Measurements of optical properties of atmospheric aerosols in Northern Finland
International audience 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 a...
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ftccsdartic:oai:HAL:hal-00295876v1 2023-12-03T10:25:27+01:00 Measurements of optical properties of atmospheric aerosols in Northern Finland Aaltonen, V. Lihavainen, H. Kerminen, V.-M. Komppula, M. Hatakka, J. Eneroth, K. Kulmala, M. Viisanen, Y. Finnish Meteorological Institute (FMI) Department of Applied Environmental Science Stockholm (ITM) Stockholm University Department of Physical Sciences Helsinki Helsingin yliopisto = Helsingfors universitet = University of Helsinki 2006-04-11 https://hal.science/hal-00295876 https://hal.science/hal-00295876/document https://hal.science/hal-00295876/file/acp-6-1155-2006.pdf en eng HAL CCSD European Geosciences Union hal-00295876 https://hal.science/hal-00295876 https://hal.science/hal-00295876/document https://hal.science/hal-00295876/file/acp-6-1155-2006.pdf info:eu-repo/semantics/OpenAccess ISSN: 1680-7316 EISSN: 1680-7324 Atmospheric Chemistry and Physics https://hal.science/hal-00295876 Atmospheric Chemistry and Physics, 2006, 6 (5), pp.1155-1164 [SDU.OCEAN]Sciences of the Universe [physics]/Ocean Atmosphere info:eu-repo/semantics/article Journal articles 2006 ftccsdartic 2023-11-04T23:56:00Z International audience 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 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 Archive ouverte HAL (Hyper Article en Ligne, CCSD - Centre pour la Communication Scientifique Directe) Kola Peninsula |
institution |
Open Polar |
collection |
Archive ouverte HAL (Hyper Article en Ligne, CCSD - Centre pour la Communication Scientifique Directe) |
op_collection_id |
ftccsdartic |
language |
English |
topic |
[SDU.OCEAN]Sciences of the Universe [physics]/Ocean Atmosphere |
spellingShingle |
[SDU.OCEAN]Sciences of the Universe [physics]/Ocean Atmosphere Aaltonen, V. Lihavainen, H. Kerminen, V.-M. Komppula, M. Hatakka, J. Eneroth, K. Kulmala, M. Viisanen, Y. Measurements of optical properties of atmospheric aerosols in Northern Finland |
topic_facet |
[SDU.OCEAN]Sciences of the Universe [physics]/Ocean Atmosphere |
description |
International audience 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 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. |
author2 |
Finnish Meteorological Institute (FMI) Department of Applied Environmental Science Stockholm (ITM) Stockholm University Department of Physical Sciences Helsinki Helsingin yliopisto = Helsingfors universitet = University of Helsinki |
format |
Article in Journal/Newspaper |
author |
Aaltonen, V. Lihavainen, H. Kerminen, V.-M. Komppula, M. Hatakka, J. Eneroth, K. Kulmala, M. Viisanen, Y. |
author_facet |
Aaltonen, V. Lihavainen, H. Kerminen, V.-M. Komppula, M. Hatakka, J. Eneroth, K. Kulmala, M. Viisanen, Y. |
author_sort |
Aaltonen, V. |
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 |
HAL CCSD |
publishDate |
2006 |
url |
https://hal.science/hal-00295876 https://hal.science/hal-00295876/document https://hal.science/hal-00295876/file/acp-6-1155-2006.pdf |
geographic |
Kola Peninsula |
geographic_facet |
Kola Peninsula |
genre |
kola peninsula Northern Finland Subarctic |
genre_facet |
kola peninsula Northern Finland Subarctic |
op_source |
ISSN: 1680-7316 EISSN: 1680-7324 Atmospheric Chemistry and Physics https://hal.science/hal-00295876 Atmospheric Chemistry and Physics, 2006, 6 (5), pp.1155-1164 |
op_relation |
hal-00295876 https://hal.science/hal-00295876 https://hal.science/hal-00295876/document https://hal.science/hal-00295876/file/acp-6-1155-2006.pdf |
op_rights |
info:eu-repo/semantics/OpenAccess |
_version_ |
1784274325405171712 |