A European aerosol phenomenology – 6: scattering properties of atmospheric aerosol particles from 28 ACTRIS sites
This paper presents the light-scattering properties of atmospheric aerosol particles measured over the past decade at 28 ACTRIS observatories, which are located mainly in Europe. The data include particle light scattering (sp) and hemispheric backscattering (bsp) coefficients, scattering Ångström ex...
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2018
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Online Access: | https://dx.doi.org/10.5281/zenodo.2644919 https://zenodo.org/record/2644919 |
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This paper presents the light-scattering properties of atmospheric aerosol particles measured over the past decade at 28 ACTRIS observatories, which are located mainly in Europe. The data include particle light scattering (sp) and hemispheric backscattering (bsp) coefficients, scattering Ångström exponent (SAE), backscatter fraction (BF) and asymmetry parameter (g). An increasing gradient of sp is observed when moving from remote environments (arctic/mountain) to regional and to urban environments. At a regional level in Europe, sp also increases when moving from Nordic and Baltic countries and from western Europe to central/eastern Europe, whereas no clear spatial gradient is observed for other station environments. The SAE does not show a clear gradient as a function of the placement of the station. However, a west-to-east-increasing gradient is observed for both regional and mountain placements, suggesting a lower fraction of fine-mode particle in western/south-western Europe compared to central and eastern Europe, where the fine-mode particles dominate the scattering. The g does not show any clear gradient by station placement or geographical location reflecting the complex relationship of this parameter with the physical properties of the aerosol particles. Both the station placement and the geographical location are important factors affecting the intraannual variability. At mountain sites, higher sp and SAE values are measured in the summer due to the enhanced boundary layer influence and/or new particle-formation episodes. Conversely, the lower horizontal and vertical dispersion during winter leads to higher sp values at all low-altitude sites in central and eastern Europe compared to summer. These sites also show SAE maxima in the summer (with corresponding g minima). At all sites, both SAE and g show a strong variation with aerosol particle loading. The lowest values of g are always observed together with low sp values, indicating a larger contribution from particles in the smaller accumulation mode. During periods of high sp values, the variation of g is less pronounced, whereas the SAE increases or decreases, suggesting changes mostly in the coarse aerosol particle mode rather than in the fine mode. Statistically significant decreasing trends of sp are observed at 5 out of the 13 stations included in the trend analyses. The total reductions of sp are consistent with those reported for PM2:5 and PM10 mass concentrations over similar periods across Europe. |
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Pandolfi, Marco Alados-Arboledas, Lucas Alastuey, Andrés Andrade, Marcos Christo Angelov Artiñano, Begoña Backman, John Baltensperger, Urs Bonasoni, Paolo Bukowiecki, Nicolas Coen, Martine Collaud Conil, Sébastien Coz, Esther Crenn, Vincent Dudoitis, Vadimas Ealo, Marina Eleftheriadis, Kostas Favez, Olivier Prodromos Fetfatzis Fiebig, Markus Flentje, Harald Ginot, Patrick Gysel, Martin Henzing, Bas Andras Hoffer Smejkalova, Adela Holubova Kalapov, Ivo Kalivitis, Nikos Giorgos Kouvarakis Kristensson, Adam Kulmala, Markku Lihavainen, Heikki Lunder, Chris Luoma, Krista Lyamani, Hassan Marinoni, Angela Mihalopoulos, Nikos Moerman, Marcel Nicolas, José O'Dowd, Colin Petäjä, Tuukka Jean-Eudes Petit Pichon, Jean Marc Prokopciuk, Nina Jean-Philippe Putaud Rodríguez, Sergio Sciare, Jean Sellegri, Karine Swietlicki, Erik Titos, Gloria Tuch, Thomas Tunved, Peter Ulevicius, Vidmantas Vaishya, Aditya Vana, Milan Virkkula, Aki Vratolis, Stergios Weingartner, Ernest Wiedensohler, Alfred Laj, Paolo |
