The impact of the atmospheric turbulence-development tendency on new particle formation: a common finding on three continents.

ABSTRACT: A new mechanism of new particle formation (NPF) is investigated using comprehensive measurements of aerosol physicochemical quantities and meteorological variables made in three continents, including Beijing, China; the Southern Great Plains site in the USA; and SMEAR II Station in Hyytiälä, Finland. Despite the considerably different emissions of chemical species among the sites, a common relationship was found between the characteristics of NPF and the stability intensity. The stability parameter (ζ = Z/L, where Z is the height above ground and L is the Monin-Obukhov length) is found to play an important role; it drops significantly before NPF as the atmosphere becomes more unstable, which may serve as an indicator of nucleation bursts. As the atmosphere becom

SUBMITTER: Wu H 

PROVIDER: S-EPMC8288356 | biostudies-literature | 2021 Mar

REPOSITORIES: biostudies-literature