Modelling the volcanic ash plume from Eyjafjallajökull eruption (May 2010) over Europe: evaluation of the benefit of source term improvements and of the assimilation of aerosol measurements
International audience Abstract. Numerical dispersion models are used operationally worldwide to mitigate the effect of volcanic ash on aviation. In order to improve the representation of the horizontal dispersion of ash plumes and of the 3D concentration of ash, a study was conducted using the MOCA...
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Online Access: | https://hal.science/hal-03484554 https://hal.science/hal-03484554/document https://hal.science/hal-03484554/file/nhess-21-3731-2021.pdf https://doi.org/10.5194/nhess-21-3731-2021 |
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ftunivnantes:oai:HAL:hal-03484554v1 2023-05-15T16:09:37+02:00 Modelling the volcanic ash plume from Eyjafjallajökull eruption (May 2010) over Europe: evaluation of the benefit of source term improvements and of the assimilation of aerosol measurements Plu, Matthieu Bigeard, Guillaume Sič, Bojan Emili, Emanuele Bugliaro, Luca El Amraoui, Laaziz Guth, Jonathan Josse, Beatrice Mona, Lucia Piontek, Dennis 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 Fédérale Toulouse Midi-Pyrénées-Université Fédérale Toulouse Midi-Pyrénées-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 Fédérale Toulouse Midi-Pyrénées-Université Fédérale Toulouse Midi-Pyrénées-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) 2021 https://hal.science/hal-03484554 https://hal.science/hal-03484554/document https://hal.science/hal-03484554/file/nhess-21-3731-2021.pdf https://doi.org/10.5194/nhess-21-3731-2021 en eng HAL CCSD Copernicus Publ. / European Geosciences Union info:eu-repo/semantics/altIdentifier/doi/10.5194/nhess-21-3731-2021 hal-03484554 https://hal.science/hal-03484554 https://hal.science/hal-03484554/document https://hal.science/hal-03484554/file/nhess-21-3731-2021.pdf doi:10.5194/nhess-21-3731-2021 http://creativecommons.org/licenses/by/ info:eu-repo/semantics/OpenAccess ISSN: 1561-8633 EISSN: 1684-9981 Natural Hazards and Earth System Sciences https://hal.science/hal-03484554 Natural Hazards and Earth System Sciences, 2021, 21 (12), pp.3731-3747. ⟨10.5194/nhess-21-3731-2021⟩ [SDU.OCEAN]Sciences of the Universe [physics]/Ocean Atmosphere info:eu-repo/semantics/article Journal articles 2021 ftunivnantes https://doi.org/10.5194/nhess-21-3731-2021 2023-02-22T02:32:55Z International audience Abstract. Numerical dispersion models are used operationally worldwide to mitigate the effect of volcanic ash on aviation. In order to improve the representation of the horizontal dispersion of ash plumes and of the 3D concentration of ash, a study was conducted using the MOCAGE model during the European Natural Airborne Disaster Information and Coordination System for Aviation (EUNADICS-AV) project. Source term modelling and assimilation of different data were investigated. A sensitivity study of source term formulation showed that a resolved source term, using the FPLUME plume rise model in MOCAGE, instead of a parameterised source term, induces a more realistic representation of the horizontal dispersion of the ash plume. The FPLUME simulation provides more concentrated and focused ash concentrations in the horizontal and the vertical dimensions than the other source term. The assimilation of Moderate Resolution Imaging Spectroradiometer (MODIS) aerosol optical depth has an impact on the horizontal dispersion of the plume, but this effect is rather low and local compared to source term improvement. More promising results are obtained with the continuous assimilation of ground-based lidar profiles, which improves the vertical distribution of ash and helps in reaching realistic values of ash concentrations. Using this configuration, the effect of assimilation may last for several hours and it may propagate several hundred kilometres downstream of the lidar profiles. Article in Journal/Newspaper Eyjafjallajökull Université de Nantes: HAL-UNIV-NANTES Natural Hazards and Earth System Sciences 21 12 3731 3747 |
institution |
Open Polar |
collection |
Université de Nantes: HAL-UNIV-NANTES |
op_collection_id |
ftunivnantes |
language |
English |
topic |
[SDU.OCEAN]Sciences of the Universe [physics]/Ocean Atmosphere |
spellingShingle |
[SDU.OCEAN]Sciences of the Universe [physics]/Ocean Atmosphere Plu, Matthieu Bigeard, Guillaume Sič, Bojan Emili, Emanuele Bugliaro, Luca El Amraoui, Laaziz Guth, Jonathan Josse, Beatrice Mona, Lucia Piontek, Dennis Modelling the volcanic ash plume from Eyjafjallajökull eruption (May 2010) over Europe: evaluation of the benefit of source term improvements and of the assimilation of aerosol measurements |
