Observations of new particle formation, modal growth rates, and direct emissions of sub-10 nm particles in an urban environment.

ABSTRACT: Ultrafine particles with diameters less than 100 nm suspended in the air are a topic of interest in air quality and climate sciences. Sub-10 nm particles are of additional interest due to their health effects and contribution to particle growth processes. Ambient measurements were carried out at North Carolina State University in Raleigh, NC between April to June 2019 and November 2019 to May 2020 to investigate the temporal variability of size distribution and number concentration of ultrafine particles. A mobile lab was deployed between March and May 2020 to characterize the spatial distribution of sub-10 nm particle number concentration. New particle formation and growth events were observed regularly. Also observed were direct emissions of sub-10 nm particles. Analysis against meteorol

SUBMITTER: Zimmerman A 

PROVIDER: S-EPMC7411388 | biostudies-literature | 2020 Dec

REPOSITORIES: biostudies-literature