Abstract
The numerical model calculation was conducted of pH of cloud water on the assumption that the cloud droplets formed on H2SO4 and other sulfate and nitrate nuclei dissolve acidic and alkaline gases to achieve gas-liquid equilibrium in a very short time. With the initial concentration of gases and particulate components as found in the real atmosphere the pH of the cloud water is calculated to be three. The calculation inetrprets pH, and the concentrations of SO42-, NO3- and other species in cloud water observed on a mountain fairly well.
