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dc.contributor.authorMueller, D.
dc.contributor.authorAnsmann, A.
dc.contributor.authorWagner, F.
dc.contributor.authorFranke, K.
dc.contributor.authorAlthausen, D.
dc.identifier.citationMueller , D , Ansmann , A , Wagner , F , Franke , K & Althausen , D 2002 , ' European pollution outbreaks during ACE 2 : Microphysical particle properties and single-scattering albedo inferred from multiwavelength lidar observations ' , Journal of Geophysical Research: Atmospheres , vol. 107 , no. D15 , 4248 , pp. AAC 3.1- AAC 3.11 .
dc.identifier.otherPURE: 1982205
dc.identifier.otherPURE UUID: eafd853c-3a50-4e73-9b0b-2775ffb71588
dc.identifier.otherWOS: 000178977400023
dc.identifier.otherScopus: 32244445377
dc.identifier.otherORCID: /0000-0002-0203-7654/work/68611596
dc.identifier.otherScopus: 36448939095
dc.description.abstractWe present vertically resolved physical particle properties and the single-scattering albedo at 532 nm of pollution plumes advected from the European continent out over the Atlantic Ocean. The parameters follow from the inversion of optical data, which were obtained from six-wavelength aerosol lidar observations near Sagres (37degreesN, 9degreesW), Portugal, in the framework of Aerosol Characterization Experiment 2 (ACE 2) (June-July 1997). Particle effective radii were 0.15 +/- 0.06 m m, volume concentrations ranged from 6 to 27 mum(3) cm(-3), and surface area concentrations were 80 to 1200 mum(2) cm(-3). The particles in general showed negligible absorption, with the mean imaginary part of the wavelength-independent complex refractive index being at 0.009i +/- 0.010i. The mean real part was 1.56 +/- 0.07. A mean value of 0.95 +/- 0.06 was obtained for the single-scattering albedo at 532 nm. The numbers indicate that the major contributor to the observed pollution was nonabsorbing ammonium-sulfate-like material. A very small fraction was contributed by absorbing sootlike material. Correlation analysis showed that effective radius was well correlated with the Angstrom exponents of the underlying extinction spectra. Furthermore, correlations of the single-scattering albedo with the particle extinction-to-backscatter ratio and with the imaginary part of the complex refractive index were found. This result shows that the first two parameters contain information about the chemical state of the observed particles.en
dc.relation.ispartofJournal of Geophysical Research: Atmospheres
dc.subjectACE 2
dc.subjectEuropean pollution
dc.subjectMicrophysical particle properties
dc.subjectSingle-scattering albedo
dc.subjectAquatic Science
dc.subjectWater Science and Technology
dc.subjectSoil Science
dc.subjectGeochemistry and Petrology
dc.subjectEarth-Surface Processes
dc.subjectAtmospheric Science
dc.subjectEarth and Planetary Sciences (miscellaneous)
dc.subjectSpace and Planetary Science
dc.titleEuropean pollution outbreaks during ACE 2 : Microphysical particle properties and single-scattering albedo inferred from multiwavelength lidar observationsen
dc.contributor.institutionCentre for Atmospheric and Climate Physics Research
dc.contributor.institutionSchool of Physics, Engineering & Computer Science
dc.contributor.institutionDepartment of Physics, Astronomy and Mathematics
dc.description.statusPeer reviewed
rioxxterms.typeJournal Article/Review

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