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Comparison of New Particle Formation (NPF) Events in Various Ambient Atmospheres
HAEBUM LEE, Joonwoo Kim, Jiyeon Park, Young-Jun Yoon, Kihong Park, Gwangju Institute of Science and Technology
Abstract Number: 585
Working Group: Aerosol Physics
Abstract
New particle formation (NPF) in the ambient atmosphere has been observed in various locations in the world. The newly formed nanoparticles can grow to the submicrometer particles increasing the number of particles and having a potential to serve as cloud condensation nuclei (CCN). The occurrence of NPF will be affected by several factors such as precursor gases, preexisting aerosols, and meteorological parameters (RH, temperature, and solar radiation). We observed NPF events at the remote (Ny-Alesund, Norway (Arctic)), urban (Gwangju, Korea), and agricultural (Gimje, Korea) sites and examined new particle formation rate (J), growth rate (GR), and dimensionless NPF occurrence criteria (LΓ). The average NPF occurrence frequency was 23.6%, 45.4%, and 55.9% at the Arctic, urban, and agricultural sites, respectively. The dimensionless NPF occurrence criteria agreed well with the observed NPF events at all sites. The highest formation and growth rates were observed at the agricultural site. The H2SO4 played more important roles in new particle formation and growth at the urban site, compared to the Arctic and agricultural sites. More comparison of NPF characteristics among sites will be presented.