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The Impact of Step Orography on Flow in the Eta Model: Two Contrasting Examples
Publisher: American Meteorological Society
Abstract: Simulations were performed using the Eta Model with its eta vertical coordinate and stepwise treatment of terrain, and with a substitution of the terrain-following sigma vertical coordinate to investigate the impact of ...
Application of Object-Based Verification Techniques to Ensemble Precipitation Forecasts
Publisher: American Meteorological Society
Abstract: Both the Method for Object-based Diagnostic Evaluation (MODE) and contiguous rain area (CRA) object-based verification techniques have been used to analyze precipitation forecasts from two sets of ensembles to determine ...
The influence of Microphysics in the Formation of Intense Wake Lows: A Numerical Modeling Study
Publisher: American Meteorological Society
Abstract: A two-dimensional cloud model is used to investigate whether microphysical processes alone within the stratiform rain regions of mesoscale convection systems can induce strong descent and intense surface wake lows accompanying ...
Eta Simulations of Three Extreme Precipitation Events: Sensitivity to Resolution and Convective Parameterization
Publisher: American Meteorological Society
Abstract: A versatile workstation version of the NCEP Eta Model is used to simulate three excessive precipitation episodes in the central United States. These events all resulted in damaging flash flooding and include 16?17 June ...
Impact of Verification Grid-Box Size on Warm-Season QPF Skill Measures
Publisher: American Meteorological Society
Abstract: A 10-km-grid-spacing version of NCEP's Eta Model was used to simulate 11 warm-season convective systems occurring over the U.S. upper midwest. Quantitative precipitation forecasts (QPFs) from the model valid for 6-h periods ...
CORRIGENDUM
Publisher: American Meteorological Society
Abstract: AbstractAn error was discovered in the code used to calculate neighborhood equitable threat scores (nETSs) in Squitieri and Gallus. Replicating results with the error corrected revealed that most of the conclusions from ...
Challenges in Numerical Weather Prediction of the 10 August 2020 Midwestern Derecho: Examples from the FV3-LAM
Publisher: American Meteorological Society
The Impact on Simulated Bow Echoes of Changing Grid Spacing from 3 km to 1 km in the WRF Model
Publisher: American Meteorological Society
Diabatic Effects on Late-Winter Cold Front Evolution: Conceptual and Numerical Model Evaluations
Publisher: American Meteorological Society
Abstract: The impact of diabatic heating on late winter frontogenesis is evaluated both through conceptual scaling and the use of high-resolution Eta Model simulations of a strong but relatively dry cold surface front that occurred ...