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          Institute: MPI für Meteorologie     Collection: Climate Processes     Display Documents

ID: 174025.0, MPI für Meteorologie / Climate Processes
Long-range transport of Saharan dust to northern Europe: The 11-16 October 2001 outbreak observed with EARLINET
Authors:Ansmann, A.; Bösenberg, Jéns; Chaikovsky, A.; Comeron, A.; Eckhardt, S.; Eixmann, Ronald; Freudenthaler, V.; Ginoux, P.; Komguem, L.; Linné, Holger; Marquez, M. A. L.; Matthias, Volker; Mattis, I.; Mitev, V.; Müller, D.; Music, S.; Nickovic, S.; Pelon, J.; Sauvage, L.; Sobolewsky, P.; Srivastava, M. K.; Stohl, A.; Torres, O.; Vaughan, G.; Wandinger, U.; Wiegner, M.
Date of Publication (YYYY-MM-DD):2003-12-24
Title of Journal:Journal of Geophysical Research-Atmospheres
Journal Abbrev.:J. Geophys. Res.-Atmos.
Issue / Number:D24
Sequence Number of Article:4783
Review Status:Peer-review
Audience:Not Specified
Abstract / Description:The spread of mineral particles over southwestern, western, and central Europe resulting from a strong Saharan dust outbreak in October 2001 was observed at 10 stations of the European Aerosol Research Lidar Network (EARLINET). For the first time, an optically dense desert dust plume over Europe was characterized coherently with high vertical resolution on a continental scale. The main layer was located above the boundary layer ( above 1-km height above sea level (asl)) up to 3 - 5- km height, and traces of dust particles reached heights of 7 - 8 km. The particle optical depth typically ranged from 0.1 to 0.5 above 1-km height asl at the wavelength of 532 nm, and maximum values close to 0.8 were found over northern Germany. The lidar observations are in qualitative agreement with values of optical depth derived from Total Ozone Mapping Spectrometer ( TOMS) data. Ten-day backward trajectories clearly indicated the Sahara as the source region of the particles and revealed that the dust layer observed, e. g., over Belsk, Poland, crossed the EARLINET site Aberystwyth, UK, and southern Scandinavia 24 - 48 hours before. Lidar-derived particle depolarization ratios, backscatter- and extinction-related Angstrom exponents, and extinction-to-backscatter ratios mainly ranged from 15 to 25%, - 0.5 to 0.5, and 40 - 80 sr, respectively, within the lofted dust plumes. A few atmospheric model calculations are presented showing the dust concentration over Europe. The simulations were found to be consistent with the network observations.
Comment of the Author/Creator:Date: 2003, DEC 24
External Publication Status:published
Document Type:Article
Affiliations:MPI für Meteorologie/Climate Processes
External Affiliations:Leibniz Inst Troposphärenforsch, D-04318 Leipzig, Germany.; Max Planck Inst Meteorol, D-20146 Hamburg, Germany.; Natl Acad Sci Belarus, Inst Phys, Minsk 220072, Byelarus.; Univ Politecn Catalunya, Dept TSC, ES-08034 Barcelona, Spain.; Tech Univ Munich, D-85354 Freising Weihenstephan, Germany.; Leibniz Inst Atmosphärenphys, D-18225 Kühlungsborn, Germany.; Univ Munich, Inst Meteorol, D-80333 Munich, Germany.; NOAA, Geophys Fluid Dynam Lab, Princeton, NJ 08542 USA.; Univ Wales, Dept Phys, Aberystwyth SY23 3BZ, Ceredigion, Wales.; Observ Cantonal, Neuchatel, Switzerland.; Univ Malta, Euromediterranean Ctr Insular Coastal Dynam, Valletta, Malta.; Univ Paris 06, CNRS, Serv Aeron, F-75252 Paris, France.; Inst Pierre Simon Laplace, Meteorol Dynam Lab, F-91128 Palaiseau, France.; Polish Acad Sci, Inst Geophys, PL-01452 Warsaw, Poland.; NASA, Goddard Space Flight Ctr, Greenbelt, MD 20771 USA.
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