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RISThe Kain–Fritsch Convective Parameterization: An Update
Publisher: American Meteorological Society
Abstract: Numerous modifications to the Kain?Fritsch convective parameterization have been implemented over the last decade. These modifications are described, and the motivating factors for the changes are discussed. Most changes ...
A Gaussian Mixture Model Approach to Forecast Verification
Publisher: American Meteorological Society
Abstract: Verification methods for high-resolution forecasts have been based either on filtering or on objects created by thresholding the images. The filtering methods do not easily permit the use of deformation while identifying ...
A One-Dimensional Entraining/Detraining Plume Model and Its Application in Convective Parameterization
Publisher: American Meteorological Society
Abstract: A new one-dimensional cloud model, specifically designed for application in mesoscale convective parameterization schemes (CPSs), is introduced. The model is unique in its representation of environmental entrainment and ...
Multiscale Convective Overturning in Mesoscale Convective Systems: Reconciling Observations, Simulations, and Theory
Publisher: American Meteorological Society
Abstract: An analysis of how parameterized convection interacts with hydrostatic, explicitly resolved precipitation processes to represent multiscale convective overturning in a mesoscale-resolution numerical simulation is presented. ...
Sensitivity of Several Performance Measures to Displacement Error, Bias, and Event Frequency
Publisher: American Meteorological Society
Abstract: The sensitivity of various accuracy measures to displacement error, bias, and event frequency is analyzed for a simple hypothetical forecasting situation. Each measure is found to be sensitive to displacement error and ...
Seasonal Variations in Severe Weather Forecast Skill in an Experimental Convection-Allowing Model
Publisher: American Meteorological Society
Abstract: AbstractEight years of daily, experimental, deterministic, convection-allowing model (CAM) forecasts, produced by the National Severe Storms Laboratory, were evaluated to assess their ability at predicting severe weather ...
OSSEs for an Ensemble 3DVAR Data Assimilation System with Radar Observations of Convective Storms
Publisher: American Meteorological Society
Abstract: n ensemble of the three-dimensional variational data assimilation (En3DA) method for convective-scale weather has been developed. It consists of an ensemble of three-dimensional variational data assimilations and forecasts ...
An Alternative Mass Flux Profile in the Kain–Fritsch Convective Parameterization and Its Effects in Seasonal Precipitation
Publisher: American Meteorological Society
Abstract: The authors have altered the vertical profile of updraft mass flux detrainment in an implementation of the Kain?Fritsch2 (KF2) convective parameterization within the fifth-generation Pennsylvania State University?National ...
Parameterized Updraft Mass Flux as a Predictor of Convective Intensity
Publisher: American Meteorological Society
Abstract: Parameterized updraft mass flux, available as a unique predictive field from the Kain?Fritsch (KF) convective parameterization, is presented as a potentially valuable predictor of convective intensity. The KF scheme is ...
Bowing Convective Systems in a Popular Operational Model: Are They for Real?
Publisher: American Meteorological Society
Abstract: Bowing, propagating precipitation features that sometimes appear in NCEP's North American Mesoscale model (NAM; formerly called the Eta Model) forecasts are examined. These features are shown to be associated with an unusual ...