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The ash dispersion over Europe during the Eyjafjallajökull eruption e Comparison of CMAQ simulations to remote sensing and air-borne in-situ observations

Matthias, Volker und Aulinger, Armin und Bieser, Johannes und Cuesta, Juan und Geyer, Beate und Langmann, Bärbel und Serikov, Ilya und Mattis, Ina und Minikin, Andreas und Mona, Lucia und Quante, Markus und Schumann, Ulrich und Weinzierl, Bernadett (2012) The ash dispersion over Europe during the Eyjafjallajökull eruption e Comparison of CMAQ simulations to remote sensing and air-borne in-situ observations. Atmospheric Environment, 48, Seiten 184-194. DOI: 10.1016/j.atmosenv.2011.06.077. ISSN 1352-2310.

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Offizielle URL: http://ac.els-cdn.com/S1352231011007011/1-s2.0-S1352231011007011-main.pdf?_tid=e81f6caf4a1e20671f83d0bbd449bf69&acdnat=1342439796_d1cf10d84f655048169528ee1556841c

Kurzfassung

The dispersion of volcanic ash over Europe after the outbreak of the Eyjafjallajökull on Iceland on 14 April 2010 has been simulated with a conventional three-dimensional Eulerian chemistry transport model system, the Community Multiscale Air Quality (CMAQ) model. Four different emission scenarios representing the lower and upper bounds of the emission height and intensity were considered. The atmospheric ash concentrations turned out to be highly variable in time and space. The model results were compared to three different kinds of observations: Aeronet aerosol optical depth (AOD) measurements, Earlinet aerosol extinction profiles and in-situ observations of the ash concentration by means of optical particle counters aboard the DLR Falcon aircraft. The model was able to reproduce observed AOD values and atmospheric ash concentrations. Best agreement was achieved for lower emission heights and a fraction of 2% transportable ash in the total volcanic emissions. The complex vertical structure of the volcanic ash layers in the free troposphere could not be simulated. Compared to the observations, the model tends to show vertically more extended, homogeneous aerosol layers. This is caused by a poor vertical resolution of the model at higher altitudes and a lack of information about the vertical distribution of the volcanic emissions. Only a combination of quickly available observations of the volcanic ash cloud and atmospheric transport models can give a comprehensive picture of ash concentrations in the atmosphere.

Dokumentart:Zeitschriftenbeitrag
Titel:The ash dispersion over Europe during the Eyjafjallajökull eruption e Comparison of CMAQ simulations to remote sensing and air-borne in-situ observations
Autoren:
AutorenInstitution oder E-Mail-Adresse der Autoren
Matthias, VolkerHelmholtz-Zentrum Geesthacht, Geesthacht
Aulinger, ArminHelmholtz-Zentrum Geesthacht, Geesthacht
Bieser, JohannesHelmholtz-Zentrum Geesthacht, Geesthacht
Cuesta, JuanUniv. Paris Est Créteil, Créteil Cedex, F
Geyer, BeateHelmholtz-Zentrum Geesthacht, Geesthacht
Langmann, BärbelUniv. of Hamburg, Hamburg
Serikov, IlyaMax-Planck-Institut für Meteorologie, Hamburg
Mattis, InaLeibniz Institute for Tropospheric Research, Leipzig
Minikin, AndreasDLR, IPA
Mona, LuciaCNR-IMAA, Potenza, I
Quante, MarkusHelmholtz-Zentrum Geesthacht, Geesthacht
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:48
DOI :10.1016/j.atmosenv.2011.06.077
Seitenbereich:Seiten 184-194
ISSN:1352-2310
Status:veröffentlicht
Stichwörter:Volcanic eruption, Ash dispersion, Chemistry transport model, Lidar, Sun photometer, Ash concentration
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:16 Jul 2012 13:54
Letzte Änderung:13 Nov 2014 14:59

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