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Göran Frank

Director of graduate studies

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Inversion of droplet aerosol analyzer data for long-term aerosol-cloud interaction measurements

Author

  • Maria Berghof
  • Göran Frank
  • Staffan Sjögren
  • Bengt Martinsson

Summary, in English

The droplet aerosol analyzer (DAA) was developed to study the influence of aerosol properties on clouds. It measures the ambient particle size of individual droplets and interstitial particles, the size of the dry (residual) particles after the evaporation of water vapor and the number concentration of the dry (residual) particles. A method was developed for the evaluation of DAA data to obtain the three-parameter data set: ambient particle diameter, dry (residual) particle diameter and number concentration. First results from in-cloud measurements performed on the summit of Mt. Brocken in Germany are presented. Various aspects of the cloud-aerosol data set are presented, such as the number concentration of interstitial particles and cloud droplets, the dry residue particle size distribution, droplet size distributions, scavenging ratios due to cloud droplet formation and size-dependent solute concentrations. This data set makes it possible to study clouds and the influence of the aerosol population on clouds.

Department/s

  • Nuclear physics
  • MERGE: ModElling the Regional and Global Earth system

Publishing year

2014

Language

English

Pages

877-886

Publication/Series

Atmospheric Measurement Techniques

Volume

7

Issue

4

Document type

Journal article

Publisher

Copernicus Gesellschaft mbH

Topic

  • Subatomic Physics

Status

Published

ISBN/ISSN/Other

  • ISSN: 1867-1381