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UP: Fachverband Umweltphysik

UP 4: Postersession

UP 4.10: Poster

Dienstag, 26. Februar 2013, 17:15–18:30, Poster EG

In situ characterization of mixed phase cloud ice particles. — •Paul Vochezer, Martin Schnaiter, Ahmed Abdelmonem, and Thomas Leisner — Karlsruhe Institute of Technology IMK-AAF, Germany

Clouds alter the Earth's radiative properties and are a major component of the hydrological cycle. A common cloud type in mid-latitudes are mixed phase clouds which contain both ice particles and water droplets. The state of the ice phase is of great importance to the lifetime and the radiative properties of mixed phase clouds. In order to characterize cloud particles in number, size, phase and morphology we deployed a set of three instruments during a cloud chamber campaign (AIDA-RICE01) and a field campaign (CLACE2013). The Small Ice Detector (SID) and the Particle Phase Discriminator (PPD) generate high resolution scattering patterns of individual cloud particles from which the particles size, phase and morphology can be inferred. During CLACE2013 the PPD was operated as part of the novel Ice Selective Inlet (ISI) which was constructed in close cooperation at PSI, Switzerland. The ISI selectively samples ice particles from mixed phase clouds and thus allows for a highly detailed analysis of the ice phase particles with the PPD. The Particle Habit Imaging and Polar Scattering instrument (PHIPS) records both real images and the scattering phase function of individual cloud particles. The PHIPS data complements the output of the other instruments. First ice particle microphysics results from the AIDA-RICE01 and CLACE2013 campaign are presented.