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A Modeling Study of Nonstationary Trapped Mountain Lee Waves. Part I: Mean-Flow Variability
Publisher: American Meteorological Society
Abstract: The impact of mean-flow variability on finite-amplitude trapped mountain lee waves is investigated by conducting two-dimensional mountain wave simulations for a set of idealized, time-dependent background flows. The lee-wave ...
A Modeling Study of Nonstationary Trapped Mountain Lee Waves. Part II: Nonlinearity
Publisher: American Meteorological Society
Abstract: The generation of nonstationary trapped mountain lee waves through nonlinear wave dynamics without any concomitant change in the background flow is investigated by conducting two-dimensional mountain wave simulations. These ...
Evaluating the Use of a Nonlinear Two-Dimensional Model in Downslope Windstorm Forecasts
Publisher: American Meteorological Society
Abstract: Severe downslope windstorms are a mesoscale, primarily wintertime, phenomenon that affect regions in the lee of large mountain ranges. The resolution of current weather prediction models is too coarse to explicitly predict ...
A Comparison of the Accuracy of Three Anelastic Systems and the Pseudo-Incompressible System
Publisher: American Meteorological Society
Abstract: The accuracy of three anelastic systems (Ogura and Phillips; Wilhelmson and Ogura; Lipps and Hemler) and the pseudo-incompressible system is investigated for small-amplitude and finite-amplitude disturbances. Based on ...
Observations of Precipitation Size and Fall Speed Characteristics within Coexisting Rain and Wet Snow
Publisher: American Meteorological Society
Abstract: Ground-based measurements of particle size and fall speed distributions using a Particle Size and Velocity (PARSIVEL) disdrometer are compared among samples obtained in mixed precipitation (rain and wet snow) and rain in ...
Observations of Nonclassical Frontal Propagation and Frontally Forced Gravity Waves Adjacent to Steep Topography
Publisher: American Meteorological Society
Abstract: Through the integrated analysis of remote sensing and in situ data taken along the Front Range of Colorado, this study describes the interactions that occurred between a leeside arctic front and topographically modulated ...
User-Responsive Diagnostic Forecast Evaluation Approaches: Application to Tropical Cyclone Predictions
Publisher: American Meteorological Society