under a Creative Commons License. Atmospheric Chemistry and Physics Measurements of optical properties of atmospheric aerosols in
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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ftciteseerx:oai:CiteSeerX.psu:10.1.1.405.807 2023-05-15T17:05:00+02:00 under a Creative Commons License. Atmospheric Chemistry and Physics Measurements of optical properties of atmospheric aerosols in Northern Finland V. Aaltonen H. Lihavainen V. -m. Kerminen J. Hatakka K. Eneroth M. Kulmala Y. Viisanen The Pennsylvania State University CiteSeerX Archives application/pdf http://citeseerx.ist.psu.edu/viewdoc/summary?doi=10.1.1.405.807 http://hal.archives-ouvertes.fr/docs/00/29/58/76/PDF/acp-6-1155-2006.pdf en eng http://citeseerx.ist.psu.edu/viewdoc/summary?doi=10.1.1.405.807 http://hal.archives-ouvertes.fr/docs/00/29/58/76/PDF/acp-6-1155-2006.pdf Metadata may be used without restrictions as long as the oai identifier remains attached to it. http://hal.archives-ouvertes.fr/docs/00/29/58/76/PDF/acp-6-1155-2006.pdf text ftciteseerx 2016-01-08T03:02:49Z 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 4–5 times higher summer maximum. The scattering was dominated by submicron aerosols and especially so during late summer and autumn. The ˚Angström 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 ˚Angström exponent were also observed in connection with transport from these areas. 1 Text kola peninsula Subarctic Unknown Kola Peninsula |
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ftciteseerx |
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English |
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 4–5 times higher summer maximum. The scattering was dominated by submicron aerosols and especially so during late summer and autumn. The ˚Angström 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 ˚Angström exponent were also observed in connection with transport from these areas. 1 |
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The Pennsylvania State University CiteSeerX Archives |
format |
Text |
author |
Northern Finland V. Aaltonen H. Lihavainen V. -m. Kerminen J. Hatakka K. Eneroth M. Kulmala Y. Viisanen |
spellingShingle |
Northern Finland V. Aaltonen H. Lihavainen V. -m. Kerminen J. Hatakka K. Eneroth M. Kulmala Y. Viisanen under a Creative Commons License. Atmospheric Chemistry and Physics Measurements of optical properties of atmospheric aerosols in |
author_facet |
Northern Finland V. Aaltonen H. Lihavainen V. -m. Kerminen J. Hatakka K. Eneroth M. Kulmala Y. Viisanen |
author_sort |
Northern Finland |
title |
under a Creative Commons License. Atmospheric Chemistry and Physics Measurements of optical properties of atmospheric aerosols in |
title_short |
under a Creative Commons License. Atmospheric Chemistry and Physics Measurements of optical properties of atmospheric aerosols in |
title_full |
under a Creative Commons License. Atmospheric Chemistry and Physics Measurements of optical properties of atmospheric aerosols in |
title_fullStr |
under a Creative Commons License. Atmospheric Chemistry and Physics Measurements of optical properties of atmospheric aerosols in |
title_full_unstemmed |
under a Creative Commons License. Atmospheric Chemistry and Physics Measurements of optical properties of atmospheric aerosols in |
title_sort |
under a creative commons license. atmospheric chemistry and physics measurements of optical properties of atmospheric aerosols in |
url |
http://citeseerx.ist.psu.edu/viewdoc/summary?doi=10.1.1.405.807 http://hal.archives-ouvertes.fr/docs/00/29/58/76/PDF/acp-6-1155-2006.pdf |
geographic |
Kola Peninsula |
geographic_facet |
Kola Peninsula |
genre |
kola peninsula Subarctic |
genre_facet |
kola peninsula Subarctic |
op_source |
http://hal.archives-ouvertes.fr/docs/00/29/58/76/PDF/acp-6-1155-2006.pdf |
op_relation |
http://citeseerx.ist.psu.edu/viewdoc/summary?doi=10.1.1.405.807 http://hal.archives-ouvertes.fr/docs/00/29/58/76/PDF/acp-6-1155-2006.pdf |
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Metadata may be used without restrictions as long as the oai identifier remains attached to it. |
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1766059379007684608 |