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RISA Potential Vorticity-Based Study of the Role of Diabatic Heating and Friction in a Numerically Simulated Baroclinic Cyclone
Publisher: American Meteorological Society
Abstract: A particularly intense case of western Atlantic baroclinic cyclogenesis was investigated in this study. Specifically, the roles of latent heat of condensation and surface friction were examined from the potential vorticity ...
Nonhydrostatic, Mesobeta-Scale Model Simulations of Cloud Ceiling and Visibility for an East Coast Winter Precipitation Event
Publisher: American Meteorological Society
Abstract: Experiments are described that provide an example of the baseline skill level for the numerical prediction of cloud ceiling and visibility, where application to aviation-system safety and efficiency is emphasized. Model ...
The Transition to Topographic Normal Modes
Publisher: American Meteorological Society
Abstract: The present note proposes an explanation of topographic normal modes that grow in a flow with a zonally symmetric mountain. An issue of practical importance is whether one expects the maximum amplitude to occur poleward ...
Interpretation of the Effect of Mountains on Synoptic-Scale Baroclinic Waves
Publisher: American Meteorological Society
Abstract: Linear and nonlinear simulations of idealized baroclinic waves interacting with topography are examined in the context of quasigeostrophy. The purpose is to provide a simple conceptual interpretation of the transients ...
A Coupled Air–Sea Mesoscale Model: Experiments in Atmospheric Sensitivity to Marine Roughness
Publisher: American Meteorological Society
Abstract: A coupled air?sea numerical model comprising a mesoscale atmospheric model, a marine circulation model, and a surface wave model is presented. The coupled model is tested through simulations of an event of frontal passage ...
A New Look at Snowpack Trends in the Cascade Mountains
Publisher: American Meteorological Society
Abstract: This study examines the changes in Cascade Mountain spring snowpack since 1930. Three new time series facilitate this analysis: a water-balance estimate of Cascade snowpack from 1930 to 2007 that extends the observational ...
The Occurrence of “Irregular” Ice Particles in Stratiform Clouds
Publisher: American Meteorological Society
Abstract: Recent studies that have classified ice particles from airborne imaging probe data have concluded that the vast majority of ice particles in stratiform precipitation systems are of an ?irregular shape.? This conclusion ...
PREFACE
Publisher: American Meteorological Society
Structure and Evolution of Winter Cyclones in the Central United States and Their Effects on the Distribution of Precipitation. Part V: Thermodynamic and Dual-Doppler Radar Analysis of a Squall Line Associated with a Cold Front Aloft
Publisher: American Meteorological Society
Abstract: On 8?9 March 1992, a long-lived squall line traversed the state of Kansas, producing hail and damaging winds. It was shown previously that this squall line was part of a synoptic-scale rainband 2000 km in length that was ...
Structure and Evolution of Winter Cyclones in the Central United States and Their Effects on the Distribution of Precipitation. Part VI: A Mesoscale Modeling Study of the Initiation of Convective Rainbands
Publisher: American Meteorological Society
Abstract: A cyclonic storm that moved over the central United States on 8?9 March 1992 developed two convective rainbands, namely, a pre?dry trough rainband and a cold front aloft (CFA) rainband. This study extends the results of ...