Abstract: The heterogeneous nucleation of ice from supercooled water is influenced by the nature of the foreign nuclei that serve as the sites for ice embryo formation, and by the stochastic nature of the process of embryo growth ...

Abstract: The concentrations of freezing nuclei in precipitation from different storms have been measured and the variations of nucleus content with space, time, precipitation type and intensity have been examined. It was found that ...

Abstract: tract

Abstract: Freezing experiments using large numbers of small drops are frequently used for the study of both homogeneous and heterogeneous nucleation of water and of other substances. For heterogeneous nucleation, the spread in the ...

Abstract: easured 94-GHz reflectivity in midlevel, stratiform ice clouds was compared with reflectivity calculated from size distributions determined with a particle imaging probe. The radar and the particle probe were carried on ...

Abstract: Data are presented, from a large collection of observations in wintertime clouds in Wyoming, which show that the fraction of cloud volumes from which significant radar polarimetric information can be obtained is small. For ...

Abstract: Based on observations made with an airborne 95-GHz polarimetric cloud radar and in situ microphysical probes, the dependence of ZDR and linear depolarization ratio (LDR) values on ice crystal type and radar beam orientation ...

Abstract: Intense vortical circulations, often organized in counterrotating vortex pairs, were detected in midcontinental cumulus congestus over southeast Wyoming in July 2003. The sampled clouds developed in dry environments and ...

Abstract: Artificial snow crystals were grown in a diffusion chamber Of parallel-plate design which afforded accurate control of the crystal growth conditions. Observations were made at small excesses of vapor density over ice ...

Abstract: Fall patterns of timed snow crystals between 0.02 and 0.5 cm in size were studied using a stereoscopic camera system with stroboscopic illumination. Relationships between terminal fall velocities and crystal dimensions ...