Integration of measurements and model simulations to characterize Eyjafjallajökull volcanic aerosols over south-eastern Italy
Volcanic aerosols resulting from the Eyjafjallajökull eruption were detected in south-eastern Italy from 20 to 22 April 2010, at a distance of approximately 4000 km from the volcano, and have been characterized by lidar, sun/sky photometer, and surface in-situ measurements. Volcanic particles added...
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ftdoajarticles:oai:doaj.org/article:6e541beb31664875aa6945394e874a27 2023-05-15T16:09:33+02:00 Integration of measurements and model simulations to characterize Eyjafjallajökull volcanic aerosols over south-eastern Italy M. R. Perrone F. De Tomasi A. Stohl N. I. Kristiansen 2012-10-01T00:00:00Z https://doi.org/10.5194/acp-12-10001-2012 https://doaj.org/article/6e541beb31664875aa6945394e874a27 EN eng Copernicus Publications http://www.atmos-chem-phys.net/12/10001/2012/acp-12-10001-2012.pdf https://doaj.org/toc/1680-7316 https://doaj.org/toc/1680-7324 doi:10.5194/acp-12-10001-2012 1680-7316 1680-7324 https://doaj.org/article/6e541beb31664875aa6945394e874a27 Atmospheric Chemistry and Physics, Vol 12, Iss 20, Pp 10001-10013 (2012) Physics QC1-999 Chemistry QD1-999 article 2012 ftdoajarticles https://doi.org/10.5194/acp-12-10001-2012 2022-12-30T23:55:27Z Volcanic aerosols resulting from the Eyjafjallajökull eruption were detected in south-eastern Italy from 20 to 22 April 2010, at a distance of approximately 4000 km from the volcano, and have been characterized by lidar, sun/sky photometer, and surface in-situ measurements. Volcanic particles added to the pre-existing aerosol load and measurement data allow quantifying the impact of volcanic particles on the aerosol vertical distribution, lidar ratios, the aerosol size distribution, and the ground-level particulate-matter concentrations. Lidar measurements reveal that backscatter coefficients by volcanic particles were about one order of magnitude smaller over south-eastern Italy than over Central Europe. Mean lidar ratios at 355 nm were equal to 64 ± 5 sr inside the volcanic aerosol layer and were characterized by smaller values (47 ± 2 sr) in the underlying layer on 20 April, 19:30 UTC. Lidar ratios and their dependence with the height reduced in the following days, mainly because of the variability of the volcanic particle contributions. Size distributions from sun/sky photometer measurements reveal the presence of volcanic particles with radii r > 0.5 μm on 21 April and that the contribution of coarse volcanic particles increased from 20 to 22 April. The aerosol fine mode fraction from sun/sky photometer measurements varied between values of 0.85 and 0.94 on 20 April and decreased to values between 0.25 and 0.82 on 22 April. Surface measurements of particle size distributions were in good accordance with column averaged particle size distributions from sun/sky photometer measurements. PM 1 /PM 2.5 mass concentration ratios of 0.69, 0.66, and 0.60 on 20, 21, and 22 April, respectively, support the increase of super-micron particles at ground. Measurements from the Regional Air Quality Agency show that PM 10 mass concentrations on 20, 21, and 22 April 2010 were enhanced in the entire Apulia Region. More specifically, PM 10 mass concentrations have on average increased over Apulia Region 22%, 50%, and 28% on ... Article in Journal/Newspaper Eyjafjallajökull Directory of Open Access Journals: DOAJ Articles Atmospheric Chemistry and Physics 12 20 10001 10013 |
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topic |
Physics QC1-999 Chemistry QD1-999 |
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Physics QC1-999 Chemistry QD1-999 M. R. Perrone F. De Tomasi A. Stohl N. I. Kristiansen Integration of measurements and model simulations to characterize Eyjafjallajökull volcanic aerosols over south-eastern Italy |
topic_facet |
Physics QC1-999 Chemistry QD1-999 |
description |
