Monitoring of the Eyjafjallajökull volcanic aerosol plume over the Iberian Peninsula by means of four EARLINET lidar stations
Lidar and sun-photometer measurements were performed intensively over the Iberian Peninsula (IP) during the eruption of the Eyjafjallajökull volcano (Iceland) in April–May 2010. The volcanic plume reached all the IP stations for the first time on 5 May 2010. A thorough study of the event was conduct...
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ftdoajarticles:oai:doaj.org/article:faab99957c23497e95fa5a44ffb8365c 2023-05-15T16:09:31+02:00 Monitoring of the Eyjafjallajökull volcanic aerosol plume over the Iberian Peninsula by means of four EARLINET lidar stations M. Sicard J. L. Guerrero-Rascado F. Navas-Guzmán J. Preißler F. Molero S. Tomás J. A. Bravo-Aranda A. Comerón F. Rocadenbosch F. Wagner M. Pujadas L. Alados-Arboledas 2012-03-01T00:00:00Z https://doi.org/10.5194/acp-12-3115-2012 https://doaj.org/article/faab99957c23497e95fa5a44ffb8365c EN eng Copernicus Publications http://www.atmos-chem-phys.net/12/3115/2012/acp-12-3115-2012.pdf https://doaj.org/toc/1680-7316 https://doaj.org/toc/1680-7324 doi:10.5194/acp-12-3115-2012 1680-7316 1680-7324 https://doaj.org/article/faab99957c23497e95fa5a44ffb8365c Atmospheric Chemistry and Physics, Vol 12, Iss 6, Pp 3115-3130 (2012) Physics QC1-999 Chemistry QD1-999 article 2012 ftdoajarticles https://doi.org/10.5194/acp-12-3115-2012 2022-12-31T12:37:44Z Lidar and sun-photometer measurements were performed intensively over the Iberian Peninsula (IP) during the eruption of the Eyjafjallajökull volcano (Iceland) in April–May 2010. The volcanic plume reached all the IP stations for the first time on 5 May 2010. A thorough study of the event was conducted for the period 5–8 May. Firstly, the spatial and temporal evolution of the plume was described by means of lidar and sun-photometer measurements supported with backtrajectories. The volcanic aerosol layers observed over the IP were rather thin (<1000 m) with a top height up to 11–12 km. However, in some cases at the beginning of the period the thickness of those layers reached several kilometers in Évora and Madrid. The optical thicknesses associated to those layers were rather low (between 0.013 and 0.020 in average over the whole period), with peak values near 0.10 detected on 7 May. Secondly, the volcanic aerosols were characterized in terms of extinction and backscatter coefficients, lidar ratios, Ångström exponents and linear particle depolarization ratio. Lidar ratios at different sites varied between 30 and 50 sr without a marked spectral dependency. Similar extinction-related Ångström exponents varying between 0.6 and 0.8 were observed at different sites. The temporal evolution of the backscatter-related Ångström exponents points out a possible decrease of the volcanic particle size as the plume moved from west to east. Particle depolarization ratios on the order of 0.06–0.08 confirmed the coexistence of both ash and non-ash particles. Additionally, profiles of mass concentration were obtained with a method using the opposite depolarizing effects of ash particles (strongly depolarizing), non-ash particles (very weakly depolarizing), and sun-photometer observations. In Granada the ash mass concentration was found to be approximately 1.5 times higher than that of non-ash particles, and probably did not exceed the value of 200 μg m −3 during the whole event. Article in Journal/Newspaper Eyjafjallajökull Iceland Directory of Open Access Journals: DOAJ Articles Atmospheric Chemistry and Physics 12 6 3115 3130 |
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Open Polar |
collection |
Directory of Open Access Journals: DOAJ Articles |
op_collection_id |
ftdoajarticles |
language |
English |
topic |
Physics QC1-999 Chemistry QD1-999 |
spellingShingle |
Physics QC1-999 Chemistry QD1-999 M. Sicard J. L. Guerrero-Rascado F. Navas-Guzmán J. Preißler F. Molero S. Tomás J. A. Bravo-Aranda A. Comerón F. Rocadenbosch F. Wagner M. Pujadas L. Alados-Arboledas Monitoring of the Eyjafjallajökull volcanic aerosol plume over the Iberian Peninsula by means of four EARLINET lidar stations |
topic_facet |
