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CCN Activation of Slightly Soluble Organics: Importance of Small Amounts of Inorganic Salt and Particle Phase

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Author

Summary, in English

Using a static thermal-gradient diffusion cloud condensation nucleus chamber we study the effect of small amounts of inorganic salts on the cloud droplet activation of two slightly soluble organic aerosol components (adipic and succinic acid) and experimentally confirm the two maxima predicted by Köhler theory modified to take limited solubility into account. Equally important we suggest (and confirm experimentally) that solid and liquid (supersaturated) particles of slightly soluble organic compounds follow two different Köhler curves and that knowledge about particle phase and thereby humidity history is important for interpretation of experimental data and modelling of the aerosol indirect climate effect.

Publishing year

2004

Language

English

Pages

128-134

Publication/Series

Tellus. Series B: Chemical and Physical Meteorology

Volume

56B

Issue

2

Document type

Journal article

Publisher

Taylor & Francis

Topic

  • Physical Geography
  • Subatomic Physics

Status

Published

Research group

  • Aerosol, Nuclear Physics

ISBN/ISSN/Other

  • ISSN: 0280-6509