Figure 2
From: Role of gas–molecular cluster–aerosol dynamics in atmospheric new-particle formation
Particle formation rate (J), size-classified particle concentrations (C), concentrations of clustering vapors ([H2SO4] and [NH3] or [DMA]) and H2SO4 condensation sink (CS) along trajectory 7 (UTC time) for the standard and explicit simulation cases with initial particle formation from H2SO4–NH3 (a), and H2SO4–DMA (b). For J and C, also the ratio between the standard and explicit cases is shown, with the horizontal black dash-dotted line depicting a ratio of one. Periods during which J ≥ 10−3 cm−3 s−1 for at least one of Jstandard and Jexplicit are marked with red in the time series of J. Note that both NH3 and DMA are present in all simulations, and the difference between the H2SO4–NH3 and H2SO4–DMA cases is only the chemical mechanism assumed for the initial particle formation.
