The Densities and Growth Rates of Ice Crystals between −5C and −9C

Abstract

The mass of columnar ice crystals between ?5C and ?9C has been measured as a function of time. It is shown that the measured growth rates are not markedly different from the empirical formula proposed by Hindman and Johnson. However, during the first 3 min of growth the parametric form of the axial dimensions can be adequately described by a linear function of time rather than a power law. Over the same temperature range the bulk density/temperature curve deduced by Fukuta is valid for time periods at least as long as 3 min and for a wide variety of ice crystal concentrations.