spellingShingle |
Pandolfi, Marco Alados-Arboledas, Lucas Alastuey, Andrés Andrade, Marcos Christo Angelov Artiñano, Begoña Backman, John Baltensperger, Urs Bonasoni, Paolo Bukowiecki, Nicolas Coen, Martine Collaud Conil, Sébastien Coz, Esther Crenn, Vincent Dudoitis, Vadimas Ealo, Marina Eleftheriadis, Kostas Favez, Olivier Prodromos Fetfatzis Fiebig, Markus Flentje, Harald Ginot, Patrick Gysel, Martin Henzing, Bas Andras Hoffer Smejkalova, Adela Holubova Kalapov, Ivo Kalivitis, Nikos Giorgos Kouvarakis Kristensson, Adam Kulmala, Markku Lihavainen, Heikki Lunder, Chris Luoma, Krista Lyamani, Hassan Marinoni, Angela Mihalopoulos, Nikos Moerman, Marcel Nicolas, José O'Dowd, Colin Petäjä, Tuukka Jean-Eudes Petit Pichon, Jean Marc Prokopciuk, Nina Jean-Philippe Putaud Rodríguez, Sergio Sciare, Jean Sellegri, Karine Swietlicki, Erik Titos, Gloria Tuch, Thomas Tunved, Peter Ulevicius, Vidmantas Vaishya, Aditya Vana, Milan Virkkula, Aki Vratolis, Stergios Weingartner, Ernest Wiedensohler, Alfred Laj, Paolo A European aerosol phenomenology – 6: scattering properties of atmospheric aerosol particles from 28 ACTRIS sites |
author_facet |
Pandolfi, Marco Alados-Arboledas, Lucas Alastuey, Andrés Andrade, Marcos Christo Angelov Artiñano, Begoña Backman, John Baltensperger, Urs Bonasoni, Paolo Bukowiecki, Nicolas Coen, Martine Collaud Conil, Sébastien Coz, Esther Crenn, Vincent Dudoitis, Vadimas Ealo, Marina Eleftheriadis, Kostas Favez, Olivier Prodromos Fetfatzis Fiebig, Markus Flentje, Harald Ginot, Patrick Gysel, Martin Henzing, Bas Andras Hoffer Smejkalova, Adela Holubova Kalapov, Ivo Kalivitis, Nikos Giorgos Kouvarakis Kristensson, Adam Kulmala, Markku Lihavainen, Heikki Lunder, Chris Luoma, Krista Lyamani, Hassan Marinoni, Angela Mihalopoulos, Nikos Moerman, Marcel Nicolas, José O'Dowd, Colin Petäjä, Tuukka Jean-Eudes Petit Pichon, Jean Marc Prokopciuk, Nina Jean-Philippe Putaud Rodríguez, Sergio Sciare, Jean Sellegri, Karine Swietlicki, Erik Titos, Gloria Tuch, Thomas Tunved, Peter Ulevicius, Vidmantas Vaishya, Aditya Vana, Milan Virkkula, Aki Vratolis, Stergios Weingartner, Ernest Wiedensohler, Alfred Laj, Paolo |
author_sort |
Pandolfi, Marco |
title |
A European aerosol phenomenology – 6: scattering properties of atmospheric aerosol particles from 28 ACTRIS sites |
title_short |
A European aerosol phenomenology – 6: scattering properties of atmospheric aerosol particles from 28 ACTRIS sites |
title_full |
A European aerosol phenomenology – 6: scattering properties of atmospheric aerosol particles from 28 ACTRIS sites |
title_fullStr |
A European aerosol phenomenology – 6: scattering properties of atmospheric aerosol particles from 28 ACTRIS sites |
title_full_unstemmed |
A European aerosol phenomenology – 6: scattering properties of atmospheric aerosol particles from 28 ACTRIS sites |
title_sort |
european aerosol phenomenology – 6: scattering properties of atmospheric aerosol particles from 28 actris sites |
publisher |
Zenodo |
publishDate |
2018 |
url |
https://dx.doi.org/10.5281/zenodo.2644919 https://zenodo.org/record/2644919 |
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Arctic |
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Arctic |
genre |
Arctic |
genre_facet |
Arctic |
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https://dx.doi.org/10.5281/zenodo.2644918 |
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Open Access Creative Commons Attribution 4.0 International https://creativecommons.org/licenses/by/4.0/legalcode cc-by-4.0 info:eu-repo/semantics/openAccess |
op_rightsnorm |
CC-BY |
op_doi |
https://doi.org/10.5281/zenodo.2644919 https://doi.org/10.5281/zenodo.2644918 |
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1766348961529987072 |
spelling |