topic_facet |
[SDU.OCEAN]Sciences of the Universe [physics]/Ocean Atmosphere |
description |
International audience Abstract. Numerical dispersion models are used operationally worldwide to mitigate the effect of volcanic ash on aviation. In order to improve the representation of the horizontal dispersion of ash plumes and of the 3D concentration of ash, a study was conducted using the MOCAGE model during the European Natural Airborne Disaster Information and Coordination System for Aviation (EUNADICS-AV) project. Source term modelling and assimilation of different data were investigated. A sensitivity study of source term formulation showed that a resolved source term, using the FPLUME plume rise model in MOCAGE, instead of a parameterised source term, induces a more realistic representation of the horizontal dispersion of the ash plume. The FPLUME simulation provides more concentrated and focused ash concentrations in the horizontal and the vertical dimensions than the other source term. The assimilation of Moderate Resolution Imaging Spectroradiometer (MODIS) aerosol optical depth has an impact on the horizontal dispersion of the plume, but this effect is rather low and local compared to source term improvement. More promising results are obtained with the continuous assimilation of ground-based lidar profiles, which improves the vertical distribution of ash and helps in reaching realistic values of ash concentrations. Using this configuration, the effect of assimilation may last for several hours and it may propagate several hundred kilometres downstream of the lidar profiles. |
author2 |
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 Fédérale Toulouse Midi-Pyrénées-Université Fédérale Toulouse Midi-Pyrénées-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 Fédérale Toulouse Midi-Pyrénées-Université Fédérale Toulouse Midi-Pyrénées-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) |
format |
Article in Journal/Newspaper |
author |
Plu, Matthieu Bigeard, Guillaume Sič, Bojan Emili, Emanuele Bugliaro, Luca El Amraoui, Laaziz Guth, Jonathan Josse, Beatrice Mona, Lucia Piontek, Dennis |
author_facet |
Plu, Matthieu Bigeard, Guillaume Sič, Bojan Emili, Emanuele Bugliaro, Luca El Amraoui, Laaziz Guth, Jonathan Josse, Beatrice Mona, Lucia Piontek, Dennis |
author_sort |
Plu, Matthieu |
title |
Modelling the volcanic ash plume from Eyjafjallajökull eruption (May 2010) over Europe: evaluation of the benefit of source term improvements and of the assimilation of aerosol measurements |
title_short |
Modelling the volcanic ash plume from Eyjafjallajökull eruption (May 2010) over Europe: evaluation of the benefit of source term improvements and of the assimilation of aerosol measurements |
title_full |
Modelling the volcanic ash plume from Eyjafjallajökull eruption (May 2010) over Europe: evaluation of the benefit of source term improvements and of the assimilation of aerosol measurements |
title_fullStr |
Modelling the volcanic ash plume from Eyjafjallajökull eruption (May 2010) over Europe: evaluation of the benefit of source term improvements and of the assimilation of aerosol measurements |
title_full_unstemmed |
Modelling the volcanic ash plume from Eyjafjallajökull eruption (May 2010) over Europe: evaluation of the benefit of source term improvements and of the assimilation of aerosol measurements |
title_sort |
modelling the volcanic ash plume from eyjafjallajökull eruption (may 2010) over europe: evaluation of the benefit of source term improvements and of the assimilation of aerosol measurements |
publisher |
HAL CCSD |
publishDate |
2021 |
url |
https://hal.science/hal-03484554 https://hal.science/hal-03484554/document https://hal.science/hal-03484554/file/nhess-21-3731-2021.pdf https://doi.org/10.5194/nhess-21-3731-2021 |
genre |
Eyjafjallajökull |
genre_facet |
Eyjafjallajökull |
op_source |
ISSN: 1561-8633 EISSN: 1684-9981 Natural Hazards and Earth System Sciences https://hal.science/hal-03484554 Natural Hazards and Earth System Sciences, 2021, 21 (12), pp.3731-3747. ⟨10.5194/nhess-21-3731-2021⟩ |
op_relation |
info:eu-repo/semantics/altIdentifier/doi/10.5194/nhess-21-3731-2021 hal-03484554 https://hal.science/hal-03484554 https://hal.science/hal-03484554/document https://hal.science/hal-03484554/file/nhess-21-3731-2021.pdf doi:10.5194/nhess-21-3731-2021 |
op_rights |
http://creativecommons.org/licenses/by/ info:eu-repo/semantics/OpenAccess |
op_doi |
https://doi.org/10.5194/nhess-21-3731-2021 |
container_title |
Natural Hazards and Earth System Sciences |
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21 |
container_issue |
12 |
container_start_page |
3731 |
op_container_end_page |
3747 |
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