A comparative study of the rates of development of potential graupel and hail embryos in High Plains storms.

Abstract

The rates of development of graupel and hail in High Plains storms are calculated based on mechanisms for the growth of particles of various types. In the first part of this study, planar crystals, aggregates, graupel particles and frozen drops grow in a region of updraft specified by a one-dimensional parcel model. The processes of hail production are deduced by calculating the times required for each of the above embryo types to develop into hail from the time of nucleation over the range of typically observed liquid water contents. -from Author