ftdatacite:10.5281/zenodo.2644919 2023-05-15T15:18:47+02:00 A European aerosol phenomenology – 6: scattering properties of atmospheric aerosol particles from 28 ACTRIS sites Pandolfi, Marco Alados-Arboledas, Lucas Alastuey, Andrés Andrade, Marcos Christo Angelov Artiñano, Begoña Backman, John Baltensperger, Urs Bonasoni, Paolo Bukowiecki, Nicolas Coen, Martine Collaud Conil, Sébastien Coz, Esther Crenn, Vincent Dudoitis, Vadimas Ealo, Marina Eleftheriadis, Kostas Favez, Olivier Prodromos Fetfatzis Fiebig, Markus Flentje, Harald Ginot, Patrick Gysel, Martin Henzing, Bas Andras Hoffer Smejkalova, Adela Holubova Kalapov, Ivo Kalivitis, Nikos Giorgos Kouvarakis Kristensson, Adam Kulmala, Markku Lihavainen, Heikki Lunder, Chris Luoma, Krista Lyamani, Hassan Marinoni, Angela Mihalopoulos, Nikos Moerman, Marcel Nicolas, José O'Dowd, Colin Petäjä, Tuukka Jean-Eudes Petit Pichon, Jean Marc Prokopciuk, Nina Jean-Philippe Putaud Rodríguez, Sergio Sciare, Jean Sellegri, Karine Swietlicki, Erik Titos, Gloria Tuch, Thomas Tunved, Peter Ulevicius, Vidmantas Vaishya, Aditya Vana, Milan Virkkula, Aki Vratolis, Stergios Weingartner, Ernest Wiedensohler, Alfred Laj, Paolo 2018 https://dx.doi.org/10.5281/zenodo.2644919 https://zenodo.org/record/2644919 unknown Zenodo https://dx.doi.org/10.5281/zenodo.2644918 Open Access Creative Commons Attribution 4.0 International https://creativecommons.org/licenses/by/4.0/legalcode cc-by-4.0 info:eu-repo/semantics/openAccess CC-BY Text Journal article article-journal ScholarlyArticle 2018 ftdatacite https://doi.org/10.5281/zenodo.2644919 https://doi.org/10.5281/zenodo.2644918 2021-11-05T12:55:41Z This paper presents the light-scattering properties of atmospheric aerosol particles measured over the past decade at 28 ACTRIS observatories, which are located mainly in Europe. The data include particle light scattering (sp) and hemispheric backscattering (bsp) coefficients, scattering Ångström exponent (SAE), backscatter fraction (BF) and asymmetry parameter (g). An increasing gradient of sp is observed when moving from remote environments (arctic/mountain) to regional and to urban environments. At a regional level in Europe, sp also increases when moving from Nordic and Baltic countries and from western Europe to central/eastern Europe, whereas no clear spatial gradient is observed for other station environments. The SAE does not show a clear gradient as a function of the placement of the station. However, a west-to-east-increasing gradient is observed for both regional and mountain placements, suggesting a lower fraction of fine-mode particle in western/south-western Europe compared to central and eastern Europe, where the fine-mode particles dominate the scattering. The g does not show any clear gradient by station placement or geographical location reflecting the complex relationship of this parameter with the physical properties of the aerosol particles. Both the station placement and the geographical location are important factors affecting the intraannual variability. At mountain sites, higher sp and SAE values are measured in the summer due to the enhanced boundary layer influence and/or new particle-formation episodes. Conversely, the lower horizontal and vertical dispersion during winter leads to higher sp values at all low-altitude sites in central and eastern Europe compared to summer. These sites also show SAE maxima in the summer (with corresponding g minima). At all sites, both SAE and g show a strong variation with aerosol particle loading. The lowest values of g are always observed together with low sp values, indicating a larger contribution from particles in the smaller accumulation mode. During periods of high sp values, the variation of g is less pronounced, whereas the SAE increases or decreases, suggesting changes mostly in the coarse aerosol particle mode rather than in the fine mode. Statistically significant decreasing trends of sp are observed at 5 out of the 13 stations included in the trend analyses. The total reductions of sp are consistent with those reported for PM2:5 and PM10 mass concentrations over similar periods across Europe. Text Arctic DataCite Metadata Store (German National Library of Science and Technology) Arctic |