The research and teaching activities of the lab and field group focus on aerosol-cloud interactions, cloud microphysics and laboratory studies in atmospheric science. The main goal of the research is to increase the basic understanding of how and which aerosols act as cloud condensation (CCN) and ice nuclei (IN), the importance of aerosols chemical composition on CCN and IN-activity, and the corresponding influ¬ence on climate. The basic research is conducted in laboratory and field experiments using instrumenta¬tion that is either built-in-house or purchased.
Besides the instrumentation developed by our own group mainly for the ice-nucleation experiments, the laboratory equipment includes a variety of purchased instrumentation to measure basic physical and chemical particle properties as well as instrumentation for particle generation and sampling. The former includes the measurement of the particle number concentration (Condensation Particle Counters, Optical Particle Counters), the particle size distribution (Scanning Mobility Particle Sizers, Aerodynamic Particle Sizers), the droplet size distribution (Fog Monitor), and the particle chemical composition (Aerosol Mass Spectrometer). The instrumentation for particle production includes “dry” (Fluidized Bed Generator, Dust Generator) and “wet” (Atomizer, Ultrasonic Nebulizer) particle disperser and droplet generators (Vibrating Orifice Generator, Luis’ instrument).
A permanent set-up to study aerosol-trace gas interactions with respect to cloud formation is under construction. This includes an aerosol tank / aerosol mixing chamber with a total volume of approx. 2.7 m3.
From left to right (when standing still): Peter Isler, Claudia Marcolli, Berko Sierau, Manuel Abegglen, Larissa Lacher, Amewu Mensah, Monika Kohn, Zamin Kanji, Ulrike Lohmann, Yvonne Boose, Baban Nagare, Jan Henneberger, Joel Corbin.
Not appearing on this picture: Hannes Wydler, André Welti
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