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Träfflista för sökning "WFRF:(SVENNINGSSON I. B.) srt2:(1995-1999)"

Sökning: WFRF:(SVENNINGSSON I. B.) > (1995-1999)

  • Resultat 1-5 av 5
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1.
  • Choularton, T. W., et al. (författare)
  • The Great Dun Fell Cloud Experiment 1993 : An overview
  • 1997
  • Ingår i: Atmospheric Environment. - 1352-2310. ; 31:16, s. 2393-2405
  • Tidskriftsartikel (refereegranskat)abstract
    • The 1993 Ground-based Cloud Experiment on Great Dun Fell used a wide range of measurements of trace gases, aerosol particles and cloud droplets at five sites to study their sources and sinks especially those in cloud. These measurements have been interpreted using a variety of models. The conclusions add to our knowledge of air pollution, acidification of the atmosphere and the ground, eutrophication and climate change. The experiment is designed to use the hill cap cloud as a flow-through reactor, and was conducted in varying levels of pollution typical of much of the rural temperate continental northern hemisphere in spring-time.
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2.
  • Cederfelt, S. I., et al. (författare)
  • Field validation of the droplet aerosol analyser
  • 1997
  • Ingår i: Atmospheric Environment. - 1352-2310. ; 31:16, s. 2657-2670
  • Tidskriftsartikel (refereegranskat)abstract
    • A new instrument for the study of cloud droplets and its relation to aerosol particles, the droplet aerosol analyser (DAA), was for the first time used in a field campaign. The DAA has the unique feature of measuring the ambient size of cloud droplets or cloud interstitial aerosol particles together with the size of its dry residue. This is obtained with a two-parameter data acquisition technique which results in a three-dimensional data set (ambient size, dry residue size, number concentration). The principle and design of the DAA is briefly described. The DAA was intercompared with differential mobility particle sizers, particulate volume monitors and a forward scattering spectrometer probe with respect to interstitial and cloud droplet dry residue size distribution as well as particle-size-dependent scavenging due to cloud droplet nucleation and for cloud droplet number concentration and size distribution and cloud liquid water concentration. Overall, the DAA showed good agreement with respect to all these six aerosol/cloud properties.
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3.
  • Martinsson, B. G., et al. (författare)
  • Experimental determination of the connection between cloud droplet size and its dry residue size
  • 1997
  • Ingår i: Atmospheric Environment. - 1352-2310. ; 31:16, s. 2477-2490
  • Tidskriftsartikel (refereegranskat)abstract
    • The droplet activation process and droplet growth was studied during early stages of the formation of orographically-induced clouds. The experimental results were compared with the results obtained with a closed parcel, adiabatic cloud model. Good agreement was in most cases found between model and measurements with respect to cloud droplet number concentration, cloud droplet solute concentration and particle sizes scavenged due to cloud droplet nucleation. The experimental results were mainly obtained with a new instrument, the droplet aerosol analyser (DAA), which allows the determination of ambient sizes of cloud droplets and interstitial aerosol particles directly connected with the size of its dry residue in a two-parameter data acquisition. The resulting three-dimensional data set (ambient size, dry size, number concentration) was utilised to determine several cloud/aerosol properties, whereof some unique.
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  • Resultat 1-5 av 5

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