New ACP Letter: The driving factors of new particle formation and growth in the polluted boundary layer
27 September 2021
Experiments at CLOUD show that in polluted environments new particle formation (NPF) is largely driven by the formation of sulfuric acid–base clusters, stabilized by amines, high ammonia concentrations or lower temperatures. While oxidation products of aromatics can nucleate, they play a minor role in urban NPF. The authors' experiments span 4 orders of magnitude variation of observed NPF rates in ambient conditions. The authors provide a framework based on NPF and growth rates to interpret ambient observations.
Contact: Urs Baltensperger (firstname.lastname@example.org) and Imad El Haddad (email@example.com)