Holger Siebert

TL;DR: The European Aerosol Cloud Climate and Air Quality Interactions project (EUCAARI) as mentioned in this paper was the first project to study aerosol processes fron nano to global scale and their effects on climate and air quality.

TL;DR: In this article, a transition length scale is introduced to separate the inertial subrange into a range of length scales for which mixing between ambient dry and cloudy air is inhomogeneous, and a range for which the mixing is homogeneous.

TL;DR: In this paper, the authors presented tethered balloon-borne measurements with a resolution in the order of 10 cm in a cloudy boundary layer and showed that basic ideas of classical turbulence theory in boundary layer clouds are valid even to the decimeter scale.

TL;DR: The MOSAiC program as mentioned in this paper was organized into four subgroups: atmospheric state, clouds and precipitation, gases and aerosols, and energy budgets, using a variety of approaches, and across multiple scales.

TL;DR: In this paper, the interaction between turbulence and cloud microphysical processes is demonstrated using the following two cloud cases from recent helicopter measurements: i) a cumulus cloud with a low degree of turbulence and without strong vertical dynamics, and, in contrast, an actively growing cloud with increased turbulence and stronger updrafts.