Molecular-scale evidence of aerosol particle formation via sequential addition of HIO₃.

ABSTRACT: Homogeneous nucleation and subsequent cluster growth leads to the formation of new aerosol particles in the atmosphere. The nucleation of sulfuric acid and organic vapours is thought to be responsible for the formation of new particles over continents, whereas iodine oxide vapours have been implicated in particle formation over coastal regions. The molecular clustering pathways that are involved in atmospheric particle formation have been elucidated in controlled laboratory studies of chemically simple systems, but direct molecular-level observations of nucleation in atmospheric field conditions that involve sulfuric acid, organic or iodine oxide vapours have yet to be reported. Here we present field data from Mace Head, Ireland, and supporting data from northern Greenland and Queen Maud L

SUBMITTER: Sipila M 

PROVIDER: S-EPMC5136290 | biostudies-literature | 2016 Sep

REPOSITORIES: biostudies-literature