Cloud droplet formation in unsaturated and supersaturated water vapor

The hygroscopicity of aerosol particles has a decisive influence on the dynamics of clouds and precipitation and thus indirectly affects the intensity of radiative fluxes. It also has a decisive influence on the deposition of inhaled aerosol particles in the human respiratory tract and thus on the health effects of aerosol. Therefore, the study of hygroscopicity is an important direction of aerosol research. Some particles also grow in the region of unsaturated water vapor and can contribute significantly to the uniform formation of clouds. In supersaturated water vapor, cloud droplet formation on particles is much more likely, even if the particles are not readily soluble in water. We will focus on both mechanisms when studying the hygroscopicity of atmospheric aerosols using a combination of the humidifying tandem differential mobility analyzer HTDMA and the cloud condensation nuclei counter CCNC.

Required education and skills

• University degree (Ing. Mgr.) in environmental sciences, meteorology, chemical engineering, physical chemistry, chemical physics, etc.
• willingness to do experimental work and learn new things;
• ability to work as part of a team.

Supervisor: Vladimír Ždímal, Dr.

Co-supervisors: Adéla Holubová, Ph.D., Naděžda Zíková, Ph.D.