Author(s)

E. Swietlicki, O.H. Berg, J. Zhou and P. Aalto

Abstract

The Effect of Cloud Processing on the Hygroscopic Properties of Aerosol Particles in the Marine Boundary Layer: Preliminary Results from a Hill Cap Cloud Experiment during the ACE-2 Experiment Guest contribution E Swietlicki', OH Berg', J Zhou' and P Aalto' 'Div. of Nuclear Physics, Lund University, P.O. Box 118, S-22100, Lund, Sweden ^Dept. of Physics, University of Helsinki, P.O. Box 9, FIN-00014, Helsinki, Finland Measurements of the hygroscopic properties of submicrometer aerosol particles in marine boundary layer (MBL) air masses were made on the Canary Island of Tenerife during the second Aerosol Characterisation Experiment (ACE-2) in June and July 1997. Two identical Tandem Differential Mobility Analyser (TDMA) systems measured hygroscopic growth of individual aerosol particles when taken from a dry state (RH < 5 %) to a controlled humidified state (nominally 90 or 70 %)

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