WP 3. Aerosol-cloud interactions


This WP gives insight on how newly formed particles will form cloud condensation nuclei (CCN). The freshly formed particles can, depending on the location, increase the concentrations of CCN by a factor of more than two over the course of one day, and ultimately lead to significant enhancements in cloud droplet concentrations. We conclude, therefore, that atmospheric new-particle production is an important process that must be understood and included in global climate models. In this WP, we will answer the following questions:

What fraction of freshly-formed particles is able to grow to cloud condensation nuclei (CCN) size and form cloud droplets?