In this book, the authors present current research in the study of the prediction, formation and environmental impact of precipitation. Topics discussed in this compilation include the precipitation of anions in aqueous systems; inter-decadal trend turnings of climate modes and dynamic/thermodynamic structures associated with a series of winter precipitation events over China; stochastic modelling and simulation of daily precipitation for weather generation; anion intercalation during Mg-Al LDH precipitation and main water-soluble ions in precipitation of the central Mediterranean region.