At CERN, the European Organisation for Nuclear Research in Geneva, an international research team led by the Paul Scherrer Institute PSI has conducted especially precise measurements of atmospheric ...

Professor Friedrich’s research, for example, focuses on investigating kinematic and microphysical processes relevant for cloud formation. Professor Toohey’s research addresses the role of trace gases ...

Nucleation and gas-to-particle conversion of material are examples of secondary aerosol formation processes. In contrast, aerosol material emitted to the atmosphere directly is known as primary.