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Simulations of the 2010 Eyjafjallajökull volcanic ash dispersal over Europe using COSMO-MUSCAT

Heinold, B. and Tegen, I. and Wolke, R. and Ansmann, A. and Mattis, I. and Minikin, A. and Schumann, U. and Weinzierl , B. (2012) Simulations of the 2010 Eyjafjallajökull volcanic ash dispersal over Europe using COSMO-MUSCAT. Atmospheric Environment, online (48), pp. 195-204. DOI: 10.1016/j.atmosenv.2011.05.021.

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Official URL: http://www.sciencedirect.com/science/article/pii/S1352231011005048

Abstract

The ash plume of the Icelandic volcano Eyjafjallajökull covering Europe in April and May 2010 has notably attracted the interest of atmospheric researchers. Emission, transport, and deposition of the volcanic ash are simulated with the regional chemistry-transport model COSMOeMUSCAT. Key input parameters for transport models are the ash injection height, which controls the ash layer height during long-range transport, and the initial particle size distribution, which influences the sedimentation velocity. For each model layer, relative release rates are parameterised using stereo-derived plume heights from NASA’s space-borne Multi-angle Imaging SpectroRadiometer (MISR) observations near the source. With this model setup the ash is emitted at several levels beneath the maximum plume heights reported by the Volcanic Ash Advisory Centre (VAAC) London. The initial particle size distribution used in COSMOeMUSCAT is derived from airborne in-situ measurements. In addition, the impact of different injection heights on the vertical distribution of the volcanic ash plume over Europe is shown. Ash emissions at specific control levels allow to assess the relative contribution of each layer to the spatial distribution after transport. The model results are compared to aerosol optical depths from European Sun photometer sites, lidar profiles measured over Leipzig/Germany, and ground-based microphysical measurements from several German air quality stations. In particular the good agreement between modelled vertical profiles of volcanic ash and lidar observations indicates that using the MISR stereoheight retrievals to characterize atmospheric ash input provide an alternative to injection height models in case of lacking information on eruption dynamics.

Document Type:Article
Title:Simulations of the 2010 Eyjafjallajökull volcanic ash dispersal over Europe using COSMO-MUSCAT
Authors:
AuthorsInstitution or Email of Authors
Heinold, B.ift Leipzig
Tegen, I.ift Leipzig
Wolke, R.ift Leipzig
Ansmann, A. ift Leipzig
Mattis, I.ift Leipzig
Minikin, A.DLR
Schumann, U.DLR
Weinzierl , B.DLR
Date:2012
Journal or Publication Title:Atmospheric Environment
Refereed publication:Yes
In Open Access:No
In SCOPUS:Yes
In ISI Web of Science:Yes
Volume:online
DOI:10.1016/j.atmosenv.2011.05.021
Page Range:pp. 195-204
Status:Published
Keywords:Volcanic ash plume, Eyjafjallajökull, Aerosol transport modelling, COSMO-MUSCAT model
HGF - Research field:Aeronautics, Space and Transport
HGF - Program:Aeronautics
HGF - Program Themes:ATM and Operation
DLR - Research area:Aeronautics
DLR - Program:L AO - Air Traffic Management and Operation
DLR - Research theme (Project):L - Climate, Weather and Environment
Location: Oberpfaffenhofen
Institutes and Institutions:Institute of Atmospheric Physics > Atmospheric Trace Species
Deposited By: Jana Freund
Deposited On:01 Aug 2011 12:35
Last Modified:26 Mar 2013 13:30

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