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The Impact of Effective Buoyancy and Dynamic Pressure Forcing on Vertical Velocities within Two-Dimensional Updrafts
Publisher: American Meteorological Society
Abstract: his research develops simple diagnostic expressions for vertical acceleration dw/dt and vertical velocity w within updrafts that account for effective buoyancy and the dynamic pressure gradient force. Effective buoyancy ...
Origin of Non-Gaussian Regimes and Predictability in an Atmospheric Model
Publisher: American Meteorological Society
Abstract: his study details properties of non-Gaussian regimes and state-dependent ensemble spreads of trajectories in a reduced phase space of an idealized three-level quasigeostrophic (QG3) dynamical model. Methodologically, ...
Theoretical Expressions for the Ascent Rate of Moist Deep Convective Thermals
Publisher: American Meteorological Society
Abstract: AbstractAn approximate analytic expression is derived for the ratio ? of the ascent rate of moist deep convective thermals and the maximum vertical velocity within them; ? is characterized as a function of two nondimensional ...
Dynamics Governing a Simulated Mesoscale Convective System with a Training Convective Line
Publisher: American Meteorological Society
Abstract: his research investigates the dynamics of a simulated training line/adjoining stratiform (TL/AS) mesoscale convective system (MCS), with composite atmospheric fields used as initial and lateral boundary conditions for the ...
The Simulated Structure and Evolution of a Quasi-Idealized Warm-Season Convective System with a Training Convective Line
Publisher: American Meteorological Society
Abstract: his study details the development and use of an idealized modeling framework to simulate a quasi-stationary heavy-rain-producing mesoscale convective system (MCS). A 36-h composite progression of atmospheric fields computed ...
Synoptic Control of Heavy-Rain-Producing Convective Training Episodes
Publisher: American Meteorological Society
Abstract: his study examines the degree to which the downscale cascade of information from synoptic-scale motions constrains error growth in simulations of a particular type of heavy-rain-producing mesoscale convective system known ...
Near-Surface Thermodynamic Sensitivities in Simulated Extreme-Rain-Producing Mesoscale Convective Systems
Publisher: American Meteorological Society
Abstract: his study investigates the influences of low-level atmospheric water vapor on the precipitation produced by simulated warm-season midlatitude mesoscale convective systems (MCSs). In a series of semi-idealized numerical ...
Mechanisms for Organization and Echo Training in a Flash-Flood-Producing Mesoscale Convective System
Publisher: American Meteorological Society
Abstract: n this research, a numerical simulation of an observed training line/adjoining stratiform (TL/AS)-type mesoscale convective system (MCS) was used to investigate processes leading to upwind propagation of convection and ...
The Influence of Vertical Wind Shear on Moist Thermals
Publisher: American Meteorological Society
Abstract: AbstractAlthough it is well established that vertical wind shear helps to organize and maintain convective systems, there is a longstanding colloquial notion that it inhibits the development of deep convection. To investigate ...
Evaluating the Conservation of Energy Variables in Simulations of Deep Moist Convection
Publisher: American Meteorological Society