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RISQuality Assurance in Atmospheric Modeling
Publisher: American Meteorological Society
Abstract: r summarizes a number of best practices associated with the use of numerical models of the atmosphere and is motivated by the rapid growth in the number of model users, who have a range of scientific and technical preparations. ...
Characteristics of Summertime Circulations and Pollutant Ventilation in the Los Angeles Basin
Publisher: American Meteorological Society
Abstract: A cross-sectional numerical primitive-equation model is used to simulate the summertime airflow pattern in the Los Angeles basin for calm synoptic-scale wind conditions. The contributions of the sea breeze, the urban heat ...
Use of Four-Dimensional Data Assimilation by Newtonian Relaxation and Latent-Heat Forcing to Improve a Mesoscale-Model Precipitation Forecast: A Case Study
Publisher: American Meteorological Society
Abstract: The Penn State/NCAR mesoscale model has been used in a study of special static- and dynamic-initialization techniques that improve a very-short-range forecast of the heavy convective rainfall that occurred in Texas, Oklahoma ...
Incorporating Surface-Winds and Rainfall Rates into the Initialization of a Mesoscale Hurricane Model
Publisher: American Meteorological Society
Abstract: The initialization of a three-dimensional model with operational data for Hurricane Eloise (1975) was studied to assess the impact of using bogus storm data, surface winds, rainfall rates, and a high-resolution surface ...
The Nonlinear Evolution of Idealized, Unforced, Conditional Symmetric Instability: A Numerical Study
Publisher: American Meteorological Society
Abstract: A two-dimensional version of the Penn State?NCAR mesoscale model (MM4) has been used to simulate the life cycle of conditional symmetric instability (CSI) under conditions of no deformational or planetary boundary layer ...
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 ...
Sensitivity of Orographic Moist Convection to Landscape Variability: A Study of the Buffalo Creek, Colorado, Flash Flood Case of 1996
Publisher: American Meteorological Society
Abstract: A number of numerical experiments with a high-resolution mesoscale model were conducted to study the convective rainfall event that caused the 1996 Buffalo Creek, Colorado, flash flood. Different surface conditions and ...
Multiscale Local Forcing of the Arabian Desert Daytime Boundary Layer, and Implications for the Dispersion of Surface-Released Contaminants
Publisher: American Meteorological Society
Abstract: Four 6-day simulations of the atmospheric conditions over the Arabian Desert during the time of the 1991 detonation and release of toxic material at the Khamisiyah, Iraq, weapons depot were performed using a mesoscale model ...
Mesoscale Coastal Processes during GALE IOP 2
Publisher: American Meteorological Society
Abstract: During Intensive Observation Period 2 of the Genesis of Atlantic Lows Experiment, a number of mesoscale phenomena were observed with special and conventional observing systems over the land and coastal waters. This study ...
Nonlinear Hydrostatic Conditional Symmetric Instability: Implications for Numerical Weather Prediction
Publisher: American Meteorological Society
Abstract: A simplified two-dimensional version of the Pennsylvania State University-NCAR Mm scale Model (MM4) was used to investigate the nonlinear evolution of unforced conditional symmetric instability (CSI). Sensitivity tests ...