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Experimental Studies of the Crystallization of Supercooled Water
Publisher: American Meteorological Society
Abstract: The crystal fabric of ice formed by the freezing of supercooled water was examined in polarized light. Drops of radius 0.1 cm were frozen by homogeneous nucleation at ?33C, by various foreign particles in suspension, or ...
Field and Laboratory Observations of Ice Crystal Growth from the Vapor
Publisher: American Meteorological Society
Abstract: The temperature dependence of the habit of ice crystals growing in a water vapor diffusion chamber is related to the growth rate of ice crystals in a supercooled cloud. The rates of growth occurring between ?4 and ?6C as ...
Degradation of In-Cloud Forward Scattering Spectrometer Probe Measurements in the Presence of Ice Particles
Publisher: American Meteorological Society
Abstract: Airborne measurements of cloud liquid water content derived from a formvar replicator, a Johnson-Williams probe and a forward scattering spectrometer probe (FSSP) are compared. These show that in the presence of ice crystals ...
Observations of the Distribution of Ice in Hurricanes
Publisher: American Meteorological Society
Abstract: Observations of the type and distribution 0°C isotherm in three Atlantic hurricanes are presented. Supercooled drops, graupel, columns and aggregated snowflakes were observed. The supercooled drops were found only in ...
Ice Crystals Produced by Expansion: Experiments and Application to Aircraft-produced Ice
Publisher: American Meteorological Society
Abstract: The production of ice crystals as a result of the expansion and cooling of moist air was investigated by laboratory experiment. In particular, the warmest expanded air temperature that produces crystals was sought as a ...
Supersaturation and Time Dependence of Ice Nucleation from the Vapor on Single Crystal Substrates
Publisher: American Meteorological Society
Abstract: Nucleation of individual ice crystals on large (3.0 mm) cleaved crystals of solution-grown silver iodide and covellite is investigated by microscopy. The environmental vapor pressure is controlled by saturating two air ...
The Melting Layer: A Laboratory Investigation of Ice Particle Melt and Evaporation near 0°C
Publisher: American Meteorological Society
Abstract: Melting, freezing, and evaporation of individual and aggregates of snow crystals are simulated in the laboratory under controlled temperature, relative humidity, and air velocity. Crystals of selected habit are grown on a ...
Charge Separation Associated with Secondary Ice Crystal Production
Publisher: American Meteorological Society
Abstract: Laboratory studies of rime growth on a moving rod under conditions of secondary ice crystal production show that the rod acquires a positive charge, equivalent to charge associated with each ejected particle of 5 ? 10?4C. ...
Influence of Methyl 2-Cyanoacrylate Monomer on the Habit of Ice Crystals Grown from the Vapor
Publisher: American Meteorological Society
Abstract: Ice crystals grow from the vapor in the presence of Eastman9 10 cement (containing methyl 2-cyanoacrylate monomer) in the form of fine fibres a few microns in diameter, in the c axis direction of the nucleating crystal. A ...
Measurements of Liquid Water Content in Winter Cloud Systems over the Sierra Nevada
Publisher: American Meteorological Society
Abstract: Investigations of the structure and organization of synoptic-scale storms over the Sierra Nevada Mountain Range during two successive winters (1971?73) were made with a modified B-26 aircraft. Measurements of liquid water ...