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Downdrafts within High Plains Cumulonimbi. Part II: Dynamics and Thermodynamics
Publisher: American Meteorological Society
Abstract: The dynamical and thermodynamical properties of precipitation-associated downdrafts are examined using a Lagrangian trajectory analysis approach applied to parcels passing through the low-level downdraft of precipitating ...
Downdrafts within High Plains Cumulonimbi. Part I: General Kinematic Structure
Publisher: American Meteorological Society
Abstract: This paper presents results from a comprehensive investigation in which observations from several case studies an integrated with three-dimensional cloud model results to examine the general kinematic structure of downdrafts ...
Structure and Evolution of a Long-Lived, Microburst-Producing Storm
Publisher: American Meteorological Society
Abstract: This paper describes an analysis of a long-lived, microburst-producing storm that evolved within a relatively dry environment having a relatively low CAPE value of 450 J kg?1. The storm displayed a variety of kinematic and ...
Numerical Simulation of Low-Level Downdraft Initiation within Precipitating Cumulonimbi: Some Preliminary Results
Publisher: American Meteorological Society
Abstract: Two three-dimensional cloud model simulations are examined and compared in order to define some of the characteristics of the low-level downdraft initiation process within deep precipitating convection. The initial environment ...
Precipitation Growth Trajectories in a CCOPE Storm
Publisher: American Meteorological Society
Abstract: The growth trajectories of precipitation particles that attain diameters from 0.5 to 2.0 cm are modeled within the wind field of a small, relatively steady-state, southeastern Montana thunderstorm. The trajectories are ...
An Intense, Quasi-Steady Thunderstorm over Mountainous Terrain. Part II: Doppler Radar Observations of the Storm Morphological Structure
Publisher: American Meteorological Society
Abstract: An analysis of an intense, quasi-steady thunderstorm which developed over mountainous terrain is presented. This storm, extensively analyzed using multiple Doppler radar and surface mesonet data, formed within an environment ...
An Intense, Quasi-Steady Thunderstorm over Mountainous Terrain. Part III: Doppler Radar Observations of the Turbulent Structure
Publisher: American Meteorological Society
Abstract: The evolution of the turbulent structure of an intense, quasi-steady thunderstorm is examined using Doppler radar estimates of turbulent kinetic energy dissipation rates (?) and radial shears of raw radial velocity (?Vr/?R). ...
Variations in Cloud-to-Ground Lightning Characteristics among Three Adjacent Tornadic Supercell Storms over the Tennessee Valley Region
Publisher: American Meteorological Society
Abstract: The contrasting behavior of cloud-to-ground (CG) lightning associated with three adjacent supercell thunderstorms observed on 18 May 1995 is examined. Thunderstorm characteristics and anvil interactions are related to ...
The Interactions of Gravity Waves with Mesocyclones: Preliminary Observations and Theory
Publisher: American Meteorological Society
Abstract: Apparent interactions between ducted gravity waves and preexisting mesocyclones are investigated. Preliminary analyses of Weather Surveillance Radar-1988 Doppler (WSR-88D) observations from several cases reveal that the ...
The Iowa Cyclonic-Anticyclonic Tornado Pair and Its Parent Thunderstorm
Publisher: American Meteorological Society
Abstract: A severe thunderstorm which spawned at least four tornadoes, one of them anticyclonic, formed over central Iowa during the afternoon of 13 June 1976. This storm moved toward the east-northeast, approximately parallel to ...