French airborne lidar measurements for Eyjafjallajökull ash plume survey
International audience An UltraViolet Rayleigh-Mie lidar has been integrated aboard the French research aircraft Falcon20 in order to monitor the ash plume emitted by the Eyjafjallajökul volcano in April-May 2010. Three operational flights were carried out on 21 April, 12 and 16 May 2010 inside Fren...
Published in: | Atmospheric Chemistry and Physics |
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Main Authors: | , , , , |
Other Authors: | , , , , , , , , , , , |
Format: | Article in Journal/Newspaper |
Language: | English |
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Online Access: | https://hal.science/hal-02902895 https://hal.science/hal-02902895/document https://hal.science/hal-02902895/file/acp-12-7059-2012.pdf https://doi.org/10.5194/acp-12-7059-2012 |
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Université Toulouse III - Paul Sabatier: HAL-UPS |
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English |
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[SDU.OCEAN]Sciences of the Universe [physics]/Ocean Atmosphere [SDU.ENVI]Sciences of the Universe [physics]/Continental interfaces environment |
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[SDU.OCEAN]Sciences of the Universe [physics]/Ocean Atmosphere [SDU.ENVI]Sciences of the Universe [physics]/Continental interfaces environment Chazette, P. Dabas, A. Sanak, J. Lardier, M. Royer, P. French airborne lidar measurements for Eyjafjallajökull ash plume survey |
topic_facet |
[SDU.OCEAN]Sciences of the Universe [physics]/Ocean Atmosphere [SDU.ENVI]Sciences of the Universe [physics]/Continental interfaces environment |
description |
International audience An UltraViolet Rayleigh-Mie lidar has been integrated aboard the French research aircraft Falcon20 in order to monitor the ash plume emitted by the Eyjafjallajökul volcano in April-May 2010. Three operational flights were carried out on 21 April, 12 and 16 May 2010 inside French, Spanish and British air spaces, respectively. The original purpose of the flights was to provide the French civil aviation authorities with objective information on the presence and location of the ash plume. The present paper presents the results of detailed analyses elaborated after the volcano crisis. They bear on the structure of the ash clouds and their optical properties such as the extinction coefficient and the li-dar ratio. Lidar ratios were measured in the range of 43 to 50 sr, in good agreement with the ratios derived from ground-based lidar near Paris (France) in April 2010 (∼ 48 sr). The ash signature in terms of particulate depolarization was consistent during all flights (between 34 ± 3 % and 38 ± 3 %). Such a value seems to be a good identification parameter for volcanic ash. Using specific cross-sections between 0.19 and 1.1 m 2 g −1 , the minimum (maximal) mass concentrations in the ash plumes derived for the flights on 12 and 16 May were 140 (2300) and 250 (1500) µg m −3 , respectively. It may be rather less than, or of the order of the critical level of damage (2 mg m −3) for the aircraft engines, but well above the 200 µg m −3 warning level. |
author2 |
Laboratoire des Sciences du Climat et de l'Environnement Gif-sur-Yvette (LSCE) Université de Versailles Saint-Quentin-en-Yvelines (UVSQ)-Institut national des sciences de l'Univers (INSU - CNRS)-Université Paris-Saclay-Centre National de la Recherche Scientifique (CNRS)-Direction de Recherche Fondamentale (CEA) (DRF (CEA)) Commissariat à l'énergie atomique et aux énergies alternatives (CEA)-Commissariat à l'énergie atomique et aux énergies alternatives (CEA) Chimie Atmosphérique Expérimentale (CAE) Commissariat à l'énergie atomique et aux énergies alternatives (CEA)-Commissariat à l'énergie atomique et aux énergies alternatives (CEA)-Université