Recently it has been shown in several studies that the atmospheric Secondary Organic Aerosol (SOA) particles can be amorphous solid in their physical state. By newly developed research methods it’s possible to quantify the viscosity of the SOA material and further to estimate the possible impacts of semisolid phase to atmospherically relevant processes. It has been suggested that the solid phase of the particles may imply kinetic limitations to achieve equilibrium partitioning between the gas phase and the particles. It has also been suggested that the water uptake of such solid SOA particles might be diminished or even fully inhibited, with implications for the particles’ size and scattering properties and their aerosol direct effect on climate. In my talk I will present an overview on current understanding on viscosity range of SOA particles in atmospherically relevant conditions and also discuss about the impacts of the phase on SOA particle water up-take and on partitioning of organic vapours.

This event is part of the eventgroup Meteorology Colloquium Karlsruhe

Speaker
Prof. Dr. Annele Virtanen

University of Eastern Finland in Kuopio, Finland
Aerosol physics research group

Organizer
Institut für Meteorologie und Klimaforschung
Karlsruher Institut für Technologie (KIT)
Hermann von Helmholtz Platz 1
76344 Eggenstein-Leopoldshafen
Tel: 0721-608-0
Mail: sekretariat ∂does-not-exist.imk-asf kit edu

Targetgroup
Scientific Staff