Tuukka Petäjä

TL;DR: In this article, the authors analyzed the influence of different parameters on the contribution of ion-induced nucleation to the total particle formation rate, and proposed explanations on how these different parameters could influence neutral and ion induced nucleation, and showed that the different mechanisms seem to take place at the same time during an event.

TL;DR: This protocol describes the instrumentation and analysis methods needed to quantify particles dynamics during new particle formation of sub-3-nm aerosol particles in chamber experiments and outlines methods to directly quantify particle dynamics for cluster sizes.

TL;DR: In this paper, the authors provided the first quantitative estimate regarding the terrestrial climate feedback loop connecting the increasing atmospheric carbon dioxide concentration, changes in gross primary production (GPP) associated with the carbon uptake, organic aerosol formation in the atmosphere, and transfer of both diffuse and global radiation.

TL;DR: In this paper, the Airmodus A11 nano Condensation Nucleus Counter (nCNC) is used to measure the background concentration of homogeneously nucleated droplets.

TL;DR: This study provides new insights into the chemical relationship of HOM abundance, composition, and sources with the yield of radicals by laboratory and ambient aerosols, enabling better quantification of source- or site-specific fine PM to its climate and health effects.