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. ...

Abstract: Ice crystals were grown in a supercooled cloud at temperatures ranging from ?3°C to ?21°C for periods from 30?40 s to 150?180 s. When the axial dimensions at a given time were examined as a function of temperature, there ...