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

Heinold, B. und Tegen, I. und Wolke, R. und Ansmann, A. und Mattis, I. und Minikin, Andreas und Schumann, Ulrich und Weinzierl, Bernadett (2012) Simulations of the 2010 Eyjafjallajökull volcanic ash dispersal over Europe using COSMO-MUSCAT. Atmospheric Environment, online (48), Seiten 195-204. DOI: 10.1016/j.atmosenv.2011.05.021. ISSN 1352-2310.

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

Kurzfassung

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.

Dokumentart:Zeitschriftenbeitrag
Titel:Simulations of the 2010 Eyjafjallajökull volcanic ash dispersal over Europe using COSMO-MUSCAT
Autoren:
AutorenInstitution oder E-Mail-Adresse der Autoren
Heinold, B.IfT, Leipzig
Tegen, I.IfT, Leipzig
Wolke, R.IfT, Leipzig
Ansmann, A.IfT, Leipzig
Mattis, I.IfT, Leipzig
Minikin, AndreasDLR, IPA
Schumann, UlrichDLR, IPA
Weinzierl, BernadettDLR, IPA
Datum:2012
Erschienen in:Atmospheric Environment
Referierte Publikation:Ja
In Open Access:Nein
In SCOPUS:Ja
In ISI Web of Science:Ja
Band:online
DOI :10.1016/j.atmosenv.2011.05.021
Seitenbereich:Seiten 195-204
ISSN:1352-2310
Status:veröffentlicht
Stichwörter:Volcanic ash plume, Eyjafjallajökull, Aerosol transport modelling, COSMO-MUSCAT model
HGF - Forschungsbereich:Luftfahrt, Raumfahrt und Verkehr
HGF - Programm:Luftfahrt
HGF - Programmthema:ATM und Flugbetrieb (alt)
DLR - Schwerpunkt:Luftfahrt
DLR - Forschungsgebiet:L AO - Luftverkehrsmanagement und Flugbetrieb
DLR - Teilgebiet (Projekt, Vorhaben):L - Klima, Wetter und Umwelt (alt)
Standort: Oberpfaffenhofen
Institute & Einrichtungen:Institut für Physik der Atmosphäre > Atmosphärische Spurenstoffe
Hinterlegt von: Jana Freund
Hinterlegt am:01 Aug 2011 12:35
Letzte Änderung:13 Nov 2014 15:03

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