol 6, Iss 5, Pp 1155-1164 (2006) |
op_relation |
http://www.atmos-chem-phys.net/6/1155/2006/acp-6-1155-2006.pdf https://doaj.org/toc/1680-7316 https://doaj.org/toc/1680-7324 1680-7316 1680-7324 https://doaj.org/article/ccf5fa85ab1e4cc3996c4f45fda4c887 |
_version_ |
1766059372424724480 |