de Versailles Saint-Quentin-en-Yvelines (UVSQ)-Institut national des sciences de l'Univers (INSU - CNRS)-Université Paris-Saclay-Centre National de la Recherche Scientifique (CNRS)-Direction de Recherche Fondamentale (CEA) (DRF (CEA)) Centre national de recherches météorologiques (CNRM) Institut national des sciences de l'Univers (INSU - CNRS)-Observatoire Midi-Pyrénées (OMP) Institut de Recherche pour le Développement (IRD)-Université Toulouse III - Paul Sabatier (UT3) Université de Toulouse (UT)-Université de Toulouse (UT)-Institut national des sciences de l'Univers (INSU - CNRS)-Centre National d'Études Spatiales Toulouse (CNES)-Centre National de la Recherche Scientifique (CNRS)-Météo-France-Institut de Recherche pour le Développement (IRD)-Université Toulouse III - Paul Sabatier (UT3) Université de Toulouse (UT)-Université de Toulouse (UT)-Institut national des sciences de l'Univers (INSU - CNRS)-Centre National d'Études Spatiales Toulouse (CNES)-Centre National de la Recherche Scientifique (CNRS)-Météo-France-Centre National de la Recherche Scientifique (CNRS) LEOSPHERE France LEOSPHERE |
format |
Article in Journal/Newspaper |
author |
Chazette, P. Dabas, A. Sanak, J. Lardier, M. Royer, P. |
author_facet |
Chazette, P. Dabas, A. Sanak, J. Lardier, M. Royer, P. |
author_sort |
Chazette, P. |
title |
French airborne lidar measurements for Eyjafjallajökull ash plume survey |
title_short |
French airborne lidar measurements for Eyjafjallajökull ash plume survey |
title_full |
French airborne lidar measurements for Eyjafjallajökull ash plume survey |
title_fullStr |
French airborne lidar measurements for Eyjafjallajökull ash plume survey |
title_full_unstemmed |
French airborne lidar measurements for Eyjafjallajökull ash plume survey |
title_sort |
french airborne lidar measurements for eyjafjallajökull ash plume survey |
publisher |
HAL CCSD |
publishDate |
2012 |
url |
https://hal.science/hal-02902895 https://hal.science/hal-02902895/document https://hal.science/hal-02902895/file/acp-12-7059-2012.pdf https://doi.org/10.5194/acp-12-7059-2012 |
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Eyjafjallajökull |
genre_facet |
Eyjafjallajökull |
op_source |
ISSN: 1680-7316 EISSN: 1680-7324 Atmospheric Chemistry and Physics https://hal.science/hal-02902895 Atmospheric Chemistry and Physics, 2012, 12 (15), pp.7059-7072. ⟨10.5194/acp-12-7059-2012⟩ |
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info:eu-repo/semantics/altIdentifier/doi/10.5194/acp-12-7059-2012 hal-02902895 https://hal.science/hal-02902895 https://hal.science/hal-02902895/document https://hal.science/hal-02902895/file/acp-12-7059-2012.pdf doi:10.5194/acp-12-7059-2012 |
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info:eu-repo/semantics/OpenAccess |
op_doi |
https://doi.org/10.5194/acp-12-7059-2012 |
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Atmospheric Chemistry and Physics |
container_volume |
12 |
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15 |
container_start_page |
7059 |
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7072 |
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1810442947886317568 |
spelling |
ftutoulouse3hal:oai:HAL:hal-02902895v1 2024-09-15T18:05:24+00:00 French airborne lidar measurements for Eyjafjallajökull ash plume survey Chazette, P. Dabas, A. Sanak, J. Lardier, M. Royer, P. Laboratoire des Sciences du Climat et de l'Environnement Gif-sur-Yvette (LSCE) Université de Versailles Saint-Quentin-en-Yvelines (UVSQ)-Institut national des sciences de l'Univers (INSU - CNRS)-Université Paris-Saclay-Centre National de la Recherche Scientifique (CNRS)-Direction de Recherche Fondamentale (CEA) (DRF (CEA)) Commissariat à l'énergie atomique et aux énergies alternatives (CEA)-Commissariat à l'énergie atomique et aux énergies alternatives (CEA) Chimie Atmosphérique