Physics QC1-999 Chemistry QD1-999 |
description |
Lidar and sun-photometer measurements were performed intensively over the Iberian Peninsula (IP) during the eruption of the Eyjafjallajökull volcano (Iceland) in April–May 2010. The volcanic plume reached all the IP stations for the first time on 5 May 2010. A thorough study of the event was conducted for the period 5–8 May. Firstly, the spatial and temporal evolution of the plume was described by means of lidar and sun-photometer measurements supported with backtrajectories. The volcanic aerosol layers observed over the IP were rather thin (<1000 m) with a top height up to 11–12 km. However, in some cases at the beginning of the period the thickness of those layers reached several kilometers in Évora and Madrid. The optical thicknesses associated to those layers were rather low (between 0.013 and 0.020 in average over the whole period), with peak values near 0.10 detected on 7 May. Secondly, the volcanic aerosols were characterized in terms of extinction and backscatter coefficients, lidar ratios, Ångström exponents and linear particle depolarization ratio. Lidar ratios at different sites varied between 30 and 50 sr without a marked spectral dependency. Similar extinction-related Ångström exponents varying between 0.6 and 0.8 were observed at different sites. The temporal evolution of the backscatter-related Ångström exponents points out a possible decrease of the volcanic particle size as the plume moved from west to east. Particle depolarization ratios on the order of 0.06–0.08 confirmed the coexistence of both ash and non-ash particles. Additionally, profiles of mass concentration were obtained with a method using the opposite depolarizing effects of ash particles (strongly depolarizing), non-ash particles (very weakly depolarizing), and sun-photometer observations. In Granada the ash mass concentration was found to be approximately 1.5 times higher than that of non-ash particles, and probably did not exceed the value of 200 μg m −3 during the whole event. |
format |
Article in Journal/Newspaper |
author |
M. Sicard J. L. Guerrero-Rascado F. Navas-Guzmán J. Preißler F. Molero S. Tomás J. A. Bravo-Aranda A. Comerón F. Rocadenbosch F. Wagner M. Pujadas L. Alados-Arboledas |
author_facet |
M. Sicard J. L. Guerrero-Rascado F. Navas-Guzmán J. Preißler F. Molero S. Tomás J. A. Bravo-Aranda A. Comerón F. Rocadenbosch F. Wagner M. Pujadas L. Alados-Arboledas |
author_sort |
M. Sicard |
title |
Monitoring of the Eyjafjallajökull volcanic aerosol plume over the Iberian Peninsula by means of four EARLINET lidar stations |
title_short |
Monitoring of the Eyjafjallajökull volcanic aerosol plume over the Iberian Peninsula by means of four EARLINET lidar stations |
title_full |
Monitoring of the Eyjafjallajökull volcanic aerosol plume over the Iberian Peninsula by means of four EARLINET lidar stations |
title_fullStr |
Monitoring of the Eyjafjallajökull volcanic aerosol plume over the Iberian Peninsula by means of four EARLINET lidar stations |
title_full_unstemmed |
Monitoring of the Eyjafjallajökull volcanic aerosol plume over the Iberian Peninsula by means of four EARLINET lidar stations |
title_sort |
monitoring of the eyjafjallajökull volcanic aerosol plume over the iberian peninsula by means of four earlinet lidar stations |
publisher |
Copernicus Publications |
publishDate |
2012 |
url |
https://doi.org/10.5194/acp-12-3115-2012 https://doaj.org/article/faab99957c23497e95fa5a44ffb8365c |
genre |
Eyjafjallajökull Iceland |
genre_facet |
Eyjafjallajökull Iceland |
op_source |
Atmospheric Chemistry and Physics, Vol 12, Iss 6, Pp 3115-3130 (2012) |
op_relation |
http://www.atmos-chem-phys.net/12/3115/2012/acp-12-3115-2012.pdf https://doaj.org/toc/1680-7316 https://doaj.org/toc/1680-7324 doi:10.5194/acp-12-3115-2012 1680-7316 1680-7324 https://doaj.org/article/faab99957c23497e95fa5a44ffb8365c |
op_doi |
https://doi.org/10.5194/acp-12-3115-2012 |
container_title |
Atmospheric Chemistry and Physics |
container_volume |
12 |
container_issue |
6 |
container_start_page |
3115 |
op_container_end_page |
3130 |
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1766405393024548864 |