The effect of particle size and nitric acid uptake on the homogeneous freezing of aqueous sulfuric acid particles

摘要: Recent laboratory data on ice freezing from aqueous H 2 SO 4 solutions are used to update our homogeneous nucleation algorithm. The effect of particle size the process is demonstrated by calculating and comparing curves for different particles ranging 0.2 micron in radius. Using model we show that liquid water saturation required above -44°C activate submicron into cloud droplets. A thermodynamic available ternary /HNO 3 /H O insufficient adequately address HNO uptake ice.