Fig. 2: Mass closure between gas-phase measurements and particle growth for springtime boreal forest conditions.
From: Incomplete mass closure in atmospheric nanoparticle growth
a The volatility distribution of the OOMs at the average temperature (3.8 °C) of one example NPF event day (11th April 2020). The gray bars show the volatility distribution of the NO3− CIMS only, and the blue bar shows the volatility distribution of the combined ionization schemes. b A size-dependent comparison of the observed GRs (blue diamonds) and the model-predicted GRs (blue solid line with the different colored areas indicating the contribution to GR from different vapor classes). The two dashed blue lines give the ±1 order of magnitude uncertainty in volatility assignment. c The particle size distribution evolution during the event day together with the calculated median growth from the VBS-based growth model (solid thick lines, blue for the combined ionization schemes and gray for the NO3− CIMS only) and a corresponding uncertainty estimate for the model (blue thin solid line are two alternative VBS parametrizations)7,13.
