Optical Properties and Vertical Extension of Aged Ash Layers Over the Eastern Mediterranean as Observed by Raman Lidars During the Eyjafjallajökull Eruption in May 2010
The vertical extension and the optical properties of aged ash layers advected from the Eyjafjallajökull volcanic eruption over the Eastern Mediterranean (Greece and Turkey) are presented for the period May 10-21, 2010. Raman lidar observations performed at three stations of EARLINET (Athens, Thessal...
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Online Access: | https://doi.org/10.1016/j.atmosenv.2011.08.037 |
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ftcyprusunivt:oai:ktisis.cut.ac.cy:10488/7751 2023-05-15T16:09:30+02:00 Optical Properties and Vertical Extension of Aged Ash Layers Over the Eastern Mediterranean as Observed by Raman Lidars During the Eyjafjallajökull Eruption in May 2010 Papayannis, Alexandros D. Amiridis, Vassilis Mamouri, Rodanthi-Elisavet 2012-03 pdf https://doi.org/10.1016/j.atmosenv.2011.08.037 en eng Atmospheric Environment, 2012, vol. 48, pp. 56-65 1352-2310 doi:10.1016/j.atmosenv.2011.08.037 56 65 none Computer simulation Geometry Optical radar Remote sensing Earth and Related Environmental Sciences Natural Sciences article 2012 ftcyprusunivt https://doi.org/10.1016/j.atmosenv.2011.08.037 2022-10-20T16:37:10Z The vertical extension and the optical properties of aged ash layers advected from the Eyjafjallajökull volcanic eruption over the Eastern Mediterranean (Greece and Turkey) are presented for the period May 10-21, 2010. Raman lidar observations performed at three stations of EARLINET (Athens, Thessaloniki and Istanbul), provided clear ash signatures within certain layers, although ash was sometimes mixed with mineral dust advected from the Saharan region. AERONET columnar measurements did not indicate the presence of ash over the area for that period, although they did for the dust particles. This was further investigated and confirmed by simulations of the ash trajectories by the FLEXPART model and the BSC-DREAM8b dust model. Good agreement was found between simulated and observed geometrical characteristics of the ash and dust layers, respectively. Ash particles were observed over the lidar stations after 6-7-days transport from the volcanic source at height ranges between approximately 1.5 and 6km. Mean ash particle layer thickness ranged between 1.5 and 2.5km and the corresponding aerosol optical depth (AOD) was of the order of 0.12-0.06 at 355nm and of 0.04-0.05 at 532nm. Inside the ash layers, the lidar ratios (LR) ranged between 55 and 67sr at 355nm and 76-89sr at 532nm, while the particle linear depolarization ratio ranged between 10 and 25%. Article in Journal/Newspaper Eyjafjallajökull Cyprus University of Technology: Ktisis Institutional Repository Atmospheric Environment 48 56 65 |
institution |
Open Polar |
collection |
Cyprus University of Technology: Ktisis Institutional Repository |
op_collection_id |
ftcyprusunivt |
language |
English |
topic |
Computer simulation Geometry Optical radar Remote sensing Earth and Related Environmental Sciences Natural Sciences |
spellingShingle |
Computer simulation Geometry Optical radar Remote sensing Earth and Related Environmental Sciences Natural Sciences Papayannis, Alexandros D. Amiridis, Vassilis Mamouri, Rodanthi-Elisavet Optical Properties and Vertical Extension of Aged Ash Layers Over the Eastern Mediterranean as Observed by Raman Lidars During the Eyjafjallajökull Eruption in May 2010 |
topic_facet |
Computer simulation Geometry Optical radar Remote sensing Earth and Related Environmental Sciences Natural Sciences |
description |
The vertical extension and the optical properties of aged ash layers advected from the Eyjafjallajökull volcanic eruption over the Eastern Mediterranean (Greece and Turkey) are presented for the period May 10-21, 2010. Raman lidar observations performed at three stations of EARLINET (Athens, Thessaloniki and Istanbul), provided clear ash signatures within certain layers, although ash was sometimes mixed with mineral dust advected from the Saharan region. AERONET columnar measurements did not indicate the presence of ash over the area for that period, although they did for the dust particles. This was further investigated and confirmed by simulations of the ash trajectories by the FLEXPART model and the BSC-DREAM8b dust model. Good agreement was found between simulated and observed geometrical characteristics of the ash and dust layers, respectively. Ash particles were observed over the lidar stations after 6-7-days transport from the volcanic source at height ranges between approximately 1.5 and 6km. Mean ash particle layer thickness ranged between 1.5 and 2.5km and the corresponding aerosol optical depth (AOD) was of the order of 0.12-0.06 at 355nm and of 0.04-0.05 at 532nm. Inside the ash layers, the lidar ratios (LR) ranged between 55 and 67sr at 355nm and 76-89sr at 532nm, while the particle linear depolarization ratio ranged between 10 and 25%. |
format |
Article in Journal/Newspaper |
author |
Papayannis, Alexandros D. Amiridis, Vassilis Mamouri, Rodanthi-Elisavet |
author_facet |
Papayannis, Alexandros D. Amiridis, Vassilis Mamouri, Rodanthi-Elisavet |
author_sort |
Papayannis, Alexandros D. |
title |
Optical Properties and Vertical Extension of Aged Ash Layers Over the Eastern Mediterranean as Observed by Raman Lidars During the Eyjafjallajökull Eruption in May 2010 |
title_short |
Optical Properties and Vertical Extension of Aged Ash Layers Over the Eastern Mediterranean as Observed by Raman Lidars During the Eyjafjallajökull Eruption in May 2010 |
title_full |
Optical Properties and Vertical Extension of Aged Ash Layers Over the Eastern Mediterranean as Observed by Raman Lidars During the Eyjafjallajökull Eruption in May 2010 |
title_fullStr |
Optical Properties and Vertical Extension of Aged Ash Layers Over the Eastern Mediterranean as Observed by Raman Lidars During the Eyjafjallajökull Eruption in May 2010 |
title_full_unstemmed |
Optical Properties and Vertical Extension of Aged Ash Layers Over the Eastern Mediterranean as Observed by Raman Lidars During the Eyjafjallajökull Eruption in May 2010 |
title_sort |
optical properties and vertical extension of aged ash layers over the eastern mediterranean as observed by raman lidars during the eyjafjallajökull eruption in may 2010 |
publishDate |
2012 |
url |
https://doi.org/10.1016/j.atmosenv.2011.08.037 |
genre |
Eyjafjallajökull |
genre_facet |
Eyjafjallajökull |
op_relation |
Atmospheric Environment, 2012, vol. 48, pp. 56-65 1352-2310 doi:10.1016/j.atmosenv.2011.08.037 56 65 |
op_rights |
none |
op_doi |
https://doi.org/10.1016/j.atmosenv.2011.08.037 |
container_title |
Atmospheric Environment |
container_volume |
48 |
container_start_page |
56 |
op_container_end_page |
65 |
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1766405374972264448 |