Expérimentale (CAE) Commissariat à l'énergie atomique et aux énergies alternatives (CEA)-Commissariat à l'énergie atomique et aux énergies alternatives (CEA)-Université de Versailles Saint-Quentin-en-Yvelines (UVSQ)-Institut national des sciences de l'Univers (INSU - CNRS)-Université Paris-Saclay-Centre National de la Recherche Scientifique (CNRS)-Direction de Recherche Fondamentale (CEA) (DRF (CEA)) Centre national de recherches météorologiques (CNRM) Institut national des sciences de l'Univers (INSU - CNRS)-Observatoire Midi-Pyrénées (OMP) Institut de Recherche pour le Développement (IRD)-Université Toulouse III - Paul Sabatier (UT3) Université de Toulouse (UT)-Université de Toulouse (UT)-Institut national des sciences de l'Univers (INSU - CNRS)-Centre National d'Études Spatiales Toulouse (CNES)-Centre National de la Recherche Scientifique (CNRS)-Météo-France-Institut de Recherche pour le Développement (IRD)-Université Toulouse III - Paul Sabatier (UT3) Université de Toulouse (UT)-Université de Toulouse (UT)-Institut national des sciences de l'Univers (INSU - CNRS)-Centre National d'Études Spatiales Toulouse (CNES)-Centre National de la Recherche Scientifique (CNRS)-Météo-France-Centre National de la Recherche Scientifique (CNRS) LEOSPHERE France LEOSPHERE 2012 https://hal.science/hal-02902895 https://hal.science/hal-02902895/document https://hal.science/hal-02902895/file/acp-12-7059-2012.pdf https://doi.org/10.5194/acp-12-7059-2012 en eng HAL CCSD European Geosciences Union info:eu-repo/semantics/altIdentifier/doi/10.5194/acp-12-7059-2012 hal-02902895 https://hal.science/hal-02902895 https://hal.science/hal-02902895/document https://hal.science/hal-02902895/file/acp-12-7059-2012.pdf doi:10.5194/acp-12-7059-2012 info:eu-repo/semantics/OpenAccess ISSN: 1680-7316 EISSN: 1680-7324 Atmospheric Chemistry and Physics https://hal.science/hal-02902895 Atmospheric Chemistry and Physics, 2012, 12 (15), pp.7059-7072. ⟨10.5194/acp-12-7059-2012⟩ [SDU.OCEAN]Sciences of the Universe [physics]/Ocean Atmosphere [SDU.ENVI]Sciences of the Universe [physics]/Continental interfaces environment info:eu-repo/semantics/article Journal articles 2012 ftutoulouse3hal https://doi.org/10.5194/acp-12-7059-2012 2024-06-25T00:14:42Z International audience An UltraViolet Rayleigh-Mie lidar has been integrated aboard the French research aircraft Falcon20 in order to monitor the ash plume emitted by the Eyjafjallajökul volcano in April-May 2010. Three operational flights were carried out on 21 April, 12 and 16 May 2010 inside French, Spanish and British air spaces, respectively. The original purpose of the flights was to provide the French civil aviation authorities with objective information on the presence and location of the ash plume. The present paper presents the results of detailed analyses elaborated after the volcano crisis. They bear on the structure of the ash clouds and their optical properties such as the extinction coefficient and the li-dar ratio. Lidar ratios were measured in the range of 43 to 50 sr, in good agreement with the ratios derived from ground-based lidar near Paris (France) in April 2010 (∼ 48 sr). The ash signature in terms of particulate depolarization was consistent during all flights (between 34 ± 3 % and 38 ± 3 %). Such a value seems to be a good identification parameter for volcanic ash. Using specific cross-sections between 0.19 and 1.1 m 2 g −1 , the minimum (maximal) mass concentrations in the ash plumes derived for the flights on 12 and 16 May were 140 (2300) and 250 (1500) µg m −3 , respectively. It may be rather less than, or of the order of the critical level of damage (2 mg m −3) for the aircraft engines, but well above the 200 µg m −3 warning level. Article in Journal/Newspaper Eyjafjallajökull Université Toulouse III - Paul Sabatier: HAL-UPS Atmospheric Chemistry and Physics 12 15 7059 7072 |