WP 2. Formation and growth of atmospheric aerosol particles



This WP gives insight on atmospheric nucleation and subsequent growth. Sulphuric acid, which is known to be one of key components in new particle formation and growth, cannot alone account for the observed particle growth , and organic vapours are typically needed to explain it. In particular, mono- and sesquiterpenes are known to have a high potential to participate in secondary organic aerosol formation . Recently, also polymers of isoprene have been detected in organic aerosols . In this WP, we will answer the following questions:

What are the key processes related to new particle formation in the atmosphere?

What is the role of atmospheric ions on atmospheric new particle formation? Is this related to galactic cosmic rays or other ion sources?

Is the activation of existing clusters a key process like it seems right now?