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Buoyancy and Shear Characteristics of Hurricane-Tornado Environments
Publisher: American Meteorological Society
Abstract: Detailed composite profiles of temperature, moisture, and wind are constructed for tornado environments in tropical cyclones that affected the United States during the period 1948?86. Winds are composited in components ...
Observations of the Hurricane “Danny” Tornado Outbreak of 16 August 1985
Publisher: American Meteorological Society
Abstract: On 16 August 1985 the remnants of Hurricane ?Danny? spawned a large tornado outbreak in Mississippi, Alabama and Tennessee. At least six of 22 tornado- or funnel-producing storms observed on that day displayed long-track ...
Simulations of Shallow Supercell Storms in Landfalling Hurricane Environments
Publisher: American Meteorological Society
Abstract: Numerical simulations of the convective storms that form in tornado-producing landfalling hurricanes show that shallow supercells are possible, even though buoyancy is limited because ambient lapse rates are close to moist ...
The Sensitivity of Simulated Supercell Structure and Intensity to Variations in the Shapes of Environmental Buoyancy and Shear Profiles
Publisher: American Meteorological Society
Abstract: Convective storm simulations are conducted using varying thermal and wind profile shapes, subject to the constraints of strict conservation of convective available potential energy (CAPE) and hodograph trace. Small and ...
The Impact on Simulated Storm Structure and Intensity of Variations in the Mixed Layer and Moist Layer Depths
Publisher: American Meteorological Society
Abstract: The sensitivities of convective storm structure and intensity to variations in the depths of the prestorm mixed layer, represented here by the environmental lifted condensation level (LCL), and moist layer, represented by ...
The Sensitivity of Simulated Convective Storms to Variations in Prescribed Single-Moment Microphysics Parameters that Describe Particle Distributions, Sizes, and Numbers
Publisher: American Meteorological Society
Abstract: The sensitivity of cloud-scale simulations of deep convection to variations in prescribed microphysics parameters is studied, using the single-moment scheme in the Regional Atmospheric Modeling System (RAMS) model. Realistic ...
A Low-Precipitation Cumulonimbus along the Dryline in Colorado
Publisher: American Meteorological Society
Abstract: An unusual low-precipitation cumulonimbus that developed in northeastern Colorado is photographically documented in some detail. The storm produced at least 12 funnels, mostly at midlevels on the north side of the main ...
Further Results on the Sensitivity of Simulated Storm Precipitation Efficiency to Environmental Temperature
Publisher: American Meteorological Society
Abstract: A method is devised for diagnosing the condensation rate in simulations using the Regional Atmospheric Modeling System (RAMS) model, where ice-liquid water potential temperature is a prognostic variable and an iterative ...
Airborne Doppler Lidar Observations of Convective Phenomena in Oklahoma
Publisher: American Meteorological Society
Abstract: On 30 June 1981, the wind fields around a variety of convective clouds, ranging from large thunderstorm complexes to isolated cumulus congestus, were observed in Oklahoma using an airborne Doppler lidar operated by the ...
The Sensitivity of Simulated Storm Structure, Intensity, and Precipitation Efficiency to Environmental Temperature
Publisher: American Meteorological Society
Abstract: Prior parameter space studies of simulated deep convection are extended to embrace shifts in the environmental temperature. Within the context of the parameter space study design, shifts in this environmental temperature ...