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RISA Technique for Investigating Graupel and Hail Development
Publisher: American Meteorological Society
Abstract: A technique is described for simulating the development of particles in a storm when data on the internal composition and wind-field structures are available. Simulations such as these can be used to investigate particle ...
Ice Particles Observed in a Cirriform Cloud at −83°C and Implications for Polar Stratospheric Clouds
Publisher: American Meteorological Society
Abstract: Mesurements obtained in a thin, cirriform cloud that formed in the temperature range of ?83° to ?84°C and an altitude range at 16.2 to 16.7 km are presented. Implications of the results for particle generation in polar ...
Ice Particle Evolution in the Anvil of a Severe Thunderstorm during CCOPE
Publisher: American Meteorological Society
Abstract: Measurements from the National Center for Atmospheric Research Sabreliner aircraft are combined with a multiple Doppler radar synthesis of the wind field to investigate particle growth processes in the anvil region of a ...
Case Study of a Halistorm in Colorado. Part IV: Graupel and Hail Growth Mechanisms Deduced through Particle Trajectory Calculations
Publisher: American Meteorological Society
Abstract: The processes of development of graupel and had which fell to the ground from a storm in northeastern Colorado on 22 July 1976 are investigated over a one-hour period. The growth and trajectories of 130 000 particles of ...
A Comparative Study of the Rates of Development of Potential Graupel and Hail Embryos in High Plains Storms
Publisher: American Meteorological Society
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 ...
Laboratory and Field Observations of the Growth of Columnar and Plate Crystals from Frozen Droplets
Publisher: American Meteorological Society
Abstract: A laboratory experiment was initiated to grow the banded columnar crystals found in cirrus clouds and to determine if they nucleated through a freezing nucleus. Banded columnar crystals were collected in cirrus clouds and ...
Precipitation Development in Stratiform Ice Clouds: A Microphysical and Dynamical Study
Publisher: American Meteorological Society
Abstract: Aircraft microphysical measurements in ice clouds associated with warm frontal overrunning systems, warm frontal occlusions, closed lows aloft and the jet stream were combined with Doppler radar measurements in four case ...
The Characteristics of Graupel Particles in Northeastern Colorado Cumulus Congestus Clouds
Publisher: American Meteorological Society
Abstract: The physical characteristics of graupel particles were investigated from in in situ collections of ice particles sampled in first-echo summertime cumulus congestus clouds in northeastern Colorado with the NCAR/NOAA sailplane ...
Properties of Tropical and Midlatitude Ice Cloud Particle Ensembles. Part II: Applications for Mesoscale and Climate Models
Publisher: American Meteorological Society
Abstract: This is the second part of a study that characterizes several bulk properties of ice particle populations sampled in synoptically generated midlatitude and convectively generated tropical ice clouds, for the purpose of ...
Properties of Tropical and Midlatitude Ice Cloud Particle Ensembles. Part I: Median Mass Diameters and Terminal Velocities
Publisher: American Meteorological Society
Abstract: This is Part I of a study that characterizes several bulk properties of ice particle populations sampled in midlatitude and tropical cirrus and deep stratiform ice clouds, for the purpose of developing an understanding of ...