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Atmospheric Measurement Techniques An interactive open-access journal of the European Geosciences Union
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Volume 7, issue 4
Atmos. Meas. Tech., 7, 877–886, 2014
https://doi.org/10.5194/amt-7-877-2014
© Author(s) 2014. This work is distributed under
the Creative Commons Attribution 3.0 License.
Atmos. Meas. Tech., 7, 877–886, 2014
https://doi.org/10.5194/amt-7-877-2014
© Author(s) 2014. This work is distributed under
the Creative Commons Attribution 3.0 License.

Research article 04 Apr 2014

Research article | 04 Apr 2014

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

M. I. A. Berghof1, G. P. Frank1, S. Sjogren1,*, and B. G. Martinsson1 M. I. A. Berghof et al.
  • 1Department of Physics, Lund University, Lund, Sweden
  • *now at: University of Applied Sciences Northwestern Switzerland, Brugg-Windisch, Switzerland

Abstract. 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.

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