Volcanic aerosols resulting from the Eyjafjallajökull eruption were detected in south-eastern Italy from 20 to 22 April 2010, at a distance of approximately 4000 km from the volcano, and have been characterized by lidar, sun/sky photometer, and surface in-situ measurements. Volcanic particles added to the pre-existing aerosol load and measurement data allow quantifying the impact of volcanic particles on the aerosol vertical distribution, lidar ratios, the aerosol size distribution, and the ground-level particulate-matter concentrations. Lidar measurements reveal that backscatter coefficients by volcanic particles were about one order of magnitude smaller over south-eastern Italy than over Central Europe. Mean lidar ratios at 355 nm were equal to 64 ± 5 sr inside the volcanic aerosol layer and were characterized by smaller values (47 ± 2 sr) in the underlying layer on 20 April, 19:30 UTC. Lidar ratios and their dependence with the height reduced in the following days, mainly because of the variability of the volcanic particle contributions. Size distributions from sun/sky photometer measurements reveal the presence of volcanic particles with radii r > 0.5 μm on 21 April and that the contribution of coarse volcanic particles increased from 20 to 22 April. The aerosol fine mode fraction from sun/sky photometer measurements varied between values of 0.85 and 0.94 on 20 April and decreased to values between 0.25 and 0.82 on 22 April. Surface measurements of particle size distributions were in good accordance with column averaged particle size distributions from sun/sky photometer measurements. PM 1 /PM 2.5 mass concentration ratios of 0.69, 0.66, and 0.60 on 20, 21, and 22 April, respectively, support the increase of super-micron particles at ground. Measurements from the Regional Air Quality Agency show that PM 10 mass concentrations on 20, 21, and 22 April 2010 were enhanced in the entire Apulia Region. More specifically, PM 10 mass concentrations have on average increased over Apulia Region 22%, 50%, and 28% on ... |
format |
Article in Journal/Newspaper |
author |
M. R. Perrone F. De Tomasi A. Stohl N. I. Kristiansen |
author_facet |
M. R. Perrone F. De Tomasi A. Stohl N. I. Kristiansen |
author_sort |
M. R. Perrone |
title |
Integration of measurements and model simulations to characterize Eyjafjallajökull volcanic aerosols over south-eastern Italy |
title_short |
Integration of measurements and model simulations to characterize Eyjafjallajökull volcanic aerosols over south-eastern Italy |
title_full |
Integration of measurements and model simulations to characterize Eyjafjallajökull volcanic aerosols over south-eastern Italy |
title_fullStr |
Integration of measurements and model simulations to characterize Eyjafjallajökull volcanic aerosols over south-eastern Italy |
title_full_unstemmed |
Integration of measurements and model simulations to characterize Eyjafjallajökull volcanic aerosols over south-eastern Italy |
title_sort |
integration of measurements and model simulations to characterize eyjafjallajökull volcanic aerosols over south-eastern italy |
publisher |
Copernicus Publications |
publishDate |
2012 |
url |
https://doi.org/10.5194/acp-12-10001-2012 https://doaj.org/article/6e541beb31664875aa6945394e874a27 |
genre |
Eyjafjallajökull |
genre_facet |
Eyjafjallajökull |
op_source |
Atmospheric Chemistry and Physics, Vol 12, Iss 20, Pp 10001-10013 (2012) |
op_relation |
http://www.atmos-chem-phys.net/12/10001/2012/acp-12-10001-2012.pdf https://doaj.org/toc/1680-7316 https://doaj.org/toc/1680-7324 doi:10.5194/acp-12-10001-2012 1680-7316 1680-7324 https://doaj.org/article/6e541beb31664875aa6945394e874a27 |
op_doi |
https://doi.org/10.5194/acp-12-10001-2012 |
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Atmospheric Chemistry and Physics |
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12 |
container_issue |
20 |
container_start_page |
10001 |
op_container_end_page |
10013 |
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1766405419808325632 |