Toward the theory of homogeneous nucleation and its parameterization for cloud models

Following the classical approach in homogeneous nucleation theory, a general but simple expression for the homogeneous freezing rate is derived with account for solution and curvature effects, and applied to the examples of ammonium sulfate and sulfuric acid solutions. After showing that this method compares well with other approaches, a parameterization suitable for use in various cloud models is discussed.