This study quantified ammonia’s role in springtime particle formation over the United States using chemical transport modeling, size-resolved microphysics, and observations. Under the modeled conditions, ammonia’s participation in nucleation accounted for 63 ± 15% of particles larger than 10 nm and 16 ± 10% of cloud condensation nuclei at 0.4% supersaturation.
Citation
Arshad Nair, Fangqun Yu, Gan Luo, “The importance of ammonia for springtime atmospheric new particle formation and aerosol number abundance over the United States.” Science of The Total Environment, 2023.