WP 1. Atmospheric clusters
This WP gives insight on cluster dynamics and the existence of neutral clusters. The existence of atmospheric neutral clusters has been suggested some years ago. Prof. Kulmala\'s group has observed that the formation of new aerosol particles is connected with the existence of atmospheric clusters. The existence of small ion clusters in the atmosphere has been known already for several decades , but the existence of neutral atmospheric clusters has been remained an open question until recently. In this WP, we will answer the following questions:
What are the processes behind the formation and dynamics of atmospheric clusters?
What are the the sources and sinks of neutral clusters and ion clusters? What is the composition of the atmospheric clusters?
How are these clusters activated?