Integration of measurements and model simulations to characterize Eyjafjallajokull 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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ftnilu:oai:nilu.brage.unit.no:11250/2651003 2023-07-30T04:03:23+02:00 Integration of measurements and model simulations to characterize Eyjafjallajokull volcanic aerosols over south-eastern Italy Perrone, M. R. De Tomasi, F. Stohl, Andreas Kristiansen, Nina Iren 2012 application/pdf https://hdl.handle.net/11250/2651003 https://doi.org/10.5194/acp-12-10001-2012 eng eng Atmospheric Chemistry and Physics. 2012, 12 (20), 10001-10013. urn:issn:1680-7316 https://hdl.handle.net/11250/2651003 https://doi.org/10.5194/acp-12-10001-2012 cristin:976069 Navngivelse 4.0 Internasjonal http://creativecommons.org/licenses/by/4.0/deed.no © Author(s) 2012. 10001-10013 12 Atmospheric Chemistry and Physics 20 Peer reviewed Journal article 2012 ftnilu https://doi.org/10.5194/acp-12-10001-2012 2023-07-08T19:54:01Z 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. PM1/PM2.5 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 PM10 mass concentrations on 20, 21, and 22 April 2010 were enhanced in the entire Apulia Region. More specifically, PM10 mass concentrations have on average increased over Apulia Region 22%, 50%, and 28% on 20, ... Article in Journal/Newspaper Eyjafjallajökull NILU – Norwegian Institute for Air Research: NILU Brage Eyjafjallajokull ENVELOPE(-19.633,-19.633,63.631,63.631) Atmospheric Chemistry and Physics 12 20 10001 10013 |
institution |
Open Polar |
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NILU – Norwegian Institute for Air Research: NILU Brage |
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ftnilu |
language |
English |
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. PM1/PM2.5 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 PM10 mass concentrations on 20, 21, and 22 April 2010 were enhanced in the entire Apulia Region. More specifically, PM10 mass concentrations have on average increased over Apulia Region 22%, 50%, and 28% on 20, ... |
format |
Article in Journal/Newspaper |
author |
Perrone, M. R. De Tomasi, F. Stohl, Andreas Kristiansen, Nina Iren |
spellingShingle |
Perrone, M. R. De Tomasi, F. Stohl, Andreas Kristiansen, Nina Iren Integration of measurements and model simulations to characterize Eyjafjallajokull volcanic aerosols over south-eastern Italy |
author_facet |
Perrone, M. R. De Tomasi, F. Stohl, Andreas Kristiansen, Nina Iren |
author_sort |
Perrone, M. R. |
title |
Integration of measurements and model simulations to characterize Eyjafjallajokull volcanic aerosols over south-eastern Italy |
title_short |
Integration of measurements and model simulations to characterize Eyjafjallajokull volcanic aerosols over south-eastern Italy |
title_full |
Integration of measurements and model simulations to characterize Eyjafjallajokull volcanic aerosols over south-eastern Italy |
title_fullStr |
Integration of measurements and model simulations to characterize Eyjafjallajokull volcanic aerosols over south-eastern Italy |
title_full_unstemmed |
Integration of measurements and model simulations to characterize Eyjafjallajokull volcanic aerosols over south-eastern Italy |
title_sort |
integration of measurements and model simulations to characterize eyjafjallajokull volcanic aerosols over south-eastern italy |
publishDate |
2012 |
url |
https://hdl.handle.net/11250/2651003 https://doi.org/10.5194/acp-12-10001-2012 |
long_lat |
ENVELOPE(-19.633,-19.633,63.631,63.631) |
geographic |
Eyjafjallajokull |
geographic_facet |
Eyjafjallajokull |
genre |
Eyjafjallajökull |
genre_facet |
Eyjafjallajökull |
op_source |
10001-10013 12 Atmospheric Chemistry and Physics 20 |
op_relation |
Atmospheric Chemistry and Physics. 2012, 12 (20), 10001-10013. urn:issn:1680-7316 https://hdl.handle.net/11250/2651003 https://doi.org/10.5194/acp-12-10001-2012 cristin:976069 |
op_rights |
Navngivelse 4.0 Internasjonal http://creativecommons.org/licenses/by/4.0/deed.no © Author(s) 2012. |
op_doi |
https://doi.org/10.5194/acp-12-10001-2012 |
container_title |
Atmospheric Chemistry and Physics |
container_volume |
12 |
container_issue |
20 |
container_start_page |
10001 |
op_container_end_page |
10013 |
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