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CCN activation of slightly soluble organics: the importance of small amounts of inorganic salt and particle phase
Article first published online: 22 MAR 2004
DOI: 10.1111/j.1600-0889.2004.00090.x
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How to Cite
BILDE, M. and SVENNINGSSON, B. (2004), CCN activation of slightly soluble organics: the importance of small amounts of inorganic salt and particle phase. Tellus B, 56: 128–134. doi: 10.1111/j.1600-0889.2004.00090.x
Publication History
- Issue published online: 22 MAR 2004
- Article first published online: 22 MAR 2004
- (Manuscript received 26 February 2003; in final form 15 August 2003)
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ABSTRACT
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 importantly 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 the particle phase and thereby the humidity history is important for interpretation of experimental data and modelling of the aerosol indirect climate effect.